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3638 lines
99 KiB
3638 lines
99 KiB
//
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// Copyright (c) 2009-2012 Krueger Systems, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#if WINDOWS_PHONE && !USE_WP8_NATIVE_SQLITE
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#define USE_CSHARP_SQLITE
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#endif
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using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Threading;
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#if USE_CSHARP_SQLITE
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using Sqlite3 = Community.CsharpSqlite.Sqlite3;
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using Sqlite3DatabaseHandle = Community.CsharpSqlite.Sqlite3.sqlite3;
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using Sqlite3Statement = Community.CsharpSqlite.Sqlite3.Vdbe;
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#elif USE_WP8_NATIVE_SQLITE
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using Sqlite3 = Sqlite.Sqlite3;
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using Sqlite3DatabaseHandle = Sqlite.Database;
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using Sqlite3Statement = Sqlite.Statement;
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#else
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using Sqlite3DatabaseHandle = System.IntPtr;
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using Sqlite3Statement = System.IntPtr;
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#endif
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namespace SQLite4Unity3d
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{
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public class SQLiteException : Exception
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{
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public SQLite3.Result Result { get; private set; }
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protected SQLiteException(SQLite3.Result r, string message) : base(message)
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{
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Result = r;
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}
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public static SQLiteException New(SQLite3.Result r, string message)
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{
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return new SQLiteException(r, message);
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}
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}
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public class NotNullConstraintViolationException : SQLiteException
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{
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public IEnumerable<TableMapping.Column> Columns { get; protected set; }
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protected NotNullConstraintViolationException(SQLite3.Result r, string message)
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: this(r, message, null, null)
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{
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}
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protected NotNullConstraintViolationException(SQLite3.Result r, string message, TableMapping mapping, object obj)
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: base(r, message)
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{
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if (mapping != null && obj != null)
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{
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this.Columns = from c in mapping.Columns
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where c.IsNullable == false && c.GetValue(obj) == null
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select c;
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}
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}
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public static new NotNullConstraintViolationException New(SQLite3.Result r, string message)
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{
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return new NotNullConstraintViolationException(r, message);
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}
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public static NotNullConstraintViolationException New(SQLite3.Result r, string message, TableMapping mapping, object obj)
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{
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return new NotNullConstraintViolationException(r, message, mapping, obj);
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}
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public static NotNullConstraintViolationException New(SQLiteException exception, TableMapping mapping, object obj)
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{
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return new NotNullConstraintViolationException(exception.Result, exception.Message, mapping, obj);
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}
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}
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[Flags]
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public enum SQLiteOpenFlags
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{
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ReadOnly = 1, ReadWrite = 2, Create = 4,
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NoMutex = 0x8000, FullMutex = 0x10000,
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SharedCache = 0x20000, PrivateCache = 0x40000,
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ProtectionComplete = 0x00100000,
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ProtectionCompleteUnlessOpen = 0x00200000,
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ProtectionCompleteUntilFirstUserAuthentication = 0x00300000,
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ProtectionNone = 0x00400000
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}
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[Flags]
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public enum CreateFlags
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{
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None = 0,
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ImplicitPK = 1, // create a primary key for field called 'Id' (Orm.ImplicitPkName)
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ImplicitIndex = 2, // create an index for fields ending in 'Id' (Orm.ImplicitIndexSuffix)
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AllImplicit = 3, // do both above
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AutoIncPK = 4 // force PK field to be auto inc
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}
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/// <summary>
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/// Represents an open connection to a SQLite database.
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/// </summary>
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public partial class SQLiteConnection : IDisposable
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{
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private bool _open;
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private TimeSpan _busyTimeout;
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private Dictionary<string, TableMapping> _mappings = null;
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private Dictionary<string, TableMapping> _tables = null;
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private System.Diagnostics.Stopwatch _sw;
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private long _elapsedMilliseconds = 0;
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private int _transactionDepth = 0;
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private Random _rand = new Random();
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public Sqlite3DatabaseHandle Handle { get; private set; }
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internal static readonly Sqlite3DatabaseHandle NullHandle = default(Sqlite3DatabaseHandle);
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public string DatabasePath { get; private set; }
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public bool TimeExecution { get; set; }
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public bool Trace { get; set; }
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public bool StoreDateTimeAsTicks { get; private set; }
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/// <summary>
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/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
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/// </summary>
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/// <param name="databasePath">
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/// Specifies the path to the database file.
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/// </param>
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/// <param name="storeDateTimeAsTicks">
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/// Specifies whether to store DateTime properties as ticks (true) or strings (false). You
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/// absolutely do want to store them as Ticks in all new projects. The default of false is
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/// only here for backwards compatibility. There is a *significant* speed advantage, with no
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/// down sides, when setting storeDateTimeAsTicks = true.
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/// </param>
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public SQLiteConnection(string databasePath, bool storeDateTimeAsTicks = false)
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: this(databasePath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create, storeDateTimeAsTicks)
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{
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}
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/// <summary>
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/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
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/// </summary>
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/// <param name="databasePath">
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/// Specifies the path to the database file.
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/// </param>
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/// <param name="storeDateTimeAsTicks">
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/// Specifies whether to store DateTime properties as ticks (true) or strings (false). You
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/// absolutely do want to store them as Ticks in all new projects. The default of false is
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/// only here for backwards compatibility. There is a *significant* speed advantage, with no
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/// down sides, when setting storeDateTimeAsTicks = true.
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/// </param>
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public SQLiteConnection(string databasePath, SQLiteOpenFlags openFlags, bool storeDateTimeAsTicks = false)
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{
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if (string.IsNullOrEmpty(databasePath))
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throw new ArgumentException("Must be specified", "databasePath");
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DatabasePath = databasePath;
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#if NETFX_CORE
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SQLite3.SetDirectory(/*temp directory type*/2, Windows.Storage.ApplicationData.Current.TemporaryFolder.Path);
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#endif
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Sqlite3DatabaseHandle handle;
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#if SILVERLIGHT || USE_CSHARP_SQLITE
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var r = SQLite3.Open (databasePath, out handle, (int)openFlags, IntPtr.Zero);
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#else
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// open using the byte[]
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// in the case where the path may include Unicode
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// force open to using UTF-8 using sqlite3_open_v2
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var databasePathAsBytes = GetNullTerminatedUtf8(DatabasePath);
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var r = SQLite3.Open(databasePathAsBytes, out handle, (int)openFlags, IntPtr.Zero);
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#endif
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Handle = handle;
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if (r != SQLite3.Result.OK)
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{
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throw SQLiteException.New(r, String.Format("Could not open database file: {0} ({1})", DatabasePath, r));
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}
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_open = true;
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StoreDateTimeAsTicks = storeDateTimeAsTicks;
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BusyTimeout = TimeSpan.FromSeconds(0.1);
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}
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static SQLiteConnection()
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{
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if (_preserveDuringLinkMagic)
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{
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var ti = new ColumnInfo();
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ti.Name = "magic";
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}
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}
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public void EnableLoadExtension(int onoff)
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{
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SQLite3.Result r = SQLite3.EnableLoadExtension(Handle, onoff);
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if (r != SQLite3.Result.OK)
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{
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string msg = SQLite3.GetErrmsg(Handle);
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throw SQLiteException.New(r, msg);
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}
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}
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static byte[] GetNullTerminatedUtf8(string s)
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{
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var utf8Length = System.Text.Encoding.UTF8.GetByteCount(s);
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var bytes = new byte[utf8Length + 1];
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utf8Length = System.Text.Encoding.UTF8.GetBytes(s, 0, s.Length, bytes, 0);
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return bytes;
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}
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/// <summary>
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/// Used to list some code that we want the MonoTouch linker
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/// to see, but that we never want to actually execute.
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/// </summary>
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#pragma warning disable 0649
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static bool _preserveDuringLinkMagic;
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#pragma warning restore 0649
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/// <summary>
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/// Sets a busy handler to sleep the specified amount of time when a table is locked.
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/// The handler will sleep multiple times until a total time of <see cref="BusyTimeout"/> has accumulated.
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/// </summary>
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public TimeSpan BusyTimeout
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{
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get { return _busyTimeout; }
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set
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{
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_busyTimeout = value;
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if (Handle != NullHandle)
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{
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SQLite3.BusyTimeout(Handle, (int)_busyTimeout.TotalMilliseconds);
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}
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}
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}
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/// <summary>
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/// Returns the mappings from types to tables that the connection
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/// currently understands.
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/// </summary>
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public IEnumerable<TableMapping> TableMappings
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{
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get
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{
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return _tables != null ? _tables.Values : Enumerable.Empty<TableMapping>();
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}
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}
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/// <summary>
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/// Retrieves the mapping that is automatically generated for the given type.
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/// </summary>
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/// <param name="type">
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/// The type whose mapping to the database is returned.
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/// </param>
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/// <param name="createFlags">
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/// Optional flags allowing implicit PK and indexes based on naming conventions
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/// </param>
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/// <returns>
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/// The mapping represents the schema of the columns of the database and contains
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/// methods to set and get properties of objects.
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/// </returns>
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public TableMapping GetMapping(Type type, CreateFlags createFlags = CreateFlags.None)
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{
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if (_mappings == null)
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{
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_mappings = new Dictionary<string, TableMapping>();
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}
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TableMapping map;
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if (!_mappings.TryGetValue(type.FullName, out map))
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{
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map = new TableMapping(type, createFlags);
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_mappings[type.FullName] = map;
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}
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return map;
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}
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/// <summary>
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/// Retrieves the mapping that is automatically generated for the given type.
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/// </summary>
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/// <returns>
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/// The mapping represents the schema of the columns of the database and contains
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/// methods to set and get properties of objects.
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/// </returns>
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public TableMapping GetMapping<T>()
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{
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return GetMapping(typeof(T));
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}
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private struct IndexedColumn
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{
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public int Order;
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public string ColumnName;
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}
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private struct IndexInfo
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{
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public string IndexName;
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public string TableName;
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public bool Unique;
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public List<IndexedColumn> Columns;
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}
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/// <summary>
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/// Executes a "drop table" on the database. This is non-recoverable.
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/// </summary>
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public int DropTable<T>()
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{
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var map = GetMapping(typeof(T));
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var query = string.Format("drop table if exists \"{0}\"", map.TableName);
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return Execute(query);
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}
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/// <summary>
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/// Executes a "create table if not exists" on the database. It also
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/// creates any specified indexes on the columns of the table. It uses
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/// a schema automatically generated from the specified type. You can
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/// later access this schema by calling GetMapping.
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/// </summary>
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/// <returns>
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/// The number of entries added to the database schema.
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/// </returns>
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public int CreateTable<T>(CreateFlags createFlags = CreateFlags.None)
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{
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return CreateTable(typeof(T), createFlags);
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}
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/// <summary>
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/// Executes a "create table if not exists" on the database. It also
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/// creates any specified indexes on the columns of the table. It uses
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/// a schema automatically generated from the specified type. You can
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/// later access this schema by calling GetMapping.
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/// </summary>
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/// <param name="ty">Type to reflect to a database table.</param>
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/// <param name="createFlags">Optional flags allowing implicit PK and indexes based on naming conventions.</param>
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/// <returns>
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/// The number of entries added to the database schema.
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/// </returns>
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public int CreateTable(Type ty, CreateFlags createFlags = CreateFlags.None)
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{
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if (_tables == null)
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{
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_tables = new Dictionary<string, TableMapping>();
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}
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TableMapping map;
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if (!_tables.TryGetValue(ty.FullName, out map))
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{
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map = GetMapping(ty, createFlags);
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_tables.Add(ty.FullName, map);
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}
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var query = "create table if not exists \"" + map.TableName + "\"(\n";
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var decls = map.Columns.Select(p => Orm.SqlDecl(p, StoreDateTimeAsTicks));
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var decl = string.Join(",\n", decls.ToArray());
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query += decl;
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query += ")";
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var count = Execute(query);
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if (count == 0)
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{ //Possible bug: This always seems to return 0?
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// Table already exists, migrate it
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MigrateTable(map);
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}
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var indexes = new Dictionary<string, IndexInfo>();
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foreach (var c in map.Columns)
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{
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foreach (var i in c.Indices)
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{
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var iname = i.Name ?? map.TableName + "_" + c.Name;
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IndexInfo iinfo;
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if (!indexes.TryGetValue(iname, out iinfo))
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{
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iinfo = new IndexInfo
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{
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IndexName = iname,
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TableName = map.TableName,
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Unique = i.Unique,
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Columns = new List<IndexedColumn>()
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};
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indexes.Add(iname, iinfo);
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}
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if (i.Unique != iinfo.Unique)
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throw new Exception("All the columns in an index must have the same value for their Unique property");
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iinfo.Columns.Add(new IndexedColumn
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{
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Order = i.Order,
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ColumnName = c.Name
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});
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}
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}
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foreach (var indexName in indexes.Keys)
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{
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var index = indexes[indexName];
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var columns = index.Columns.OrderBy(i => i.Order).Select(i => i.ColumnName).ToArray();
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count += CreateIndex(indexName, index.TableName, columns, index.Unique);
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}
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return count;
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}
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/// <summary>
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/// Creates an index for the specified table and columns.
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|
/// </summary>
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|
/// <param name="indexName">Name of the index to create</param>
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/// <param name="tableName">Name of the database table</param>
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/// <param name="columnNames">An array of column names to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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public int CreateIndex(string indexName, string tableName, string[] columnNames, bool unique = false)
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{
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const string sqlFormat = "create {2} index if not exists \"{3}\" on \"{0}\"(\"{1}\")";
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var sql = String.Format(sqlFormat, tableName, string.Join("\", \"", columnNames), unique ? "unique" : "", indexName);
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return Execute(sql);
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}
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|
/// <summary>
|
|
/// Creates an index for the specified table and column.
|
|
/// </summary>
|
|
/// <param name="indexName">Name of the index to create</param>
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/// <param name="tableName">Name of the database table</param>
|
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/// <param name="columnName">Name of the column to index</param>
|
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/// <param name="unique">Whether the index should be unique</param>
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public int CreateIndex(string indexName, string tableName, string columnName, bool unique = false)
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{
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return CreateIndex(indexName, tableName, new string[] { columnName }, unique);
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}
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|
|
|
/// <summary>
|
|
/// Creates an index for the specified table and column.
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|
/// </summary>
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|
/// <param name="tableName">Name of the database table</param>
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/// <param name="columnName">Name of the column to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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|
public int CreateIndex(string tableName, string columnName, bool unique = false)
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{
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return CreateIndex(tableName + "_" + columnName, tableName, columnName, unique);
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|
}
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|
|
|
/// <summary>
|
|
/// Creates an index for the specified table and columns.
|
|
/// </summary>
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|
/// <param name="tableName">Name of the database table</param>
|
|
/// <param name="columnNames">An array of column names to index</param>
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|
/// <param name="unique">Whether the index should be unique</param>
|
|
public int CreateIndex(string tableName, string[] columnNames, bool unique = false)
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|
{
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return CreateIndex(tableName + "_" + string.Join("_", columnNames), tableName, columnNames, unique);
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}
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|
/// <summary>
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|
/// Creates an index for the specified object property.
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|
/// e.g. CreateIndex<Client>(c => c.Name);
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/// </summary>
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|
/// <typeparam name="T">Type to reflect to a database table.</typeparam>
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/// <param name="property">Property to index</param>
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/// <param name="unique">Whether the index should be unique</param>
|
|
public void CreateIndex<T>(Expression<Func<T, object>> property, bool unique = false)
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|
{
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|
MemberExpression mx;
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|
if (property.Body.NodeType == ExpressionType.Convert)
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|
{
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|
mx = ((UnaryExpression)property.Body).Operand as MemberExpression;
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|
}
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|
else
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|
{
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|
mx = (property.Body as MemberExpression);
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}
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|
var propertyInfo = mx.Member as PropertyInfo;
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|
if (propertyInfo == null)
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{
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throw new ArgumentException("The lambda expression 'property' should point to a valid Property");
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}
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|
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var propName = propertyInfo.Name;
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var map = GetMapping<T>();
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var colName = map.FindColumnWithPropertyName(propName).Name;
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CreateIndex(map.TableName, colName, unique);
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|
}
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|
|
|
public class ColumnInfo
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|
{
|
|
// public int cid { get; set; }
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|
|
|
[Column("name")]
|
|
public string Name { get; set; }
|
|
|
|
// [Column ("type")]
|
|
// public string ColumnType { get; set; }
|
|
|
|
public int notnull { get; set; }
|
|
|
|
// public string dflt_value { get; set; }
|
|
|
|
// public int pk { get; set; }
|
|
|
|
public override string ToString()
|
|
{
|
|
return Name;
|
|
}
|
|
}
|
|
|
|
public List<ColumnInfo> GetTableInfo(string tableName)
|
|
{
|
|
var query = "pragma table_info(\"" + tableName + "\")";
|
|
return Query<ColumnInfo>(query);
|
|
}
|
|
|
|
void MigrateTable(TableMapping map)
|
|
{
|
|
var existingCols = GetTableInfo(map.TableName);
|
|
|
|
var toBeAdded = new List<TableMapping.Column>();
|
|
|
|
foreach (var p in map.Columns)
|
|
{
|
|
var found = false;
|
|
foreach (var c in existingCols)
|
|
{
|
|
found = (string.Compare(p.Name, c.Name, StringComparison.OrdinalIgnoreCase) == 0);
|
|
if (found)
|
|
break;
|
|
}
|
|
if (!found)
|
|
{
|
|
toBeAdded.Add(p);
|
|
}
|
|
}
|
|
|
|
foreach (var p in toBeAdded)
|
|
{
|
|
var addCol = "alter table \"" + map.TableName + "\" add column " + Orm.SqlDecl(p, StoreDateTimeAsTicks);
|
|
Execute(addCol);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a new SQLiteCommand. Can be overridden to provide a sub-class.
|
|
/// </summary>
|
|
/// <seealso cref="SQLiteCommand.OnInstanceCreated"/>
|
|
protected virtual SQLiteCommand NewCommand()
|
|
{
|
|
return new SQLiteCommand(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a new SQLiteCommand given the command text with arguments. Place a '?'
|
|
/// in the command text for each of the arguments.
|
|
/// </summary>
|
|
/// <param name="cmdText">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the command text.
|
|
/// </param>
|
|
/// <returns>
|
|
/// A <see cref="SQLiteCommand"/>
|
|
/// </returns>
|
|
public SQLiteCommand CreateCommand(string cmdText, params object[] ps)
|
|
{
|
|
if (!_open)
|
|
throw SQLiteException.New(SQLite3.Result.Error, "Cannot create commands from unopened database");
|
|
|
|
var cmd = NewCommand();
|
|
cmd.CommandText = cmdText;
|
|
foreach (var o in ps)
|
|
{
|
|
cmd.Bind(o);
|
|
}
|
|
return cmd;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// Use this method instead of Query when you don't expect rows back. Such cases include
|
|
/// INSERTs, UPDATEs, and DELETEs.
|
|
/// You can set the Trace or TimeExecution properties of the connection
|
|
/// to profile execution.
|
|
/// </summary>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified in the database as a result of this execution.
|
|
/// </returns>
|
|
public int Execute(string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
|
|
if (TimeExecution)
|
|
{
|
|
if (_sw == null)
|
|
{
|
|
_sw = new Stopwatch();
|
|
}
|
|
_sw.Reset();
|
|
_sw.Start();
|
|
}
|
|
|
|
var r = cmd.ExecuteNonQuery();
|
|
|
|
if (TimeExecution)
|
|
{
|
|
_sw.Stop();
|
|
_elapsedMilliseconds += _sw.ElapsedMilliseconds;
|
|
Debug.WriteLine(string.Format("Finished in {0} ms ({1:0.0} s total)", _sw.ElapsedMilliseconds, _elapsedMilliseconds / 1000.0));
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
public T ExecuteScalar<T>(string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
|
|
if (TimeExecution)
|
|
{
|
|
if (_sw == null)
|
|
{
|
|
_sw = new Stopwatch();
|
|
}
|
|
_sw.Reset();
|
|
_sw.Start();
|
|
}
|
|
|
|
var r = cmd.ExecuteScalar<T>();
|
|
|
|
if (TimeExecution)
|
|
{
|
|
_sw.Stop();
|
|
_elapsedMilliseconds += _sw.ElapsedMilliseconds;
|
|
Debug.WriteLine(string.Format("Finished in {0} ms ({1:0.0} s total)", _sw.ElapsedMilliseconds, _elapsedMilliseconds / 1000.0));
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the mapping automatically generated for
|
|
/// the given type.
|
|
/// </summary>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// </returns>
|
|
public List<T> Query<T>(string query, params object[] args) where T : new()
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
return cmd.ExecuteQuery<T>();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the mapping automatically generated for
|
|
/// the given type.
|
|
/// </summary>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// The enumerator will call sqlite3_step on each call to MoveNext, so the database
|
|
/// connection must remain open for the lifetime of the enumerator.
|
|
/// </returns>
|
|
public IEnumerable<T> DeferredQuery<T>(string query, params object[] args) where T : new()
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
return cmd.ExecuteDeferredQuery<T>();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the specified mapping. This function is
|
|
/// only used by libraries in order to query the database via introspection. It is
|
|
/// normally not used.
|
|
/// </summary>
|
|
/// <param name="map">
|
|
/// A <see cref="TableMapping"/> to use to convert the resulting rows
|
|
/// into objects.
|
|
/// </param>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// </returns>
|
|
public List<object> Query(TableMapping map, string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
return cmd.ExecuteQuery<object>(map);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the specified mapping. This function is
|
|
/// only used by libraries in order to query the database via introspection. It is
|
|
/// normally not used.
|
|
/// </summary>
|
|
/// <param name="map">
|
|
/// A <see cref="TableMapping"/> to use to convert the resulting rows
|
|
/// into objects.
|
|
/// </param>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// The enumerator will call sqlite3_step on each call to MoveNext, so the database
|
|
/// connection must remain open for the lifetime of the enumerator.
|
|
/// </returns>
|
|
public IEnumerable<object> DeferredQuery(TableMapping map, string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
return cmd.ExecuteDeferredQuery<object>(map);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns a queryable interface to the table represented by the given type.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// A queryable object that is able to translate Where, OrderBy, and Take
|
|
/// queries into native SQL.
|
|
/// </returns>
|
|
public TableQuery<T> Table<T>() where T : new()
|
|
{
|
|
return new TableQuery<T>(this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve an object with the given primary key from the table
|
|
/// associated with the specified type. Use of this method requires that
|
|
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
|
|
/// </summary>
|
|
/// <param name="pk">
|
|
/// The primary key.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object with the given primary key. Throws a not found exception
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Get<T>(object pk) where T : new()
|
|
{
|
|
var map = GetMapping(typeof(T));
|
|
return Query<T>(map.GetByPrimaryKeySql, pk).First();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve the first object that matches the predicate from the table
|
|
/// associated with the specified type.
|
|
/// </summary>
|
|
/// <param name="predicate">
|
|
/// A predicate for which object to find.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object that matches the given predicate. Throws a not found exception
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Get<T>(Expression<Func<T, bool>> predicate) where T : new()
|
|
{
|
|
return Table<T>().Where(predicate).First();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve an object with the given primary key from the table
|
|
/// associated with the specified type. Use of this method requires that
|
|
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
|
|
/// </summary>
|
|
/// <param name="pk">
|
|
/// The primary key.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object with the given primary key or null
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Find<T>(object pk) where T : new()
|
|
{
|
|
var map = GetMapping(typeof(T));
|
|
return Query<T>(map.GetByPrimaryKeySql, pk).FirstOrDefault();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve an object with the given primary key from the table
|
|
/// associated with the specified type. Use of this method requires that
|
|
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
|
|
/// </summary>
|
|
/// <param name="pk">
|
|
/// The primary key.
|
|
/// </param>
|
|
/// <param name="map">
|
|
/// The TableMapping used to identify the object type.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object with the given primary key or null
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public object Find(object pk, TableMapping map)
|
|
{
|
|
return Query(map, map.GetByPrimaryKeySql, pk).FirstOrDefault();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve the first object that matches the predicate from the table
|
|
/// associated with the specified type.
|
|
/// </summary>
|
|
/// <param name="predicate">
|
|
/// A predicate for which object to find.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object that matches the given predicate or null
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Find<T>(Expression<Func<T, bool>> predicate) where T : new()
|
|
{
|
|
return Table<T>().Where(predicate).FirstOrDefault();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Whether <see cref="BeginTransaction"/> has been called and the database is waiting for a <see cref="Commit"/>.
|
|
/// </summary>
|
|
public bool IsInTransaction
|
|
{
|
|
get { return _transactionDepth > 0; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Begins a new transaction. Call <see cref="Commit"/> to end the transaction.
|
|
/// </summary>
|
|
/// <example cref="System.InvalidOperationException">Throws if a transaction has already begun.</example>
|
|
public void BeginTransaction(bool exclusive = false)
|
|
{
|
|
// The BEGIN command only works if the transaction stack is empty,
|
|
// or in other words if there are no pending transactions.
|
|
// If the transaction stack is not empty when the BEGIN command is invoked,
|
|
// then the command fails with an error.
|
|
// Rather than crash with an error, we will just ignore calls to BeginTransaction
|
|
// that would result in an error.
|
|
if (Interlocked.CompareExchange(ref _transactionDepth, 1, 0) == 0)
|
|
{
|
|
try
|
|
{
|
|
if (exclusive)
|
|
{
|
|
Execute("BEGIN EXCLUSIVE TRANSACTION;");
|
|
}
|
|
else
|
|
{
|
|
Execute("begin transaction");
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
var sqlExp = ex as SQLiteException;
|
|
if (sqlExp != null)
|
|
{
|
|
// It is recommended that applications respond to the errors listed below
|
|
// by explicitly issuing a ROLLBACK command.
|
|
// TODO: This rollback failsafe should be localized to all throw sites.
|
|
switch (sqlExp.Result)
|
|
{
|
|
case SQLite3.Result.IOError:
|
|
case SQLite3.Result.Full:
|
|
case SQLite3.Result.Busy:
|
|
case SQLite3.Result.NoMem:
|
|
case SQLite3.Result.Interrupt:
|
|
RollbackTo(null, true);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Call decrement and not VolatileWrite in case we've already
|
|
// created a transaction point in SaveTransactionPoint since the catch.
|
|
Interlocked.Decrement(ref _transactionDepth);
|
|
}
|
|
|
|
throw;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Calling BeginTransaction on an already open transaction is invalid
|
|
throw new InvalidOperationException("Cannot begin a transaction while already in a transaction.");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a savepoint in the database at the current point in the transaction timeline.
|
|
/// Begins a new transaction if one is not in progress.
|
|
///
|
|
/// Call <see cref="RollbackTo"/> to undo transactions since the returned savepoint.
|
|
/// Call <see cref="Release"/> to commit transactions after the savepoint returned here.
|
|
/// Call <see cref="Commit"/> to end the transaction, committing all changes.
|
|
/// </summary>
|
|
/// <returns>A string naming the savepoint.</returns>
|
|
public string SaveTransactionPoint()
|
|
{
|
|
int depth = Interlocked.Increment(ref _transactionDepth) - 1;
|
|
string retVal = "S" + _rand.Next(short.MaxValue) + "D" + depth;
|
|
|
|
try
|
|
{
|
|
Execute("savepoint " + retVal);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
var sqlExp = ex as SQLiteException;
|
|
if (sqlExp != null)
|
|
{
|
|
// It is recommended that applications respond to the errors listed below
|
|
// by explicitly issuing a ROLLBACK command.
|
|
// TODO: This rollback failsafe should be localized to all throw sites.
|
|
switch (sqlExp.Result)
|
|
{
|
|
case SQLite3.Result.IOError:
|
|
case SQLite3.Result.Full:
|
|
case SQLite3.Result.Busy:
|
|
case SQLite3.Result.NoMem:
|
|
case SQLite3.Result.Interrupt:
|
|
RollbackTo(null, true);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Interlocked.Decrement(ref _transactionDepth);
|
|
}
|
|
|
|
throw;
|
|
}
|
|
|
|
return retVal;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rolls back the transaction that was begun by <see cref="BeginTransaction"/> or <see cref="SaveTransactionPoint"/>.
|
|
/// </summary>
|
|
public void Rollback()
|
|
{
|
|
RollbackTo(null, false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rolls back the savepoint created by <see cref="BeginTransaction"/> or SaveTransactionPoint.
|
|
/// </summary>
|
|
/// <param name="savepoint">The name of the savepoint to roll back to, as returned by <see cref="SaveTransactionPoint"/>. If savepoint is null or empty, this method is equivalent to a call to <see cref="Rollback"/></param>
|
|
public void RollbackTo(string savepoint)
|
|
{
|
|
RollbackTo(savepoint, false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rolls back the transaction that was begun by <see cref="BeginTransaction"/>.
|
|
/// </summary>
|
|
/// <param name="noThrow">true to avoid throwing exceptions, false otherwise</param>
|
|
void RollbackTo(string savepoint, bool noThrow)
|
|
{
|
|
// Rolling back without a TO clause rolls backs all transactions
|
|
// and leaves the transaction stack empty.
|
|
try
|
|
{
|
|
if (String.IsNullOrEmpty(savepoint))
|
|
{
|
|
if (Interlocked.Exchange(ref _transactionDepth, 0) > 0)
|
|
{
|
|
Execute("rollback");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
DoSavePointExecute(savepoint, "rollback to ");
|
|
}
|
|
}
|
|
catch (SQLiteException)
|
|
{
|
|
if (!noThrow)
|
|
throw;
|
|
|
|
}
|
|
// No need to rollback if there are no transactions open.
|
|
}
|
|
|
|
/// <summary>
|
|
/// Releases a savepoint returned from <see cref="SaveTransactionPoint"/>. Releasing a savepoint
|
|
/// makes changes since that savepoint permanent if the savepoint began the transaction,
|
|
/// or otherwise the changes are permanent pending a call to <see cref="Commit"/>.
|
|
///
|
|
/// The RELEASE command is like a COMMIT for a SAVEPOINT.
|
|
/// </summary>
|
|
/// <param name="savepoint">The name of the savepoint to release. The string should be the result of a call to <see cref="SaveTransactionPoint"/></param>
|
|
public void Release(string savepoint)
|
|
{
|
|
DoSavePointExecute(savepoint, "release ");
|
|
}
|
|
|
|
void DoSavePointExecute(string savepoint, string cmd)
|
|
{
|
|
// Validate the savepoint
|
|
int firstLen = savepoint.IndexOf('D');
|
|
if (firstLen >= 2 && savepoint.Length > firstLen + 1)
|
|
{
|
|
int depth;
|
|
if (Int32.TryParse(savepoint.Substring(firstLen + 1), out depth))
|
|
{
|
|
// TODO: Mild race here, but inescapable without locking almost everywhere.
|
|
if (0 <= depth && depth < _transactionDepth)
|
|
{
|
|
#if NETFX_CORE
|
|
Volatile.Write (ref _transactionDepth, depth);
|
|
#elif SILVERLIGHT
|
|
_transactionDepth = depth;
|
|
#else
|
|
Thread.VolatileWrite(ref _transactionDepth, depth);
|
|
#endif
|
|
Execute(cmd + savepoint);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
throw new ArgumentException("savePoint is not valid, and should be the result of a call to SaveTransactionPoint.", "savePoint");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Commits the transaction that was begun by <see cref="BeginTransaction"/>.
|
|
/// </summary>
|
|
public void Commit()
|
|
{
|
|
if (Interlocked.Exchange(ref _transactionDepth, 0) != 0)
|
|
{
|
|
Execute("commit");
|
|
}
|
|
// Do nothing on a commit with no open transaction
|
|
}
|
|
|
|
/// <summary>
|
|
/// Executes <param name="action"> within a (possibly nested) transaction by wrapping it in a SAVEPOINT. If an
|
|
/// exception occurs the whole transaction is rolled back, not just the current savepoint. The exception
|
|
/// is rethrown.
|
|
/// </summary>
|
|
/// <param name="action">
|
|
/// The <see cref="Action"/> to perform within a transaction. <param name="action"> can contain any number
|
|
/// of operations on the connection but should never call <see cref="BeginTransaction"/> or
|
|
/// <see cref="Commit"/>.
|
|
/// </param>
|
|
public void RunInTransaction(Action action)
|
|
{
|
|
try
|
|
{
|
|
var savePoint = SaveTransactionPoint();
|
|
action();
|
|
Release(savePoint);
|
|
}
|
|
catch (Exception)
|
|
{
|
|
Rollback();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int InsertAll(System.Collections.IEnumerable objects)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction(() =>
|
|
{
|
|
foreach (var r in objects)
|
|
{
|
|
c += Insert(r);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <param name="extra">
|
|
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int InsertAll(System.Collections.IEnumerable objects, string extra)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction(() =>
|
|
{
|
|
foreach (var r in objects)
|
|
{
|
|
c += Insert(r, extra);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int InsertAll(System.Collections.IEnumerable objects, Type objType)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction(() =>
|
|
{
|
|
foreach (var r in objects)
|
|
{
|
|
c += Insert(r, objType);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert(object obj)
|
|
{
|
|
if (obj == null)
|
|
{
|
|
return 0;
|
|
}
|
|
return Insert(obj, "", obj.GetType());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// If a UNIQUE constraint violation occurs with
|
|
/// some pre-existing object, this function deletes
|
|
/// the old object.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified.
|
|
/// </returns>
|
|
public int InsertOrReplace(object obj)
|
|
{
|
|
if (obj == null)
|
|
{
|
|
return 0;
|
|
}
|
|
return Insert(obj, "OR REPLACE", obj.GetType());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert(object obj, Type objType)
|
|
{
|
|
return Insert(obj, "", objType);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// If a UNIQUE constraint violation occurs with
|
|
/// some pre-existing object, this function deletes
|
|
/// the old object.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified.
|
|
/// </returns>
|
|
public int InsertOrReplace(object obj, Type objType)
|
|
{
|
|
return Insert(obj, "OR REPLACE", objType);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="extra">
|
|
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert(object obj, string extra)
|
|
{
|
|
if (obj == null)
|
|
{
|
|
return 0;
|
|
}
|
|
return Insert(obj, extra, obj.GetType());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="extra">
|
|
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert(object obj, string extra, Type objType)
|
|
{
|
|
if (obj == null || objType == null)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
var map = GetMapping(objType);
|
|
|
|
#if NETFX_CORE
|
|
if (map.PK != null && map.PK.IsAutoInc)
|
|
{
|
|
// no GetProperty so search our way up the inheritance chain till we find it
|
|
PropertyInfo prop;
|
|
while (objType != null)
|
|
{
|
|
var info = objType.GetTypeInfo();
|
|
prop = info.GetDeclaredProperty(map.PK.PropertyName);
|
|
if (prop != null)
|
|
{
|
|
if (prop.GetValue(obj, null).Equals(Guid.Empty))
|
|
{
|
|
prop.SetValue(obj, Guid.NewGuid(), null);
|
|
}
|
|
break;
|
|
}
|
|
|
|
objType = info.BaseType;
|
|
}
|
|
}
|
|
#else
|
|
if (map.PK != null && map.PK.IsAutoInc)
|
|
{
|
|
var prop = objType.GetProperty(map.PK.PropertyName);
|
|
if (prop != null)
|
|
{
|
|
if (prop.GetValue(obj, null).Equals(Guid.Empty))
|
|
{
|
|
prop.SetValue(obj, Guid.NewGuid(), null);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
var replacing = string.Compare(extra, "OR REPLACE", StringComparison.OrdinalIgnoreCase) == 0;
|
|
|
|
var cols = replacing ? map.InsertOrReplaceColumns : map.InsertColumns;
|
|
var vals = new object[cols.Length];
|
|
for (var i = 0; i < vals.Length; i++)
|
|
{
|
|
vals[i] = cols[i].GetValue(obj);
|
|
}
|
|
|
|
var insertCmd = map.GetInsertCommand(this, extra);
|
|
int count;
|
|
|
|
try
|
|
{
|
|
count = insertCmd.ExecuteNonQuery(vals);
|
|
}
|
|
catch (SQLiteException ex)
|
|
{
|
|
|
|
if (SQLite3.ExtendedErrCode(this.Handle) == SQLite3.ExtendedResult.ConstraintNotNull)
|
|
{
|
|
throw NotNullConstraintViolationException.New(ex.Result, ex.Message, map, obj);
|
|
}
|
|
throw;
|
|
}
|
|
|
|
if (map.HasAutoIncPK)
|
|
{
|
|
var id = SQLite3.LastInsertRowid(Handle);
|
|
map.SetAutoIncPK(obj, id);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all of the columns of a table using the specified object
|
|
/// except for its primary key.
|
|
/// The object is required to have a primary key.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to update. It must have a primary key designated using the PrimaryKeyAttribute.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows updated.
|
|
/// </returns>
|
|
public int Update(object obj)
|
|
{
|
|
if (obj == null)
|
|
{
|
|
return 0;
|
|
}
|
|
return Update(obj, obj.GetType());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all of the columns of a table using the specified object
|
|
/// except for its primary key.
|
|
/// The object is required to have a primary key.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to update. It must have a primary key designated using the PrimaryKeyAttribute.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows updated.
|
|
/// </returns>
|
|
public int Update(object obj, Type objType)
|
|
{
|
|
int rowsAffected = 0;
|
|
if (obj == null || objType == null)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
var map = GetMapping(objType);
|
|
|
|
var pk = map.PK;
|
|
|
|
if (pk == null)
|
|
{
|
|
throw new NotSupportedException("Cannot update " + map.TableName + ": it has no PK");
|
|
}
|
|
|
|
var cols = from p in map.Columns
|
|
where p != pk
|
|
select p;
|
|
var vals = from c in cols
|
|
select c.GetValue(obj);
|
|
var ps = new List<object>(vals);
|
|
ps.Add(pk.GetValue(obj));
|
|
var q = string.Format("update \"{0}\" set {1} where {2} = ? ", map.TableName, string.Join(",", (from c in cols
|
|
select "\"" + c.Name + "\" = ? ").ToArray()), pk.Name);
|
|
|
|
try
|
|
{
|
|
rowsAffected = Execute(q, ps.ToArray());
|
|
}
|
|
catch (SQLiteException ex)
|
|
{
|
|
|
|
if (ex.Result == SQLite3.Result.Constraint && SQLite3.ExtendedErrCode(this.Handle) == SQLite3.ExtendedResult.ConstraintNotNull)
|
|
{
|
|
throw NotNullConstraintViolationException.New(ex, map, obj);
|
|
}
|
|
|
|
throw ex;
|
|
}
|
|
|
|
return rowsAffected;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified.
|
|
/// </returns>
|
|
public int UpdateAll(System.Collections.IEnumerable objects)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction(() =>
|
|
{
|
|
foreach (var r in objects)
|
|
{
|
|
c += Update(r);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes the given object from the database using its primary key.
|
|
/// </summary>
|
|
/// <param name="objectToDelete">
|
|
/// The object to delete. It must have a primary key designated using the PrimaryKeyAttribute.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows deleted.
|
|
/// </returns>
|
|
public int Delete(object objectToDelete)
|
|
{
|
|
var map = GetMapping(objectToDelete.GetType());
|
|
var pk = map.PK;
|
|
if (pk == null)
|
|
{
|
|
throw new NotSupportedException("Cannot delete " + map.TableName + ": it has no PK");
|
|
}
|
|
var q = string.Format("delete from \"{0}\" where \"{1}\" = ?", map.TableName, pk.Name);
|
|
return Execute(q, pk.GetValue(objectToDelete));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes the object with the specified primary key.
|
|
/// </summary>
|
|
/// <param name="primaryKey">
|
|
/// The primary key of the object to delete.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of objects deleted.
|
|
/// </returns>
|
|
/// <typeparam name='T'>
|
|
/// The type of object.
|
|
/// </typeparam>
|
|
public int Delete<T>(object primaryKey)
|
|
{
|
|
var map = GetMapping(typeof(T));
|
|
var pk = map.PK;
|
|
if (pk == null)
|
|
{
|
|
throw new NotSupportedException("Cannot delete " + map.TableName + ": it has no PK");
|
|
}
|
|
var q = string.Format("delete from \"{0}\" where \"{1}\" = ?", map.TableName, pk.Name);
|
|
return Execute(q, primaryKey);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes all the objects from the specified table.
|
|
/// WARNING WARNING: Let me repeat. It deletes ALL the objects from the
|
|
/// specified table. Do you really want to do that?
|
|
/// </summary>
|
|
/// <returns>
|
|
/// The number of objects deleted.
|
|
/// </returns>
|
|
/// <typeparam name='T'>
|
|
/// The type of objects to delete.
|
|
/// </typeparam>
|
|
public int DeleteAll<T>()
|
|
{
|
|
var map = GetMapping(typeof(T));
|
|
var query = string.Format("delete from \"{0}\"", map.TableName);
|
|
return Execute(query);
|
|
}
|
|
|
|
~SQLiteConnection()
|
|
{
|
|
Dispose(false);
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
protected virtual void Dispose(bool disposing)
|
|
{
|
|
Close();
|
|
}
|
|
|
|
public void Close()
|
|
{
|
|
if (_open && Handle != NullHandle)
|
|
{
|
|
try
|
|
{
|
|
if (_mappings != null)
|
|
{
|
|
foreach (var sqlInsertCommand in _mappings.Values)
|
|
{
|
|
sqlInsertCommand.Dispose();
|
|
}
|
|
}
|
|
var r = SQLite3.Close(Handle);
|
|
if (r != SQLite3.Result.OK)
|
|
{
|
|
string msg = SQLite3.GetErrmsg(Handle);
|
|
throw SQLiteException.New(r, msg);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
Handle = NullHandle;
|
|
_open = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Represents a parsed connection string.
|
|
/// </summary>
|
|
class SQLiteConnectionString
|
|
{
|
|
public string ConnectionString { get; private set; }
|
|
public string DatabasePath { get; private set; }
|
|
public bool StoreDateTimeAsTicks { get; private set; }
|
|
|
|
#if NETFX_CORE
|
|
static readonly string MetroStyleDataPath = Windows.Storage.ApplicationData.Current.LocalFolder.Path;
|
|
#endif
|
|
|
|
public SQLiteConnectionString(string databasePath, bool storeDateTimeAsTicks)
|
|
{
|
|
ConnectionString = databasePath;
|
|
StoreDateTimeAsTicks = storeDateTimeAsTicks;
|
|
|
|
#if NETFX_CORE
|
|
DatabasePath = System.IO.Path.Combine (MetroStyleDataPath, databasePath);
|
|
#else
|
|
DatabasePath = databasePath;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Class)]
|
|
public class TableAttribute : Attribute
|
|
{
|
|
public string Name { get; set; }
|
|
|
|
public TableAttribute(string name)
|
|
{
|
|
Name = name;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class ColumnAttribute : Attribute
|
|
{
|
|
public string Name { get; set; }
|
|
|
|
public ColumnAttribute(string name)
|
|
{
|
|
Name = name;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class PrimaryKeyAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class AutoIncrementAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class IndexedAttribute : Attribute
|
|
{
|
|
public string Name { get; set; }
|
|
public int Order { get; set; }
|
|
public virtual bool Unique { get; set; }
|
|
|
|
public IndexedAttribute()
|
|
{
|
|
}
|
|
|
|
public IndexedAttribute(string name, int order)
|
|
{
|
|
Name = name;
|
|
Order = order;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class IgnoreAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class UniqueAttribute : IndexedAttribute
|
|
{
|
|
public override bool Unique
|
|
{
|
|
get { return true; }
|
|
set { /* throw? */ }
|
|
}
|
|
|
|
public UniqueAttribute() : base()
|
|
{
|
|
}
|
|
|
|
public UniqueAttribute(string name, int order) : base(name, order)
|
|
{
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class MaxLengthAttribute : Attribute
|
|
{
|
|
public int Value { get; private set; }
|
|
|
|
public MaxLengthAttribute(int length)
|
|
{
|
|
Value = length;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class CollationAttribute : Attribute
|
|
{
|
|
public string Value { get; private set; }
|
|
|
|
public CollationAttribute(string collation)
|
|
{
|
|
Value = collation;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage(AttributeTargets.Property)]
|
|
public class NotNullAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
public class TableMapping
|
|
{
|
|
public Type MappedType { get; private set; }
|
|
|
|
public string TableName { get; private set; }
|
|
|
|
public Column[] Columns { get; private set; }
|
|
|
|
public Column PK { get; private set; }
|
|
|
|
public string GetByPrimaryKeySql { get; private set; }
|
|
|
|
Column _autoPk;
|
|
Column[] _insertColumns;
|
|
Column[] _insertOrReplaceColumns;
|
|
|
|
public TableMapping(Type type, CreateFlags createFlags = CreateFlags.None)
|
|
{
|
|
MappedType = type;
|
|
|
|
#if NETFX_CORE
|
|
var tableAttr = (TableAttribute)System.Reflection.CustomAttributeExtensions
|
|
.GetCustomAttribute(type.GetTypeInfo(), typeof(TableAttribute), true);
|
|
#else
|
|
var tableAttr = (TableAttribute)type.GetCustomAttributes(typeof(TableAttribute), true).FirstOrDefault();
|
|
#endif
|
|
|
|
TableName = tableAttr != null ? tableAttr.Name : MappedType.Name;
|
|
|
|
#if !NETFX_CORE
|
|
var props = MappedType.GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetProperty);
|
|
#else
|
|
var props = from p in MappedType.GetRuntimeProperties()
|
|
where ((p.GetMethod != null && p.GetMethod.IsPublic) || (p.SetMethod != null && p.SetMethod.IsPublic) || (p.GetMethod != null && p.GetMethod.IsStatic) || (p.SetMethod != null && p.SetMethod.IsStatic))
|
|
select p;
|
|
#endif
|
|
var cols = new List<Column>();
|
|
foreach (var p in props)
|
|
{
|
|
#if !NETFX_CORE
|
|
var ignore = p.GetCustomAttributes(typeof(IgnoreAttribute), true).Length > 0;
|
|
#else
|
|
var ignore = p.GetCustomAttributes (typeof(IgnoreAttribute), true).Count() > 0;
|
|
#endif
|
|
if (p.CanWrite && !ignore)
|
|
{
|
|
cols.Add(new Column(p, createFlags));
|
|
}
|
|
}
|
|
Columns = cols.ToArray();
|
|
foreach (var c in Columns)
|
|
{
|
|
if (c.IsAutoInc && c.IsPK)
|
|
{
|
|
_autoPk = c;
|
|
}
|
|
if (c.IsPK)
|
|
{
|
|
PK = c;
|
|
}
|
|
}
|
|
|
|
HasAutoIncPK = _autoPk != null;
|
|
|
|
if (PK != null)
|
|
{
|
|
GetByPrimaryKeySql = string.Format("select * from \"{0}\" where \"{1}\" = ?", TableName, PK.Name);
|
|
}
|
|
else
|
|
{
|
|
// People should not be calling Get/Find without a PK
|
|
GetByPrimaryKeySql = string.Format("select * from \"{0}\" limit 1", TableName);
|
|
}
|
|
}
|
|
|
|
public bool HasAutoIncPK { get; private set; }
|
|
|
|
public void SetAutoIncPK(object obj, long id)
|
|
{
|
|
if (_autoPk != null)
|
|
{
|
|
_autoPk.SetValue(obj, Convert.ChangeType(id, _autoPk.ColumnType, null));
|
|
}
|
|
}
|
|
|
|
public Column[] InsertColumns
|
|
{
|
|
get
|
|
{
|
|
if (_insertColumns == null)
|
|
{
|
|
_insertColumns = Columns.Where(c => !c.IsAutoInc).ToArray();
|
|
}
|
|
return _insertColumns;
|
|
}
|
|
}
|
|
|
|
public Column[] InsertOrReplaceColumns
|
|
{
|
|
get
|
|
{
|
|
if (_insertOrReplaceColumns == null)
|
|
{
|
|
_insertOrReplaceColumns = Columns.ToArray();
|
|
}
|
|
return _insertOrReplaceColumns;
|
|
}
|
|
}
|
|
|
|
public Column FindColumnWithPropertyName(string propertyName)
|
|
{
|
|
var exact = Columns.FirstOrDefault(c => c.PropertyName == propertyName);
|
|
return exact;
|
|
}
|
|
|
|
public Column FindColumn(string columnName)
|
|
{
|
|
var exact = Columns.FirstOrDefault(c => c.Name == columnName);
|
|
return exact;
|
|
}
|
|
|
|
PreparedSqlLiteInsertCommand _insertCommand;
|
|
string _insertCommandExtra;
|
|
|
|
public PreparedSqlLiteInsertCommand GetInsertCommand(SQLiteConnection conn, string extra)
|
|
{
|
|
if (_insertCommand == null)
|
|
{
|
|
_insertCommand = CreateInsertCommand(conn, extra);
|
|
_insertCommandExtra = extra;
|
|
}
|
|
else if (_insertCommandExtra != extra)
|
|
{
|
|
_insertCommand.Dispose();
|
|
_insertCommand = CreateInsertCommand(conn, extra);
|
|
_insertCommandExtra = extra;
|
|
}
|
|
return _insertCommand;
|
|
}
|
|
|
|
PreparedSqlLiteInsertCommand CreateInsertCommand(SQLiteConnection conn, string extra)
|
|
{
|
|
var cols = InsertColumns;
|
|
string insertSql;
|
|
if (!cols.Any() && Columns.Count() == 1 && Columns[0].IsAutoInc)
|
|
{
|
|
insertSql = string.Format("insert {1} into \"{0}\" default values", TableName, extra);
|
|
}
|
|
else
|
|
{
|
|
var replacing = string.Compare(extra, "OR REPLACE", StringComparison.OrdinalIgnoreCase) == 0;
|
|
|
|
if (replacing)
|
|
{
|
|
cols = InsertOrReplaceColumns;
|
|
}
|
|
|
|
insertSql = string.Format("insert {3} into \"{0}\"({1}) values ({2})", TableName,
|
|
string.Join(",", (from c in cols
|
|
select "\"" + c.Name + "\"").ToArray()),
|
|
string.Join(",", (from c in cols
|
|
select "?").ToArray()), extra);
|
|
|
|
}
|
|
|
|
var insertCommand = new PreparedSqlLiteInsertCommand(conn);
|
|
insertCommand.CommandText = insertSql;
|
|
return insertCommand;
|
|
}
|
|
|
|
protected internal void Dispose()
|
|
{
|
|
if (_insertCommand != null)
|
|
{
|
|
_insertCommand.Dispose();
|
|
_insertCommand = null;
|
|
}
|
|
}
|
|
|
|
public class Column
|
|
{
|
|
PropertyInfo _prop;
|
|
|
|
public string Name { get; private set; }
|
|
|
|
public string PropertyName { get { return _prop.Name; } }
|
|
|
|
public Type ColumnType { get; private set; }
|
|
|
|
public string Collation { get; private set; }
|
|
|
|
public bool IsAutoInc { get; private set; }
|
|
public bool IsAutoGuid { get; private set; }
|
|
|
|
public bool IsPK { get; private set; }
|
|
|
|
public IEnumerable<IndexedAttribute> Indices { get; set; }
|
|
|
|
public bool IsNullable { get; private set; }
|
|
|
|
public int? MaxStringLength { get; private set; }
|
|
|
|
public Column(PropertyInfo prop, CreateFlags createFlags = CreateFlags.None)
|
|
{
|
|
var colAttr = (ColumnAttribute)prop.GetCustomAttributes(typeof(ColumnAttribute), true).FirstOrDefault();
|
|
|
|
_prop = prop;
|
|
Name = colAttr == null ? prop.Name : colAttr.Name;
|
|
//If this type is Nullable<T> then Nullable.GetUnderlyingType returns the T, otherwise it returns null, so get the actual type instead
|
|
ColumnType = Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType;
|
|
Collation = Orm.Collation(prop);
|
|
|
|
IsPK = Orm.IsPK(prop) ||
|
|
(((createFlags & CreateFlags.ImplicitPK) == CreateFlags.ImplicitPK) &&
|
|
string.Compare(prop.Name, Orm.ImplicitPkName, StringComparison.OrdinalIgnoreCase) == 0);
|
|
|
|
var isAuto = Orm.IsAutoInc(prop) || (IsPK && ((createFlags & CreateFlags.AutoIncPK) == CreateFlags.AutoIncPK));
|
|
IsAutoGuid = isAuto && ColumnType == typeof(Guid);
|
|
IsAutoInc = isAuto && !IsAutoGuid || isAuto;
|
|
|
|
Indices = Orm.GetIndices(prop);
|
|
if (!Indices.Any()
|
|
&& !IsPK
|
|
&& ((createFlags & CreateFlags.ImplicitIndex) == CreateFlags.ImplicitIndex)
|
|
&& Name.EndsWith(Orm.ImplicitIndexSuffix, StringComparison.OrdinalIgnoreCase)
|
|
)
|
|
{
|
|
Indices = new IndexedAttribute[] { new IndexedAttribute() };
|
|
}
|
|
IsNullable = !(IsPK || Orm.IsMarkedNotNull(prop));
|
|
MaxStringLength = Orm.MaxStringLength(prop);
|
|
}
|
|
|
|
public void SetValue(object obj, object val)
|
|
{
|
|
_prop.SetValue(obj, val, null);
|
|
}
|
|
|
|
public object GetValue(object obj)
|
|
{
|
|
return _prop.GetValue(obj, null);
|
|
}
|
|
}
|
|
}
|
|
|
|
public static class Orm
|
|
{
|
|
public const int DefaultMaxStringLength = 140;
|
|
public const string ImplicitPkName = "Id";
|
|
public const string ImplicitIndexSuffix = "Id";
|
|
|
|
public static string SqlDecl(TableMapping.Column p, bool storeDateTimeAsTicks)
|
|
{
|
|
string decl = "\"" + p.Name + "\" " + SqlType(p, storeDateTimeAsTicks) + " ";
|
|
|
|
if (p.IsPK)
|
|
{
|
|
decl += "primary key ";
|
|
}
|
|
if (p.IsAutoInc)
|
|
{
|
|
decl += "autoincrement ";
|
|
}
|
|
if (!p.IsNullable)
|
|
{
|
|
decl += "not null ";
|
|
}
|
|
if (!string.IsNullOrEmpty(p.Collation))
|
|
{
|
|
decl += "collate " + p.Collation + " ";
|
|
}
|
|
|
|
return decl;
|
|
}
|
|
|
|
public static string SqlType(TableMapping.Column p, bool storeDateTimeAsTicks)
|
|
{
|
|
var clrType = p.ColumnType;
|
|
if (clrType == typeof(Boolean) || clrType == typeof(Byte) || clrType == typeof(UInt16) || clrType == typeof(SByte) || clrType == typeof(Int16) || clrType == typeof(Int32))
|
|
{
|
|
return "integer";
|
|
}
|
|
else if (clrType == typeof(UInt32) || clrType == typeof(Int64))
|
|
{
|
|
return "bigint";
|
|
}
|
|
else if (clrType == typeof(Single) || clrType == typeof(Double) || clrType == typeof(Decimal))
|
|
{
|
|
return "float";
|
|
}
|
|
else if (clrType == typeof(String))
|
|
{
|
|
int? len = p.MaxStringLength;
|
|
|
|
if (len.HasValue)
|
|
return "varchar(" + len.Value + ")";
|
|
|
|
return "varchar";
|
|
}
|
|
else if (clrType == typeof(TimeSpan))
|
|
{
|
|
return "bigint";
|
|
}
|
|
else if (clrType == typeof(DateTime))
|
|
{
|
|
return storeDateTimeAsTicks ? "bigint" : "datetime";
|
|
}
|
|
else if (clrType == typeof(DateTimeOffset))
|
|
{
|
|
return "bigint";
|
|
#if !NETFX_CORE
|
|
}
|
|
else if (clrType.IsEnum)
|
|
{
|
|
#else
|
|
} else if (clrType.GetTypeInfo().IsEnum) {
|
|
#endif
|
|
return "integer";
|
|
}
|
|
else if (clrType == typeof(byte[]))
|
|
{
|
|
return "blob";
|
|
}
|
|
else if (clrType == typeof(Guid))
|
|
{
|
|
return "varchar(36)";
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Don't know about " + clrType);
|
|
}
|
|
}
|
|
|
|
public static bool IsPK(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(PrimaryKeyAttribute), true);
|
|
#if !NETFX_CORE
|
|
return attrs.Length > 0;
|
|
#else
|
|
return attrs.Count() > 0;
|
|
#endif
|
|
}
|
|
|
|
public static string Collation(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(CollationAttribute), true);
|
|
#if !NETFX_CORE
|
|
if (attrs.Length > 0)
|
|
{
|
|
return ((CollationAttribute)attrs[0]).Value;
|
|
#else
|
|
if (attrs.Count() > 0) {
|
|
return ((CollationAttribute)attrs.First()).Value;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
return string.Empty;
|
|
}
|
|
}
|
|
|
|
public static bool IsAutoInc(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(AutoIncrementAttribute), true);
|
|
#if !NETFX_CORE
|
|
return attrs.Length > 0;
|
|
#else
|
|
return attrs.Count() > 0;
|
|
#endif
|
|
}
|
|
|
|
public static IEnumerable<IndexedAttribute> GetIndices(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(IndexedAttribute), true);
|
|
return attrs.Cast<IndexedAttribute>();
|
|
}
|
|
|
|
public static int? MaxStringLength(PropertyInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(MaxLengthAttribute), true);
|
|
#if !NETFX_CORE
|
|
if (attrs.Length > 0)
|
|
return ((MaxLengthAttribute)attrs[0]).Value;
|
|
#else
|
|
if (attrs.Count() > 0)
|
|
return ((MaxLengthAttribute)attrs.First()).Value;
|
|
#endif
|
|
|
|
return null;
|
|
}
|
|
|
|
public static bool IsMarkedNotNull(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(NotNullAttribute), true);
|
|
#if !NETFX_CORE
|
|
return attrs.Length > 0;
|
|
#else
|
|
return attrs.Count() > 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
public partial class SQLiteCommand
|
|
{
|
|
SQLiteConnection _conn;
|
|
private List<Binding> _bindings;
|
|
|
|
public string CommandText { get; set; }
|
|
|
|
internal SQLiteCommand(SQLiteConnection conn)
|
|
{
|
|
_conn = conn;
|
|
_bindings = new List<Binding>();
|
|
CommandText = "";
|
|
}
|
|
|
|
public int ExecuteNonQuery()
|
|
{
|
|
if (_conn.Trace)
|
|
{
|
|
Debug.WriteLine("Executing: " + this);
|
|
}
|
|
|
|
var r = SQLite3.Result.OK;
|
|
var stmt = Prepare();
|
|
r = SQLite3.Step(stmt);
|
|
Finalize(stmt);
|
|
if (r == SQLite3.Result.Done)
|
|
{
|
|
int rowsAffected = SQLite3.Changes(_conn.Handle);
|
|
return rowsAffected;
|
|
}
|
|
else if (r == SQLite3.Result.Error)
|
|
{
|
|
string msg = SQLite3.GetErrmsg(_conn.Handle);
|
|
throw SQLiteException.New(r, msg);
|
|
}
|
|
else if (r == SQLite3.Result.Constraint)
|
|
{
|
|
if (SQLite3.ExtendedErrCode(_conn.Handle) == SQLite3.ExtendedResult.ConstraintNotNull)
|
|
{
|
|
throw NotNullConstraintViolationException.New(r, SQLite3.GetErrmsg(_conn.Handle));
|
|
}
|
|
}
|
|
|
|
throw SQLiteException.New(r, r.ToString());
|
|
}
|
|
|
|
public IEnumerable<T> ExecuteDeferredQuery<T>()
|
|
{
|
|
return ExecuteDeferredQuery<T>(_conn.GetMapping(typeof(T)));
|
|
}
|
|
|
|
public List<T> ExecuteQuery<T>()
|
|
{
|
|
return ExecuteDeferredQuery<T>(_conn.GetMapping(typeof(T))).ToList();
|
|
}
|
|
|
|
public List<T> ExecuteQuery<T>(TableMapping map)
|
|
{
|
|
return ExecuteDeferredQuery<T>(map).ToList();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Invoked every time an instance is loaded from the database.
|
|
/// </summary>
|
|
/// <param name='obj'>
|
|
/// The newly created object.
|
|
/// </param>
|
|
/// <remarks>
|
|
/// This can be overridden in combination with the <see cref="SQLiteConnection.NewCommand"/>
|
|
/// method to hook into the life-cycle of objects.
|
|
///
|
|
/// Type safety is not possible because MonoTouch does not support virtual generic methods.
|
|
/// </remarks>
|
|
protected virtual void OnInstanceCreated(object obj)
|
|
{
|
|
// Can be overridden.
|
|
}
|
|
|
|
public IEnumerable<T> ExecuteDeferredQuery<T>(TableMapping map)
|
|
{
|
|
if (_conn.Trace)
|
|
{
|
|
Debug.WriteLine("Executing Query: " + this);
|
|
}
|
|
|
|
var stmt = Prepare();
|
|
try
|
|
{
|
|
var cols = new TableMapping.Column[SQLite3.ColumnCount(stmt)];
|
|
|
|
for (int i = 0; i < cols.Length; i++)
|
|
{
|
|
var name = SQLite3.ColumnName16(stmt, i);
|
|
cols[i] = map.FindColumn(name);
|
|
}
|
|
|
|
while (SQLite3.Step(stmt) == SQLite3.Result.Row)
|
|
{
|
|
var obj = Activator.CreateInstance(map.MappedType);
|
|
for (int i = 0; i < cols.Length; i++)
|
|
{
|
|
if (cols[i] == null)
|
|
continue;
|
|
var colType = SQLite3.ColumnType(stmt, i);
|
|
var val = ReadCol(stmt, i, colType, cols[i].ColumnType);
|
|
cols[i].SetValue(obj, val);
|
|
}
|
|
OnInstanceCreated(obj);
|
|
yield return (T)obj;
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
SQLite3.Finalize(stmt);
|
|
}
|
|
}
|
|
|
|
public T ExecuteScalar<T>()
|
|
{
|
|
if (_conn.Trace)
|
|
{
|
|
Debug.WriteLine("Executing Query: " + this);
|
|
}
|
|
|
|
T val = default(T);
|
|
|
|
var stmt = Prepare();
|
|
|
|
try
|
|
{
|
|
var r = SQLite3.Step(stmt);
|
|
if (r == SQLite3.Result.Row)
|
|
{
|
|
var colType = SQLite3.ColumnType(stmt, 0);
|
|
val = (T)ReadCol(stmt, 0, colType, typeof(T));
|
|
}
|
|
else if (r == SQLite3.Result.Done)
|
|
{
|
|
}
|
|
else
|
|
{
|
|
throw SQLiteException.New(r, SQLite3.GetErrmsg(_conn.Handle));
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
Finalize(stmt);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
public void Bind(string name, object val)
|
|
{
|
|
_bindings.Add(new Binding
|
|
{
|
|
Name = name,
|
|
Value = val
|
|
});
|
|
}
|
|
|
|
public void Bind(object val)
|
|
{
|
|
Bind(null, val);
|
|
}
|
|
|
|
public override string ToString()
|
|
{
|
|
var parts = new string[1 + _bindings.Count];
|
|
parts[0] = CommandText;
|
|
var i = 1;
|
|
foreach (var b in _bindings)
|
|
{
|
|
parts[i] = string.Format(" {0}: {1}", i - 1, b.Value);
|
|
i++;
|
|
}
|
|
return string.Join(Environment.NewLine, parts);
|
|
}
|
|
|
|
Sqlite3Statement Prepare()
|
|
{
|
|
var stmt = SQLite3.Prepare2(_conn.Handle, CommandText);
|
|
BindAll(stmt);
|
|
return stmt;
|
|
}
|
|
|
|
void Finalize(Sqlite3Statement stmt)
|
|
{
|
|
SQLite3.Finalize(stmt);
|
|
}
|
|
|
|
void BindAll(Sqlite3Statement stmt)
|
|
{
|
|
int nextIdx = 1;
|
|
foreach (var b in _bindings)
|
|
{
|
|
if (b.Name != null)
|
|
{
|
|
b.Index = SQLite3.BindParameterIndex(stmt, b.Name);
|
|
}
|
|
else
|
|
{
|
|
b.Index = nextIdx++;
|
|
}
|
|
|
|
BindParameter(stmt, b.Index, b.Value, _conn.StoreDateTimeAsTicks);
|
|
}
|
|
}
|
|
|
|
internal static IntPtr NegativePointer = new IntPtr(-1);
|
|
|
|
internal static void BindParameter(Sqlite3Statement stmt, int index, object value, bool storeDateTimeAsTicks)
|
|
{
|
|
if (value == null)
|
|
{
|
|
SQLite3.BindNull(stmt, index);
|
|
}
|
|
else
|
|
{
|
|
if (value is Int32)
|
|
{
|
|
SQLite3.BindInt(stmt, index, (int)value);
|
|
}
|
|
else if (value is String)
|
|
{
|
|
SQLite3.BindText(stmt, index, (string)value, -1, NegativePointer);
|
|
}
|
|
else if (value is Byte || value is UInt16 || value is SByte || value is Int16)
|
|
{
|
|
SQLite3.BindInt(stmt, index, Convert.ToInt32(value));
|
|
}
|
|
else if (value is Boolean)
|
|
{
|
|
SQLite3.BindInt(stmt, index, (bool)value ? 1 : 0);
|
|
}
|
|
else if (value is UInt32 || value is Int64)
|
|
{
|
|
SQLite3.BindInt64(stmt, index, Convert.ToInt64(value));
|
|
}
|
|
else if (value is Single || value is Double || value is Decimal)
|
|
{
|
|
SQLite3.BindDouble(stmt, index, Convert.ToDouble(value));
|
|
}
|
|
else if (value is TimeSpan)
|
|
{
|
|
SQLite3.BindInt64(stmt, index, ((TimeSpan)value).Ticks);
|
|
}
|
|
else if (value is DateTime)
|
|
{
|
|
if (storeDateTimeAsTicks)
|
|
{
|
|
SQLite3.BindInt64(stmt, index, ((DateTime)value).Ticks);
|
|
}
|
|
else
|
|
{
|
|
SQLite3.BindText(stmt, index, ((DateTime)value).ToString("yyyy-MM-dd HH:mm:ss"), -1, NegativePointer);
|
|
}
|
|
}
|
|
else if (value is DateTimeOffset)
|
|
{
|
|
SQLite3.BindInt64(stmt, index, ((DateTimeOffset)value).UtcTicks);
|
|
#if !NETFX_CORE
|
|
}
|
|
else if (value.GetType().IsEnum)
|
|
{
|
|
#else
|
|
} else if (value.GetType().GetTypeInfo().IsEnum) {
|
|
#endif
|
|
SQLite3.BindInt(stmt, index, Convert.ToInt32(value));
|
|
}
|
|
else if (value is byte[])
|
|
{
|
|
SQLite3.BindBlob(stmt, index, (byte[])value, ((byte[])value).Length, NegativePointer);
|
|
}
|
|
else if (value is Guid)
|
|
{
|
|
SQLite3.BindText(stmt, index, ((Guid)value).ToString(), 72, NegativePointer);
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Cannot store type: " + value.GetType());
|
|
}
|
|
}
|
|
}
|
|
|
|
class Binding
|
|
{
|
|
public string Name { get; set; }
|
|
|
|
public object Value { get; set; }
|
|
|
|
public int Index { get; set; }
|
|
}
|
|
|
|
object ReadCol(Sqlite3Statement stmt, int index, SQLite3.ColType type, Type clrType)
|
|
{
|
|
if (type == SQLite3.ColType.Null)
|
|
{
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
if (clrType == typeof(String))
|
|
{
|
|
return SQLite3.ColumnString(stmt, index);
|
|
}
|
|
else if (clrType == typeof(Int32))
|
|
{
|
|
return (int)SQLite3.ColumnInt(stmt, index);
|
|
}
|
|
else if (clrType == typeof(Boolean))
|
|
{
|
|
return SQLite3.ColumnInt(stmt, index) == 1;
|
|
}
|
|
else if (clrType == typeof(double))
|
|
{
|
|
return SQLite3.ColumnDouble(stmt, index);
|
|
}
|
|
else if (clrType == typeof(float))
|
|
{
|
|
return (float)SQLite3.ColumnDouble(stmt, index);
|
|
}
|
|
else if (clrType == typeof(TimeSpan))
|
|
{
|
|
return new TimeSpan(SQLite3.ColumnInt64(stmt, index));
|
|
}
|
|
else if (clrType == typeof(DateTime))
|
|
{
|
|
if (_conn.StoreDateTimeAsTicks)
|
|
{
|
|
return new DateTime(SQLite3.ColumnInt64(stmt, index));
|
|
}
|
|
else
|
|
{
|
|
var text = SQLite3.ColumnString(stmt, index);
|
|
return DateTime.Parse(text);
|
|
}
|
|
}
|
|
else if (clrType == typeof(DateTimeOffset))
|
|
{
|
|
return new DateTimeOffset(SQLite3.ColumnInt64(stmt, index), TimeSpan.Zero);
|
|
#if !NETFX_CORE
|
|
}
|
|
else if (clrType.IsEnum)
|
|
{
|
|
#else
|
|
} else if (clrType.GetTypeInfo().IsEnum) {
|
|
#endif
|
|
return SQLite3.ColumnInt(stmt, index);
|
|
}
|
|
else if (clrType == typeof(Int64))
|
|
{
|
|
return SQLite3.ColumnInt64(stmt, index);
|
|
}
|
|
else if (clrType == typeof(UInt32))
|
|
{
|
|
return (uint)SQLite3.ColumnInt64(stmt, index);
|
|
}
|
|
else if (clrType == typeof(decimal))
|
|
{
|
|
return (decimal)SQLite3.ColumnDouble(stmt, index);
|
|
}
|
|
else if (clrType == typeof(Byte))
|
|
{
|
|
return (byte)SQLite3.ColumnInt(stmt, index);
|
|
}
|
|
else if (clrType == typeof(UInt16))
|
|
{
|
|
return (ushort)SQLite3.ColumnInt(stmt, index);
|
|
}
|
|
else if (clrType == typeof(Int16))
|
|
{
|
|
return (short)SQLite3.ColumnInt(stmt, index);
|
|
}
|
|
else if (clrType == typeof(sbyte))
|
|
{
|
|
return (sbyte)SQLite3.ColumnInt(stmt, index);
|
|
}
|
|
else if (clrType == typeof(byte[]))
|
|
{
|
|
return SQLite3.ColumnByteArray(stmt, index);
|
|
}
|
|
else if (clrType == typeof(Guid))
|
|
{
|
|
var text = SQLite3.ColumnString(stmt, index);
|
|
return new Guid(text);
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Don't know how to read " + clrType);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Since the insert never changed, we only need to prepare once.
|
|
/// </summary>
|
|
public class PreparedSqlLiteInsertCommand : IDisposable
|
|
{
|
|
public bool Initialized { get; set; }
|
|
|
|
protected SQLiteConnection Connection { get; set; }
|
|
|
|
public string CommandText { get; set; }
|
|
|
|
protected Sqlite3Statement Statement { get; set; }
|
|
internal static readonly Sqlite3Statement NullStatement = default(Sqlite3Statement);
|
|
|
|
internal PreparedSqlLiteInsertCommand(SQLiteConnection conn)
|
|
{
|
|
Connection = conn;
|
|
}
|
|
|
|
public int ExecuteNonQuery(object[] source)
|
|
{
|
|
if (Connection.Trace)
|
|
{
|
|
Debug.WriteLine("Executing: " + CommandText);
|
|
}
|
|
|
|
var r = SQLite3.Result.OK;
|
|
|
|
if (!Initialized)
|
|
{
|
|
Statement = Prepare();
|
|
Initialized = true;
|
|
}
|
|
|
|
//bind the values.
|
|
if (source != null)
|
|
{
|
|
for (int i = 0; i < source.Length; i++)
|
|
{
|
|
SQLiteCommand.BindParameter(Statement, i + 1, source[i], Connection.StoreDateTimeAsTicks);
|
|
}
|
|
}
|
|
r = SQLite3.Step(Statement);
|
|
|
|
if (r == SQLite3.Result.Done)
|
|
{
|
|
int rowsAffected = SQLite3.Changes(Connection.Handle);
|
|
SQLite3.Reset(Statement);
|
|
return rowsAffected;
|
|
}
|
|
else if (r == SQLite3.Result.Error)
|
|
{
|
|
string msg = SQLite3.GetErrmsg(Connection.Handle);
|
|
SQLite3.Reset(Statement);
|
|
throw SQLiteException.New(r, msg);
|
|
}
|
|
else if (r == SQLite3.Result.Constraint && SQLite3.ExtendedErrCode(Connection.Handle) == SQLite3.ExtendedResult.ConstraintNotNull)
|
|
{
|
|
SQLite3.Reset(Statement);
|
|
throw NotNullConstraintViolationException.New(r, SQLite3.GetErrmsg(Connection.Handle));
|
|
}
|
|
else
|
|
{
|
|
SQLite3.Reset(Statement);
|
|
throw SQLiteException.New(r, r.ToString());
|
|
}
|
|
}
|
|
|
|
protected virtual Sqlite3Statement Prepare()
|
|
{
|
|
var stmt = SQLite3.Prepare2(Connection.Handle, CommandText);
|
|
return stmt;
|
|
}
|
|
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
GC.SuppressFinalize(this);
|
|
}
|
|
|
|
private void Dispose(bool disposing)
|
|
{
|
|
if (Statement != NullStatement)
|
|
{
|
|
try
|
|
{
|
|
SQLite3.Finalize(Statement);
|
|
}
|
|
finally
|
|
{
|
|
Statement = NullStatement;
|
|
Connection = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
~PreparedSqlLiteInsertCommand()
|
|
{
|
|
Dispose(false);
|
|
}
|
|
}
|
|
|
|
public abstract class BaseTableQuery
|
|
{
|
|
protected class Ordering
|
|
{
|
|
public string ColumnName { get; set; }
|
|
public bool Ascending { get; set; }
|
|
}
|
|
}
|
|
|
|
public class TableQuery<T> : BaseTableQuery, IEnumerable<T>
|
|
{
|
|
public SQLiteConnection Connection { get; private set; }
|
|
|
|
public TableMapping Table { get; private set; }
|
|
|
|
Expression _where;
|
|
List<Ordering> _orderBys;
|
|
int? _limit;
|
|
int? _offset;
|
|
|
|
BaseTableQuery _joinInner;
|
|
Expression _joinInnerKeySelector;
|
|
BaseTableQuery _joinOuter;
|
|
Expression _joinOuterKeySelector;
|
|
Expression _joinSelector;
|
|
|
|
Expression _selector;
|
|
|
|
TableQuery(SQLiteConnection conn, TableMapping table)
|
|
{
|
|
Connection = conn;
|
|
Table = table;
|
|
}
|
|
|
|
public TableQuery(SQLiteConnection conn)
|
|
{
|
|
Connection = conn;
|
|
Table = Connection.GetMapping(typeof(T));
|
|
}
|
|
|
|
public TableQuery<U> Clone<U>()
|
|
{
|
|
var q = new TableQuery<U>(Connection, Table);
|
|
q._where = _where;
|
|
q._deferred = _deferred;
|
|
if (_orderBys != null)
|
|
{
|
|
q._orderBys = new List<Ordering>(_orderBys);
|
|
}
|
|
q._limit = _limit;
|
|
q._offset = _offset;
|
|
q._joinInner = _joinInner;
|
|
q._joinInnerKeySelector = _joinInnerKeySelector;
|
|
q._joinOuter = _joinOuter;
|
|
q._joinOuterKeySelector = _joinOuterKeySelector;
|
|
q._joinSelector = _joinSelector;
|
|
q._selector = _selector;
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<T> Where(Expression<Func<T, bool>> predExpr)
|
|
{
|
|
if (predExpr.NodeType == ExpressionType.Lambda)
|
|
{
|
|
var lambda = (LambdaExpression)predExpr;
|
|
var pred = lambda.Body;
|
|
var q = Clone<T>();
|
|
q.AddWhere(pred);
|
|
return q;
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Must be a predicate");
|
|
}
|
|
}
|
|
|
|
public TableQuery<T> Take(int n)
|
|
{
|
|
var q = Clone<T>();
|
|
q._limit = n;
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<T> Skip(int n)
|
|
{
|
|
var q = Clone<T>();
|
|
q._offset = n;
|
|
return q;
|
|
}
|
|
|
|
public T ElementAt(int index)
|
|
{
|
|
return Skip(index).Take(1).First();
|
|
}
|
|
|
|
bool _deferred;
|
|
public TableQuery<T> Deferred()
|
|
{
|
|
var q = Clone<T>();
|
|
q._deferred = true;
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<T> OrderBy<U>(Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U>(orderExpr, true);
|
|
}
|
|
|
|
public TableQuery<T> OrderByDescending<U>(Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U>(orderExpr, false);
|
|
}
|
|
|
|
public TableQuery<T> ThenBy<U>(Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U>(orderExpr, true);
|
|
}
|
|
|
|
public TableQuery<T> ThenByDescending<U>(Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U>(orderExpr, false);
|
|
}
|
|
|
|
private TableQuery<T> AddOrderBy<U>(Expression<Func<T, U>> orderExpr, bool asc)
|
|
{
|
|
if (orderExpr.NodeType == ExpressionType.Lambda)
|
|
{
|
|
var lambda = (LambdaExpression)orderExpr;
|
|
|
|
MemberExpression mem = null;
|
|
|
|
var unary = lambda.Body as UnaryExpression;
|
|
if (unary != null && unary.NodeType == ExpressionType.Convert)
|
|
{
|
|
mem = unary.Operand as MemberExpression;
|
|
}
|
|
else
|
|
{
|
|
mem = lambda.Body as MemberExpression;
|
|
}
|
|
|
|
if (mem != null && (mem.Expression.NodeType == ExpressionType.Parameter))
|
|
{
|
|
var q = Clone<T>();
|
|
if (q._orderBys == null)
|
|
{
|
|
q._orderBys = new List<Ordering>();
|
|
}
|
|
q._orderBys.Add(new Ordering
|
|
{
|
|
ColumnName = Table.FindColumnWithPropertyName(mem.Member.Name).Name,
|
|
Ascending = asc
|
|
});
|
|
return q;
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Order By does not support: " + orderExpr);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Must be a predicate");
|
|
}
|
|
}
|
|
|
|
private void AddWhere(Expression pred)
|
|
{
|
|
if (_where == null)
|
|
{
|
|
_where = pred;
|
|
}
|
|
else
|
|
{
|
|
_where = Expression.AndAlso(_where, pred);
|
|
}
|
|
}
|
|
|
|
public TableQuery<TResult> Join<TInner, TKey, TResult>(
|
|
TableQuery<TInner> inner,
|
|
Expression<Func<T, TKey>> outerKeySelector,
|
|
Expression<Func<TInner, TKey>> innerKeySelector,
|
|
Expression<Func<T, TInner, TResult>> resultSelector)
|
|
{
|
|
var q = new TableQuery<TResult>(Connection, Connection.GetMapping(typeof(TResult)))
|
|
{
|
|
_joinOuter = this,
|
|
_joinOuterKeySelector = outerKeySelector,
|
|
_joinInner = inner,
|
|
_joinInnerKeySelector = innerKeySelector,
|
|
_joinSelector = resultSelector,
|
|
};
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<TResult> Select<TResult>(Expression<Func<T, TResult>> selector)
|
|
{
|
|
var q = Clone<TResult>();
|
|
q._selector = selector;
|
|
return q;
|
|
}
|
|
|
|
private SQLiteCommand GenerateCommand(string selectionList)
|
|
{
|
|
if (_joinInner != null && _joinOuter != null)
|
|
{
|
|
throw new NotSupportedException("Joins are not supported.");
|
|
}
|
|
else
|
|
{
|
|
var cmdText = "select " + selectionList + " from \"" + Table.TableName + "\"";
|
|
var args = new List<object>();
|
|
if (_where != null)
|
|
{
|
|
var w = CompileExpr(_where, args);
|
|
cmdText += " where " + w.CommandText;
|
|
}
|
|
if ((_orderBys != null) && (_orderBys.Count > 0))
|
|
{
|
|
var t = string.Join(", ", _orderBys.Select(o => "\"" + o.ColumnName + "\"" + (o.Ascending ? "" : " desc")).ToArray());
|
|
cmdText += " order by " + t;
|
|
}
|
|
if (_limit.HasValue)
|
|
{
|
|
cmdText += " limit " + _limit.Value;
|
|
}
|
|
if (_offset.HasValue)
|
|
{
|
|
if (!_limit.HasValue)
|
|
{
|
|
cmdText += " limit -1 ";
|
|
}
|
|
cmdText += " offset " + _offset.Value;
|
|
}
|
|
return Connection.CreateCommand(cmdText, args.ToArray());
|
|
}
|
|
}
|
|
|
|
class CompileResult
|
|
{
|
|
public string CommandText { get; set; }
|
|
|
|
public object Value { get; set; }
|
|
}
|
|
|
|
private CompileResult CompileExpr(Expression expr, List<object> queryArgs)
|
|
{
|
|
if (expr == null)
|
|
{
|
|
throw new NotSupportedException("Expression is NULL");
|
|
}
|
|
else if (expr is BinaryExpression)
|
|
{
|
|
var bin = (BinaryExpression)expr;
|
|
|
|
var leftr = CompileExpr(bin.Left, queryArgs);
|
|
var rightr = CompileExpr(bin.Right, queryArgs);
|
|
|
|
//If either side is a parameter and is null, then handle the other side specially (for "is null"/"is not null")
|
|
string text;
|
|
if (leftr.CommandText == "?" && leftr.Value == null)
|
|
text = CompileNullBinaryExpression(bin, rightr);
|
|
else if (rightr.CommandText == "?" && rightr.Value == null)
|
|
text = CompileNullBinaryExpression(bin, leftr);
|
|
else
|
|
text = "(" + leftr.CommandText + " " + GetSqlName(bin) + " " + rightr.CommandText + ")";
|
|
return new CompileResult { CommandText = text };
|
|
}
|
|
else if (expr.NodeType == ExpressionType.Call)
|
|
{
|
|
|
|
var call = (MethodCallExpression)expr;
|
|
var args = new CompileResult[call.Arguments.Count];
|
|
var obj = call.Object != null ? CompileExpr(call.Object, queryArgs) : null;
|
|
|
|
for (var i = 0; i < args.Length; i++)
|
|
{
|
|
args[i] = CompileExpr(call.Arguments[i], queryArgs);
|
|
}
|
|
|
|
var sqlCall = "";
|
|
|
|
if (call.Method.Name == "Like" && args.Length == 2)
|
|
{
|
|
sqlCall = "(" + args[0].CommandText + " like " + args[1].CommandText + ")";
|
|
}
|
|
else if (call.Method.Name == "Contains" && args.Length == 2)
|
|
{
|
|
sqlCall = "(" + args[1].CommandText + " in " + args[0].CommandText + ")";
|
|
}
|
|
else if (call.Method.Name == "Contains" && args.Length == 1)
|
|
{
|
|
if (call.Object != null && call.Object.Type == typeof(string))
|
|
{
|
|
sqlCall = "(" + obj.CommandText + " like ('%' || " + args[0].CommandText + " || '%'))";
|
|
}
|
|
else
|
|
{
|
|
sqlCall = "(" + args[0].CommandText + " in " + obj.CommandText + ")";
|
|
}
|
|
}
|
|
else if (call.Method.Name == "StartsWith" && args.Length == 1)
|
|
{
|
|
sqlCall = "(" + obj.CommandText + " like (" + args[0].CommandText + " || '%'))";
|
|
}
|
|
else if (call.Method.Name == "EndsWith" && args.Length == 1)
|
|
{
|
|
sqlCall = "(" + obj.CommandText + " like ('%' || " + args[0].CommandText + "))";
|
|
}
|
|
else if (call.Method.Name == "Equals" && args.Length == 1)
|
|
{
|
|
sqlCall = "(" + obj.CommandText + " = (" + args[0].CommandText + "))";
|
|
}
|
|
else if (call.Method.Name == "ToLower")
|
|
{
|
|
sqlCall = "(lower(" + obj.CommandText + "))";
|
|
}
|
|
else if (call.Method.Name == "ToUpper")
|
|
{
|
|
sqlCall = "(upper(" + obj.CommandText + "))";
|
|
}
|
|
else
|
|
{
|
|
sqlCall = call.Method.Name.ToLower() + "(" + string.Join(",", args.Select(a => a.CommandText).ToArray()) + ")";
|
|
}
|
|
return new CompileResult { CommandText = sqlCall };
|
|
|
|
}
|
|
else if (expr.NodeType == ExpressionType.Constant)
|
|
{
|
|
var c = (ConstantExpression)expr;
|
|
queryArgs.Add(c.Value);
|
|
return new CompileResult
|
|
{
|
|
CommandText = "?",
|
|
Value = c.Value
|
|
};
|
|
}
|
|
else if (expr.NodeType == ExpressionType.Convert)
|
|
{
|
|
var u = (UnaryExpression)expr;
|
|
var ty = u.Type;
|
|
var valr = CompileExpr(u.Operand, queryArgs);
|
|
return new CompileResult
|
|
{
|
|
CommandText = valr.CommandText,
|
|
Value = valr.Value != null ? ConvertTo(valr.Value, ty) : null
|
|
};
|
|
}
|
|
else if (expr.NodeType == ExpressionType.MemberAccess)
|
|
{
|
|
var mem = (MemberExpression)expr;
|
|
|
|
if (mem.Expression != null && mem.Expression.NodeType == ExpressionType.Parameter)
|
|
{
|
|
//
|
|
// This is a column of our table, output just the column name
|
|
// Need to translate it if that column name is mapped
|
|
//
|
|
var columnName = Table.FindColumnWithPropertyName(mem.Member.Name).Name;
|
|
return new CompileResult { CommandText = "\"" + columnName + "\"" };
|
|
}
|
|
else
|
|
{
|
|
object obj = null;
|
|
if (mem.Expression != null)
|
|
{
|
|
var r = CompileExpr(mem.Expression, queryArgs);
|
|
if (r.Value == null)
|
|
{
|
|
throw new NotSupportedException("Member access failed to compile expression");
|
|
}
|
|
if (r.CommandText == "?")
|
|
{
|
|
queryArgs.RemoveAt(queryArgs.Count - 1);
|
|
}
|
|
obj = r.Value;
|
|
}
|
|
|
|
//
|
|
// Get the member value
|
|
//
|
|
object val = null;
|
|
|
|
#if !NETFX_CORE
|
|
if (mem.Member.MemberType == MemberTypes.Property)
|
|
{
|
|
#else
|
|
if (mem.Member is PropertyInfo) {
|
|
#endif
|
|
var m = (PropertyInfo)mem.Member;
|
|
val = m.GetValue(obj, null);
|
|
#if !NETFX_CORE
|
|
}
|
|
else if (mem.Member.MemberType == MemberTypes.Field)
|
|
{
|
|
#else
|
|
} else if (mem.Member is FieldInfo) {
|
|
#endif
|
|
#if SILVERLIGHT
|
|
val = Expression.Lambda (expr).Compile ().DynamicInvoke ();
|
|
#else
|
|
var m = (FieldInfo)mem.Member;
|
|
val = m.GetValue(obj);
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#if !NETFX_CORE
|
|
throw new NotSupportedException("MemberExpr: " + mem.Member.MemberType);
|
|
#else
|
|
throw new NotSupportedException ("MemberExpr: " + mem.Member.DeclaringType);
|
|
#endif
|
|
}
|
|
|
|
//
|
|
// Work special magic for enumerables
|
|
//
|
|
if (val != null && val is System.Collections.IEnumerable && !(val is string) && !(val is System.Collections.Generic.IEnumerable<byte>))
|
|
{
|
|
var sb = new System.Text.StringBuilder();
|
|
sb.Append("(");
|
|
var head = "";
|
|
foreach (var a in (System.Collections.IEnumerable)val)
|
|
{
|
|
queryArgs.Add(a);
|
|
sb.Append(head);
|
|
sb.Append("?");
|
|
head = ",";
|
|
}
|
|
sb.Append(")");
|
|
return new CompileResult
|
|
{
|
|
CommandText = sb.ToString(),
|
|
Value = val
|
|
};
|
|
}
|
|
else
|
|
{
|
|
queryArgs.Add(val);
|
|
return new CompileResult
|
|
{
|
|
CommandText = "?",
|
|
Value = val
|
|
};
|
|
}
|
|
}
|
|
}
|
|
throw new NotSupportedException("Cannot compile: " + expr.NodeType.ToString());
|
|
}
|
|
|
|
static object ConvertTo(object obj, Type t)
|
|
{
|
|
Type nut = Nullable.GetUnderlyingType(t);
|
|
|
|
if (nut != null)
|
|
{
|
|
if (obj == null) return null;
|
|
return Convert.ChangeType(obj, nut);
|
|
}
|
|
else
|
|
{
|
|
return Convert.ChangeType(obj, t);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Compiles a BinaryExpression where one of the parameters is null.
|
|
/// </summary>
|
|
/// <param name="parameter">The non-null parameter</param>
|
|
private string CompileNullBinaryExpression(BinaryExpression expression, CompileResult parameter)
|
|
{
|
|
if (expression.NodeType == ExpressionType.Equal)
|
|
return "(" + parameter.CommandText + " is ?)";
|
|
else if (expression.NodeType == ExpressionType.NotEqual)
|
|
return "(" + parameter.CommandText + " is not ?)";
|
|
else
|
|
throw new NotSupportedException("Cannot compile Null-BinaryExpression with type " + expression.NodeType.ToString());
|
|
}
|
|
|
|
string GetSqlName(Expression expr)
|
|
{
|
|
var n = expr.NodeType;
|
|
if (n == ExpressionType.GreaterThan)
|
|
return ">";
|
|
else if (n == ExpressionType.GreaterThanOrEqual)
|
|
{
|
|
return ">=";
|
|
}
|
|
else if (n == ExpressionType.LessThan)
|
|
{
|
|
return "<";
|
|
}
|
|
else if (n == ExpressionType.LessThanOrEqual)
|
|
{
|
|
return "<=";
|
|
}
|
|
else if (n == ExpressionType.And)
|
|
{
|
|
return "&";
|
|
}
|
|
else if (n == ExpressionType.AndAlso)
|
|
{
|
|
return "and";
|
|
}
|
|
else if (n == ExpressionType.Or)
|
|
{
|
|
return "|";
|
|
}
|
|
else if (n == ExpressionType.OrElse)
|
|
{
|
|
return "or";
|
|
}
|
|
else if (n == ExpressionType.Equal)
|
|
{
|
|
return "=";
|
|
}
|
|
else if (n == ExpressionType.NotEqual)
|
|
{
|
|
return "!=";
|
|
}
|
|
else
|
|
{
|
|
throw new NotSupportedException("Cannot get SQL for: " + n);
|
|
}
|
|
}
|
|
|
|
public int Count()
|
|
{
|
|
return GenerateCommand("count(*)").ExecuteScalar<int>();
|
|
}
|
|
|
|
public int Count(Expression<Func<T, bool>> predExpr)
|
|
{
|
|
return Where(predExpr).Count();
|
|
}
|
|
|
|
public IEnumerator<T> GetEnumerator()
|
|
{
|
|
if (!_deferred)
|
|
return GenerateCommand("*").ExecuteQuery<T>().GetEnumerator();
|
|
|
|
return GenerateCommand("*").ExecuteDeferredQuery<T>().GetEnumerator();
|
|
}
|
|
|
|
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
|
|
{
|
|
return GetEnumerator();
|
|
}
|
|
|
|
public T First()
|
|
{
|
|
var query = Take(1);
|
|
return query.ToList<T>().First();
|
|
}
|
|
|
|
public T FirstOrDefault()
|
|
{
|
|
var query = Take(1);
|
|
return query.ToList<T>().FirstOrDefault();
|
|
}
|
|
}
|
|
|
|
public static class SQLite3
|
|
{
|
|
public enum Result : int
|
|
{
|
|
OK = 0,
|
|
Error = 1,
|
|
Internal = 2,
|
|
Perm = 3,
|
|
Abort = 4,
|
|
Busy = 5,
|
|
Locked = 6,
|
|
NoMem = 7,
|
|
ReadOnly = 8,
|
|
Interrupt = 9,
|
|
IOError = 10,
|
|
Corrupt = 11,
|
|
NotFound = 12,
|
|
Full = 13,
|
|
CannotOpen = 14,
|
|
LockErr = 15,
|
|
Empty = 16,
|
|
SchemaChngd = 17,
|
|
TooBig = 18,
|
|
Constraint = 19,
|
|
Mismatch = 20,
|
|
Misuse = 21,
|
|
NotImplementedLFS = 22,
|
|
AccessDenied = 23,
|
|
Format = 24,
|
|
Range = 25,
|
|
NonDBFile = 26,
|
|
Notice = 27,
|
|
Warning = 28,
|
|
Row = 100,
|
|
Done = 101
|
|
}
|
|
|
|
public enum ExtendedResult : int
|
|
{
|
|
IOErrorRead = (Result.IOError | (1 << 8)),
|
|
IOErrorShortRead = (Result.IOError | (2 << 8)),
|
|
IOErrorWrite = (Result.IOError | (3 << 8)),
|
|
IOErrorFsync = (Result.IOError | (4 << 8)),
|
|
IOErrorDirFSync = (Result.IOError | (5 << 8)),
|
|
IOErrorTruncate = (Result.IOError | (6 << 8)),
|
|
IOErrorFStat = (Result.IOError | (7 << 8)),
|
|
IOErrorUnlock = (Result.IOError | (8 << 8)),
|
|
IOErrorRdlock = (Result.IOError | (9 << 8)),
|
|
IOErrorDelete = (Result.IOError | (10 << 8)),
|
|
IOErrorBlocked = (Result.IOError | (11 << 8)),
|
|
IOErrorNoMem = (Result.IOError | (12 << 8)),
|
|
IOErrorAccess = (Result.IOError | (13 << 8)),
|
|
IOErrorCheckReservedLock = (Result.IOError | (14 << 8)),
|
|
IOErrorLock = (Result.IOError | (15 << 8)),
|
|
IOErrorClose = (Result.IOError | (16 << 8)),
|
|
IOErrorDirClose = (Result.IOError | (17 << 8)),
|
|
IOErrorSHMOpen = (Result.IOError | (18 << 8)),
|
|
IOErrorSHMSize = (Result.IOError | (19 << 8)),
|
|
IOErrorSHMLock = (Result.IOError | (20 << 8)),
|
|
IOErrorSHMMap = (Result.IOError | (21 << 8)),
|
|
IOErrorSeek = (Result.IOError | (22 << 8)),
|
|
IOErrorDeleteNoEnt = (Result.IOError | (23 << 8)),
|
|
IOErrorMMap = (Result.IOError | (24 << 8)),
|
|
LockedSharedcache = (Result.Locked | (1 << 8)),
|
|
BusyRecovery = (Result.Busy | (1 << 8)),
|
|
CannottOpenNoTempDir = (Result.CannotOpen | (1 << 8)),
|
|
CannotOpenIsDir = (Result.CannotOpen | (2 << 8)),
|
|
CannotOpenFullPath = (Result.CannotOpen | (3 << 8)),
|
|
CorruptVTab = (Result.Corrupt | (1 << 8)),
|
|
ReadonlyRecovery = (Result.ReadOnly | (1 << 8)),
|
|
ReadonlyCannotLock = (Result.ReadOnly | (2 << 8)),
|
|
ReadonlyRollback = (Result.ReadOnly | (3 << 8)),
|
|
AbortRollback = (Result.Abort | (2 << 8)),
|
|
ConstraintCheck = (Result.Constraint | (1 << 8)),
|
|
ConstraintCommitHook = (Result.Constraint | (2 << 8)),
|
|
ConstraintForeignKey = (Result.Constraint | (3 << 8)),
|
|
ConstraintFunction = (Result.Constraint | (4 << 8)),
|
|
ConstraintNotNull = (Result.Constraint | (5 << 8)),
|
|
ConstraintPrimaryKey = (Result.Constraint | (6 << 8)),
|
|
ConstraintTrigger = (Result.Constraint | (7 << 8)),
|
|
ConstraintUnique = (Result.Constraint | (8 << 8)),
|
|
ConstraintVTab = (Result.Constraint | (9 << 8)),
|
|
NoticeRecoverWAL = (Result.Notice | (1 << 8)),
|
|
NoticeRecoverRollback = (Result.Notice | (2 << 8))
|
|
}
|
|
|
|
|
|
public enum ConfigOption : int
|
|
{
|
|
SingleThread = 1,
|
|
MultiThread = 2,
|
|
Serialized = 3
|
|
}
|
|
|
|
#if !USE_CSHARP_SQLITE && !USE_WP8_NATIVE_SQLITE
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Open([MarshalAs(UnmanagedType.LPStr)] string filename, out IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open_v2", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Open([MarshalAs(UnmanagedType.LPStr)] string filename, out IntPtr db, int flags, IntPtr zvfs);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open_v2", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Open(byte[] filename, out IntPtr db, int flags, IntPtr zvfs);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open16", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Open16([MarshalAs(UnmanagedType.LPWStr)] string filename, out IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_enable_load_extension", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result EnableLoadExtension(IntPtr db, int onoff);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_close", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Close(IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_initialize", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Initialize();
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_shutdown", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Shutdown();
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_config", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Config(ConfigOption option);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_win32_set_directory", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
|
|
public static extern int SetDirectory(uint directoryType, string directoryPath);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_busy_timeout", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result BusyTimeout(IntPtr db, int milliseconds);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_changes", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int Changes(IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_prepare_v2", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Prepare2(IntPtr db, [MarshalAs(UnmanagedType.LPStr)] string sql, int numBytes, out IntPtr stmt, IntPtr pzTail);
|
|
|
|
#if NETFX_CORE
|
|
[DllImport ("sqlite3", EntryPoint = "sqlite3_prepare_v2", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Prepare2 (IntPtr db, byte[] queryBytes, int numBytes, out IntPtr stmt, IntPtr pzTail);
|
|
#endif
|
|
|
|
public static IntPtr Prepare2(IntPtr db, string query)
|
|
{
|
|
IntPtr stmt;
|
|
#if NETFX_CORE
|
|
byte[] queryBytes = System.Text.UTF8Encoding.UTF8.GetBytes (query);
|
|
var r = Prepare2 (db, queryBytes, queryBytes.Length, out stmt, IntPtr.Zero);
|
|
#else
|
|
var r = Prepare2(db, query, System.Text.UTF8Encoding.UTF8.GetByteCount(query), out stmt, IntPtr.Zero);
|
|
#endif
|
|
if (r != Result.OK)
|
|
{
|
|
throw SQLiteException.New(r, GetErrmsg(db));
|
|
}
|
|
return stmt;
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_step", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Step(IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_reset", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Reset(IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_finalize", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Finalize(IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_last_insert_rowid", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern long LastInsertRowid(IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_errmsg16", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern IntPtr Errmsg(IntPtr db);
|
|
|
|
public static string GetErrmsg(IntPtr db)
|
|
{
|
|
return Marshal.PtrToStringUni(Errmsg(db));
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_parameter_index", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int BindParameterIndex(IntPtr stmt, [MarshalAs(UnmanagedType.LPStr)] string name);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_null", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int BindNull(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_int", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int BindInt(IntPtr stmt, int index, int val);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_int64", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int BindInt64(IntPtr stmt, int index, long val);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_double", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int BindDouble(IntPtr stmt, int index, double val);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_text16", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
|
|
public static extern int BindText(IntPtr stmt, int index, [MarshalAs(UnmanagedType.LPWStr)] string val, int n, IntPtr free);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_blob", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int BindBlob(IntPtr stmt, int index, byte[] val, int n, IntPtr free);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_count", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int ColumnCount(IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_name", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnName(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_name16", CallingConvention = CallingConvention.Cdecl)]
|
|
static extern IntPtr ColumnName16Internal(IntPtr stmt, int index);
|
|
public static string ColumnName16(IntPtr stmt, int index)
|
|
{
|
|
return Marshal.PtrToStringUni(ColumnName16Internal(stmt, index));
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_type", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern ColType ColumnType(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_int", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int ColumnInt(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_int64", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern long ColumnInt64(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_double", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern double ColumnDouble(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_text", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnText(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_text16", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnText16(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_blob", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnBlob(IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_bytes", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int ColumnBytes(IntPtr stmt, int index);
|
|
|
|
public static string ColumnString(IntPtr stmt, int index)
|
|
{
|
|
return Marshal.PtrToStringUni(SQLite3.ColumnText16(stmt, index));
|
|
}
|
|
|
|
public static byte[] ColumnByteArray(IntPtr stmt, int index)
|
|
{
|
|
int length = ColumnBytes(stmt, index);
|
|
var result = new byte[length];
|
|
if (length > 0)
|
|
Marshal.Copy(ColumnBlob(stmt, index), result, 0, length);
|
|
return result;
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_extended_errcode", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern ExtendedResult ExtendedErrCode(IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_libversion_number", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int LibVersionNumber();
|
|
#else
|
|
public static Result Open(string filename, out Sqlite3DatabaseHandle db)
|
|
{
|
|
return (Result) Sqlite3.sqlite3_open(filename, out db);
|
|
}
|
|
|
|
public static Result Open(string filename, out Sqlite3DatabaseHandle db, int flags, IntPtr zVfs)
|
|
{
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
return (Result)Sqlite3.sqlite3_open_v2(filename, out db, flags, "");
|
|
#else
|
|
return (Result)Sqlite3.sqlite3_open_v2(filename, out db, flags, null);
|
|
#endif
|
|
}
|
|
|
|
public static Result Close(Sqlite3DatabaseHandle db)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_close(db);
|
|
}
|
|
|
|
public static Result BusyTimeout(Sqlite3DatabaseHandle db, int milliseconds)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_busy_timeout(db, milliseconds);
|
|
}
|
|
|
|
public static int Changes(Sqlite3DatabaseHandle db)
|
|
{
|
|
return Sqlite3.sqlite3_changes(db);
|
|
}
|
|
|
|
public static Sqlite3Statement Prepare2(Sqlite3DatabaseHandle db, string query)
|
|
{
|
|
Sqlite3Statement stmt = default(Sqlite3Statement);
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
var r = Sqlite3.sqlite3_prepare_v2(db, query, out stmt);
|
|
#else
|
|
stmt = new Sqlite3Statement();
|
|
var r = Sqlite3.sqlite3_prepare_v2(db, query, -1, ref stmt, 0);
|
|
#endif
|
|
if (r != 0)
|
|
{
|
|
throw SQLiteException.New((Result)r, GetErrmsg(db));
|
|
}
|
|
return stmt;
|
|
}
|
|
|
|
public static Result Step(Sqlite3Statement stmt)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_step(stmt);
|
|
}
|
|
|
|
public static Result Reset(Sqlite3Statement stmt)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_reset(stmt);
|
|
}
|
|
|
|
public static Result Finalize(Sqlite3Statement stmt)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_finalize(stmt);
|
|
}
|
|
|
|
public static long LastInsertRowid(Sqlite3DatabaseHandle db)
|
|
{
|
|
return Sqlite3.sqlite3_last_insert_rowid(db);
|
|
}
|
|
|
|
public static string GetErrmsg(Sqlite3DatabaseHandle db)
|
|
{
|
|
return Sqlite3.sqlite3_errmsg(db);
|
|
}
|
|
|
|
public static int BindParameterIndex(Sqlite3Statement stmt, string name)
|
|
{
|
|
return Sqlite3.sqlite3_bind_parameter_index(stmt, name);
|
|
}
|
|
|
|
public static int BindNull(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_bind_null(stmt, index);
|
|
}
|
|
|
|
public static int BindInt(Sqlite3Statement stmt, int index, int val)
|
|
{
|
|
return Sqlite3.sqlite3_bind_int(stmt, index, val);
|
|
}
|
|
|
|
public static int BindInt64(Sqlite3Statement stmt, int index, long val)
|
|
{
|
|
return Sqlite3.sqlite3_bind_int64(stmt, index, val);
|
|
}
|
|
|
|
public static int BindDouble(Sqlite3Statement stmt, int index, double val)
|
|
{
|
|
return Sqlite3.sqlite3_bind_double(stmt, index, val);
|
|
}
|
|
|
|
public static int BindText(Sqlite3Statement stmt, int index, string val, int n, IntPtr free)
|
|
{
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
return Sqlite3.sqlite3_bind_text(stmt, index, val, n);
|
|
#else
|
|
return Sqlite3.sqlite3_bind_text(stmt, index, val, n, null);
|
|
#endif
|
|
}
|
|
|
|
public static int BindBlob(Sqlite3Statement stmt, int index, byte[] val, int n, IntPtr free)
|
|
{
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
return Sqlite3.sqlite3_bind_blob(stmt, index, val, n);
|
|
#else
|
|
return Sqlite3.sqlite3_bind_blob(stmt, index, val, n, null);
|
|
#endif
|
|
}
|
|
|
|
public static int ColumnCount(Sqlite3Statement stmt)
|
|
{
|
|
return Sqlite3.sqlite3_column_count(stmt);
|
|
}
|
|
|
|
public static string ColumnName(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_name(stmt, index);
|
|
}
|
|
|
|
public static string ColumnName16(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_name(stmt, index);
|
|
}
|
|
|
|
public static ColType ColumnType(Sqlite3Statement stmt, int index)
|
|
{
|
|
return (ColType)Sqlite3.sqlite3_column_type(stmt, index);
|
|
}
|
|
|
|
public static int ColumnInt(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_int(stmt, index);
|
|
}
|
|
|
|
public static long ColumnInt64(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_int64(stmt, index);
|
|
}
|
|
|
|
public static double ColumnDouble(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_double(stmt, index);
|
|
}
|
|
|
|
public static string ColumnText(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_text(stmt, index);
|
|
}
|
|
|
|
public static string ColumnText16(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_text(stmt, index);
|
|
}
|
|
|
|
public static byte[] ColumnBlob(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_blob(stmt, index);
|
|
}
|
|
|
|
public static int ColumnBytes(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_bytes(stmt, index);
|
|
}
|
|
|
|
public static string ColumnString(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_text(stmt, index);
|
|
}
|
|
|
|
public static byte[] ColumnByteArray(Sqlite3Statement stmt, int index)
|
|
{
|
|
return ColumnBlob(stmt, index);
|
|
}
|
|
|
|
public static Result EnableLoadExtension(Sqlite3DatabaseHandle db, int onoff)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_enable_load_extension(db, onoff);
|
|
}
|
|
|
|
public static ExtendedResult ExtendedErrCode(Sqlite3DatabaseHandle db)
|
|
{
|
|
return (ExtendedResult)Sqlite3.sqlite3_extended_errcode(db);
|
|
}
|
|
#endif
|
|
|
|
public enum ColType : int
|
|
{
|
|
Integer = 1,
|
|
Float = 2,
|
|
Text = 3,
|
|
Blob = 4,
|
|
Null = 5
|
|
}
|
|
}
|
|
}
|
|
|