System.Data.SQLite

Artifact 969145f3f803e4b3ffbe569dbc54f0522ccd6acd:

• File System.Data.SQLite/SQLiteFactory.cs — part of check-in [5759e099be] at 2012-09-20 11:53:22 on branch trunk — Allow opened connections to skip adding the extension functions included in the interop assembly. Support loading of SQLite extensions. Add more notifications that use the new static Changed event. Miscellaneous comment cleanup. Cleanup usage of compile-time options for the .NET Framework version. Fix argument checking for the batch file tools. (user: mistachkin size: 4975)

/********************************************************
 * ADO.NET 2.0 Data Provider for SQLite Version 3.X
 * Written by Robert Simpson (robert@blackcastlesoft.com)
 * 
 * Released to the public domain, use at your own risk!
 ********************************************************/

namespace System.Data.SQLite
{
  using System;
  using System.Data.Common;

#if !PLATFORM_COMPACTFRAMEWORK
  /// <summary>
  /// SQLite implementation of <see cref="DbProviderFactory" />.
  /// </summary>
  public sealed partial class SQLiteFactory : DbProviderFactory, IDisposable
  {
    /// <summary>
    /// Constructs a new instance.
    /// </summary>
    public SQLiteFactory()
    {
        //
        // NOTE: Do nothing here now.  All the logging setup related code has
        //       been moved to the new SQLiteLog static class.
        //
    }

    ///////////////////////////////////////////////////////////////////////////////////////////////

    #region IDisposable Members
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////////////////////////

    #region IDisposable "Pattern" Members
    private bool disposed;
    private void CheckDisposed() /* throw */
    {
#if THROW_ON_DISPOSED
        if (disposed)
            throw new ObjectDisposedException(typeof(SQLiteFactory).Name);
#endif
    }

    ///////////////////////////////////////////////////////////////////////////////////////////////

    private void Dispose(bool disposing)
    {
        if (!disposed)
        {
            //if (disposing)
            //{
            //    ////////////////////////////////////
            //    // dispose managed resources here...
            //    ////////////////////////////////////
            //}

            //////////////////////////////////////
            // release unmanaged resources here...
            //////////////////////////////////////

            disposed = true;
        }
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////////////////////////

    #region Destructor
    ~SQLiteFactory()
    {
        Dispose(false);
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////////////////////////

    /// <summary>
    /// This event is raised whenever SQLite raises a logging event.
    /// Note that this should be set as one of the first things in the
    /// application.  This event is provided for backward compatibility only.
    /// New code should use the <see cref="SQLiteLog" /> class instead.
    /// </summary>
    public event SQLiteLogEventHandler Log
    {
      add { CheckDisposed(); SQLiteLog.Log += value; }
      remove { CheckDisposed(); SQLiteLog.Log -= value; }
    }

    /// <summary>
    /// Static instance member which returns an instanced <see cref="SQLiteFactory" /> class.
    /// </summary>
    public static readonly SQLiteFactory Instance = new SQLiteFactory();

    /// <summary>
    /// Creates and returns a new <see cref="SQLiteCommand" /> object.
    /// </summary>
    /// <returns>The new object.</returns>
    public override DbCommand CreateCommand()
    {
      CheckDisposed();
      return new SQLiteCommand();
    }

    /// <summary>
    /// Creates and returns a new <see cref="SQLiteCommandBuilder" /> object.
    /// </summary>
    /// <returns>The new object.</returns>
    public override DbCommandBuilder CreateCommandBuilder()
    {
      CheckDisposed();
      return new SQLiteCommandBuilder();
    }

    /// <summary>
    /// Creates and returns a new <see cref="SQLiteConnection" /> object.
    /// </summary>
    /// <returns>The new object.</returns>
    public override DbConnection CreateConnection()
    {
      CheckDisposed();
      return new SQLiteConnection();
    }

    /// <summary>
    /// Creates and returns a new <see cref="SQLiteConnectionStringBuilder" /> object.
    /// </summary>
    /// <returns>The new object.</returns>
    public override DbConnectionStringBuilder CreateConnectionStringBuilder()
    {
      CheckDisposed();
      return new SQLiteConnectionStringBuilder();
    }

    /// <summary>
    /// Creates and returns a new <see cref="SQLiteDataAdapter" /> object.
    /// </summary>
    /// <returns>The new object.</returns>
    public override DbDataAdapter CreateDataAdapter()
    {
      CheckDisposed();
      return new SQLiteDataAdapter();
    }

    /// <summary>
    /// Creates and returns a new <see cref="SQLiteParameter" /> object.
    /// </summary>
    /// <returns>The new object.</returns>
    public override DbParameter CreateParameter()
    {
      CheckDisposed();
      return new SQLiteParameter();
    }
  }
#endif
}