System.Data.SQLite

          <td>If this environment variable is set [to anything], the native
          library pre-loading functionality will be disabled.  By default,
          the native library pre-loading will attempt to load the native
          SQLite library from architecture-specific (e.g. "x86", "amd64",
          "x64") or platform-specific (e.g. "Win32") directories that reside
          underneath the application base directory.</td>
        </tr>
        <tr valign="top">
          <td>No_SQLiteFunctions</td>
          <td>If this environment variable is set [to anything], the initial
          search for types in all loaded assemblies that are tagged with the
          SQLiteFunction attribute will be skipped.  Normally, this search is
          conducted only once per application domain by the static constructor
          of the SQLiteFunction class; however, these implementation details
          are subject to change.</td>
        </tr>
        <tr valign="top">
          <td>PreLoadSQLite_BaseDirectory</td>
          <td>If this environment variable is set [to anything], it will be
          used instead of the application base directory by the native
          library pre-loader.  This environment variable can be especially
          useful in ASP.NET and other hosted environments where direct control
          of the location of the managed assemblies is not under the control

    </div>
    <div id="mainSection">
    <div id="mainBody">
    <h1 class="heading">Version History</h1>
    <p><b>1.0.85.0 - March XX, 2013 <font color="red">(release scheduled)</font></b></p>
    <ul>
      <li>Updated to <a href="http://www.sqlite.org/src/info/trunk">SQLite 3.7.16</a>.</li>
      <li>Skip checking loaded assemblies for types tagged with the SQLiteFunction attribute when the No_SQLiteFunctions environment variable is set. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/e4c8121f7b">[e4c8121f7b]</a>.</li>
      <li>Add static Execute method to the SQLiteCommand class.</li>
      <li>Add public constructor to the SQLiteDataAdapter class that allows passing the parseViaFramework parameter to the SQLiteConnection constructor.</li>
      <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
    </ul>
    <p><b>1.0.84.0 - January 9, 2013</b></p>
    <ul>
      <li>Updated to <a href="http://www.sqlite.org/releaselog/3_7_15_2.html">SQLite 3.7.15.2</a>.</li>

/********************************************************
 * 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.Collections.Generic;
  using System.Runtime.InteropServices;
  using System.Globalization;

  /// <summary>
  /// This abstract class is designed to handle user-defined functions easily.  An instance of the derived class is made for each
  /// connection to the database.
  /// </summary>
  /// <remarks>
  /// Although there is one instance of a class derived from SQLiteFunction per database connection, the derived class has no access
  /// to the underlying connection.  This is necessary to deter implementers from thinking it would be a good idea to make database
  /// calls during processing.
  ///
  /// It is important to distinguish between a per-connection instance, and a per-SQL statement context.  One instance of this class
  /// services all SQL statements being stepped through on that connection, and there can be many.  One should never store per-statement
  /// information in member variables of user-defined function classes.
  ///
  /// For aggregate functions, always create and store your per-statement data in the contextData object on the 1st step.  This data will
  /// be automatically freed for you (and Dispose() called if the item supports IDisposable) when the statement completes.
  /// </remarks>
  public abstract class SQLiteFunction : IDisposable
  {
    private class AggregateData
    {

#endif
    static SQLiteFunction()
    {
      _registeredFunctions = new List<SQLiteFunctionAttribute>();
      try
      {
#if !PLATFORM_COMPACTFRAMEWORK
        //
        // NOTE: If the "No_SQLiteFunctions" environment variable is set,
        //       skip all our special code and simply return.
        //
        if (Environment.GetEnvironmentVariable("No_SQLiteFunctions") != null)
          return;

        SQLiteFunctionAttribute at;
        System.Reflection.Assembly[] arAssemblies = System.AppDomain.CurrentDomain.GetAssemblies();
        int w = arAssemblies.Length;
        System.Reflection.AssemblyName sqlite = System.Reflection.Assembly.GetCallingAssembly().GetName();

        for (int n = 0; n < w; n++)
        {

      /// Attempts to initialize this class by pre-loading the native SQLite
      /// library for the processor architecture of the current process.
      /// </summary>
      internal static void Initialize()
      {
#if !PLATFORM_COMPACTFRAMEWORK
          //
          // NOTE: If the "No_PreLoadSQLite" environment variable is set, skip
          //       all our special code and simply return.
          //
          if (Environment.GetEnvironmentVariable("No_PreLoadSQLite") != null)
              return;
#endif

          lock (staticSyncRoot)

<h2><b>Version History</b></h2>

<p>
    <b>1.0.85.0 - March XX, 2013 <font color="red">(release scheduled)</font></b>
</p>
<ul>
    <li>Updated to <a href="http://www.sqlite.org/src/info/trunk">SQLite 3.7.16</a>.</li>
    <li>Skip checking loaded assemblies for types tagged with the SQLiteFunction attribute when the No_SQLiteFunctions environment variable is set. Pursuant to [e4c8121f7b].</li>
    <li>Add static Execute method to the SQLiteCommand class.</li>
    <li>Add public constructor to the SQLiteDataAdapter class that allows passing the parseViaFramework parameter to the SQLiteConnection constructor.</li>
    <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
</ul>
<p>
    <b>1.0.84.0 - January 9, 2013</b>
</p>

<title>News</title>

<b>Version History</b>

<p>
    <b>1.0.85.0 - March XX, 2013 <font color="red">(release scheduled)</font></b>
</p>
<ul>
    <li>Updated to [http://www.sqlite.org/src/info/trunk|SQLite 3.7.16].</li>
    <li>Skip checking loaded assemblies for types tagged with the SQLiteFunction attribute when the No_SQLiteFunctions environment variable is set. Pursuant to [e4c8121f7b].</li>
    <li>Add static Execute method to the SQLiteCommand class.</li>
    <li>Add public constructor to the SQLiteDataAdapter class that allows passing the parseViaFramework parameter to the SQLiteConnection constructor.</li>
    <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
</ul>
<p>
    <b>1.0.84.0 - January 9, 2013</b>
</p>