System.Data.SQLite
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Overview
Comment:Support using the directory containing the primary managed-only assembly itself as the basis for native library pre-loading via setting the 'PreLoadSQLite_UseAssemblyDirectory' environment variable (to anything).
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SHA1: 80f0294664bfdfae4f8044cc05593c8ae76fba5d
User & Date: mistachkin 2013-02-27 01:44:35
References
2013-03-07
21:13 Closed ticket [1b0bb16a62]: Improve UnsafeNativeMethods.GetBaseDirectory. plus 7 other changes artifact: f3602870da user: mistachkin
Context
2013-02-27
07:02
Restore the default connection pool implementation in the test cleanup for ticket [393d954be0]. check-in: 7539c9f0a6 user: mistachkin tags: trunk
01:44
Support using the directory containing the primary managed-only assembly itself as the basis for native library pre-loading via setting the 'PreLoadSQLite_UseAssemblyDirectory' environment variable (to anything). check-in: 80f0294664 user: mistachkin tags: trunk
2013-02-26
22:43
For the stress test, more carefully synchronize the start for each workload payload so that they all start at almost the 'exact' same time. check-in: be13409f60 user: mistachkin tags: trunk
Changes
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Changes to Doc/Extra/environment.html.

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        <tr valign="top">
          <td>PreLoadSQLite_ProcessorArchitecture</td>
          <td>If this environment variable is set [to anything], it will be
          used instead of the processor architecture value contained in the
          PROCESSOR_ARCHITECTURE environment variable to help build the path
          of the native library to pre-load.</td>
        </tr>








        <tr valign="top">
          <td>PROCESSOR_ARCHITECTURE</td>
          <td>This environment variable is normally set by the operating
          system itself and should reflect the native processor architecture
          of the current process (e.g. a 32-bit x86 application running on a
          64-bit x64 operating system should have the value &quot;x86&quot;).
          </td>







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        <tr valign="top">
          <td>PreLoadSQLite_ProcessorArchitecture</td>
          <td>If this environment variable is set [to anything], it will be
          used instead of the processor architecture value contained in the
          PROCESSOR_ARCHITECTURE environment variable to help build the path
          of the native library to pre-load.</td>
        </tr>
        <tr valign="top">
          <td>PreLoadSQLite_UseAssemblyDirectory</td>
          <td>If this environment variable is set [to anything], the location
          of the currently executing assembly (i.e. the one containing all the
          managed components for System.Data.SQLite) will be used as the basis
          for locating the the native library to pre-load (i.e. instead of
          using the application domain base directory).</td>
        </tr>
        <tr valign="top">
          <td>PROCESSOR_ARCHITECTURE</td>
          <td>This environment variable is normally set by the operating
          system itself and should reflect the native processor architecture
          of the current process (e.g. a 32-bit x86 application running on a
          64-bit x64 operating system should have the value &quot;x86&quot;).
          </td>

Changes to Doc/Extra/version.html.

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      <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
      <li>Support automatic value conversions for columns with a declared type of BIGUINT, INTEGER8, INTEGER16, INTEGER32, INTEGER64, SMALLUINT, TINYSINT, UNSIGNEDINTEGER, UNSIGNEDINTEGER8, UNSIGNEDINTEGER16, UNSIGNEDINTEGER32, UNSIGNEDINTEGER64, INT8, INT16, INT32, INT64, UINT, UINT8, UINT16, UINT32, UINT64, or ULONG.</li>
      <li>Add BindUInt32AsInt64 connection flag to force binding of UInt32 values as Int64 instead. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/c010fa6584">[c010fa6584]</a>.</li>
      <li>Add BindAllAsText connection flag to force binding of all values as text.</li>
      <li>Remove AUTOINCREMENT from the column type name map.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Avoid throwing overflow exceptions from the SQLite3.GetValue method for integral column types. Partial fix for <a href="http://system.data.sqlite.org/index.html/info/c010fa6584">[c010fa6584]</a>.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Use the legacy connection closing algorithm when built with the INTEROP_LEGACY_CLOSE compile-time option.</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>
      <li>Explicitly dispose of all SQLiteCommand objects managed by the DbDataAdapter class. Fix for <a href="http://system.data.sqlite.org/index.html/info/6434e23a0f">[6434e23a0f]</a>.</li>
      <li>Add Cancel method to the SQLiteConnection class to interrupt a long running query.</li>
      <li>Improve thread safety of the SQLiteLog.LogMessage method.</li>







>







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      <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
      <li>Support automatic value conversions for columns with a declared type of BIGUINT, INTEGER8, INTEGER16, INTEGER32, INTEGER64, SMALLUINT, TINYSINT, UNSIGNEDINTEGER, UNSIGNEDINTEGER8, UNSIGNEDINTEGER16, UNSIGNEDINTEGER32, UNSIGNEDINTEGER64, INT8, INT16, INT32, INT64, UINT, UINT8, UINT16, UINT32, UINT64, or ULONG.</li>
      <li>Add BindUInt32AsInt64 connection flag to force binding of UInt32 values as Int64 instead. Pursuant to <a href="http://system.data.sqlite.org/index.html/info/c010fa6584">[c010fa6584]</a>.</li>
      <li>Add BindAllAsText connection flag to force binding of all values as text.</li>
      <li>Remove AUTOINCREMENT from the column type name map.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Avoid throwing overflow exceptions from the SQLite3.GetValue method for integral column types. Partial fix for <a href="http://system.data.sqlite.org/index.html/info/c010fa6584">[c010fa6584]</a>.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Use the legacy connection closing algorithm when built with the INTEROP_LEGACY_CLOSE compile-time option.</li>
      <li>Support using the directory containing the primary managed-only assembly as the basis for native library pre-loading.</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>
      <li>Explicitly dispose of all SQLiteCommand objects managed by the DbDataAdapter class. Fix for <a href="http://system.data.sqlite.org/index.html/info/6434e23a0f">[6434e23a0f]</a>.</li>
      <li>Add Cancel method to the SQLiteConnection class to interrupt a long running query.</li>
      <li>Improve thread safety of the SQLiteLog.LogMessage method.</li>

Changes to System.Data.SQLite/UnsafeNativeMethods.cs.

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      /// 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)
          {
................................................................................
          //       is set, use it verbatim for the base directory.
          //
          string directory = Environment.GetEnvironmentVariable(
              "PreLoadSQLite_BaseDirectory");

          if (directory != null)
              return directory;





























          //
          // NOTE: Otherwise, fallback on using the base directory of the
          //       current application domain.
          //
          return AppDomain.CurrentDomain.BaseDirectory;
#else







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      /// 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 (to
          //       anything), skip all our special code and simply return.
          //
          if (Environment.GetEnvironmentVariable("No_PreLoadSQLite") != null)
              return;
#endif

          lock (staticSyncRoot)
          {
................................................................................
          //       is set, use it verbatim for the base directory.
          //
          string directory = Environment.GetEnvironmentVariable(
              "PreLoadSQLite_BaseDirectory");

          if (directory != null)
              return directory;

          //
          // NOTE: If the "PreLoadSQLite_UseAssemblyDirectory" environment
          //       variable is set (to anything), attempt to use the directory
          //       containing the currently executing assembly (i.e.
          //       System.Data.SQLite) intsead of the application domain base
          //       directory.
          //
          if (Environment.GetEnvironmentVariable(
                "PreLoadSQLite_UseAssemblyDirectory") != null)
          {
              try
              {
                  Assembly assembly = Assembly.GetExecutingAssembly();

                  if (assembly != null)
                  {
                      directory = Path.GetDirectoryName(assembly.Location);

                      if (!String.IsNullOrEmpty(directory))
                          return directory;
                  }
              }
              catch
              {
                  // do nothing.
              }
          }

          //
          // NOTE: Otherwise, fallback on using the base directory of the
          //       current application domain.
          //
          return AppDomain.CurrentDomain.BaseDirectory;
#else

Changes to readme.htm.

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    <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
    <li>Support automatic value conversions for columns with a declared type of BIGUINT, INTEGER8, INTEGER16, INTEGER32, INTEGER64, SMALLUINT, TINYSINT, UNSIGNEDINTEGER, UNSIGNEDINTEGER8, UNSIGNEDINTEGER16, UNSIGNEDINTEGER32, UNSIGNEDINTEGER64, INT8, INT16, INT32, INT64, UINT, UINT8, UINT16, UINT32, UINT64, or ULONG.</li>
    <li>Add BindUInt32AsInt64 connection flag to force binding of UInt32 values as Int64 instead. Pursuant to [c010fa6584].</li>
    <li>Add BindAllAsText connection flag to force binding of all values as text.</li>
    <li>Remove AUTOINCREMENT from the column type name map.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Avoid throwing overflow exceptions from the SQLite3.GetValue method for integral column types. Partial fix for [c010fa6584].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Use the legacy connection closing algorithm when built with the INTEROP_LEGACY_CLOSE compile-time option.</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>
    <li>Explicitly dispose of all SQLiteCommand objects managed by the DbDataAdapter class. Fix for [6434e23a0f].</li>







>







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    <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
    <li>Support automatic value conversions for columns with a declared type of BIGUINT, INTEGER8, INTEGER16, INTEGER32, INTEGER64, SMALLUINT, TINYSINT, UNSIGNEDINTEGER, UNSIGNEDINTEGER8, UNSIGNEDINTEGER16, UNSIGNEDINTEGER32, UNSIGNEDINTEGER64, INT8, INT16, INT32, INT64, UINT, UINT8, UINT16, UINT32, UINT64, or ULONG.</li>
    <li>Add BindUInt32AsInt64 connection flag to force binding of UInt32 values as Int64 instead. Pursuant to [c010fa6584].</li>
    <li>Add BindAllAsText connection flag to force binding of all values as text.</li>
    <li>Remove AUTOINCREMENT from the column type name map.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Avoid throwing overflow exceptions from the SQLite3.GetValue method for integral column types. Partial fix for [c010fa6584].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Use the legacy connection closing algorithm when built with the INTEROP_LEGACY_CLOSE compile-time option.</li>
    <li>Support using the directory containing the primary managed-only assembly as the basis for native library pre-loading.</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>
    <li>Explicitly dispose of all SQLiteCommand objects managed by the DbDataAdapter class. Fix for [6434e23a0f].</li>

Changes to www/news.wiki.

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    <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
    <li>Support automatic value conversions for columns with a declared type of BIGUINT, INTEGER8, INTEGER16, INTEGER32, INTEGER64, SMALLUINT, TINYSINT, UNSIGNEDINTEGER, UNSIGNEDINTEGER8, UNSIGNEDINTEGER16, UNSIGNEDINTEGER32, UNSIGNEDINTEGER64, INT8, INT16, INT32, INT64, UINT, UINT8, UINT16, UINT32, UINT64, or ULONG.</li>
    <li>Add BindUInt32AsInt64 connection flag to force binding of UInt32 values as Int64 instead. Pursuant to [c010fa6584].</li>
    <li>Add BindAllAsText connection flag to force binding of all values as text.</li>
    <li>Remove AUTOINCREMENT from the column type name map.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Avoid throwing overflow exceptions from the SQLite3.GetValue method for integral column types. Partial fix for [c010fa6584].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Use the legacy connection closing algorithm when built with the INTEROP_LEGACY_CLOSE compile-time option.</li>

</ul>
<p>
    <b>1.0.84.0 - January 9, 2013</b>
</p>
<ul>
    <li>Updated to [http://www.sqlite.org/releaselog/3_7_15_2.html|SQLite 3.7.15.2].</li>
    <li>Explicitly dispose of all SQLiteCommand objects managed by the DbDataAdapter class. Fix for [6434e23a0f].</li>







>







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    <li>When built with the CHECK_STATE compile-time option, skip throwing exceptions from the SQLiteDataReader class when the object is being disposed.</li>
    <li>Support automatic value conversions for columns with a declared type of BIGUINT, INTEGER8, INTEGER16, INTEGER32, INTEGER64, SMALLUINT, TINYSINT, UNSIGNEDINTEGER, UNSIGNEDINTEGER8, UNSIGNEDINTEGER16, UNSIGNEDINTEGER32, UNSIGNEDINTEGER64, INT8, INT16, INT32, INT64, UINT, UINT8, UINT16, UINT32, UINT64, or ULONG.</li>
    <li>Add BindUInt32AsInt64 connection flag to force binding of UInt32 values as Int64 instead. Pursuant to [c010fa6584].</li>
    <li>Add BindAllAsText connection flag to force binding of all values as text.</li>
    <li>Remove AUTOINCREMENT from the column type name map.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Avoid throwing overflow exceptions from the SQLite3.GetValue method for integral column types. Partial fix for [c010fa6584].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Use the legacy connection closing algorithm when built with the INTEROP_LEGACY_CLOSE compile-time option.</li>
    <li>Support using the directory containing the primary managed-only assembly as the basis for native library pre-loading.</li>
</ul>
<p>
    <b>1.0.84.0 - January 9, 2013</b>
</p>
<ul>
    <li>Updated to [http://www.sqlite.org/releaselog/3_7_15_2.html|SQLite 3.7.15.2].</li>
    <li>Explicitly dispose of all SQLiteCommand objects managed by the DbDataAdapter class. Fix for [6434e23a0f].</li>