System.Data.SQLite

      <li>Implement the Substring method for LINQ using the &quot;substr&quot; core SQL function.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Honor the pre-existing flags for connections during the Open method. Fix for <a href="https://system.data.sqlite.org/index.html/info/964063da16">[964063da16]</a>.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Remove errant semi-colons from the SQL used by LINQ to INSERT and then SELECT rows with composite primary keys. Fix for <a href="https://system.data.sqlite.org/index.html/info/9d353b0bd8">[9d353b0bd8]</a>.</li>
      <li>Change the base type for the SQLiteConnectionFlags enumeration to long integer.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Add extended return codes to the SQLiteErrorCode enumeration. Pursuant to <a href="https://system.data.sqlite.org/index.html/info/71bedaca19">[71bedaca19]</a>.&nbsp;<b>** Potentially Incompatible Change **</b></li>
      <li>Improve exception handling in all native callbacks implemented in the SQLiteConnection class.</li>
      <li>Add Progress event and ProgressOps connection string property to enable raising progress events during long-running queries.</li>
      <li>Add &quot;Recursive Triggers&quot; connection string property to enable or disable the recursive trigger capability. Pursuant to <a href="https://system.data.sqlite.org/index.html/info/3a82ee635b">[3a82ee635b]</a>.</li>
      <li>Add NoDefaultFlags connection string property to prevent the default connection flags from being used. Pursuant to <a href="https://system.data.sqlite.org/index.html/info/964063da16">[964063da16]</a>.</li>
      <li>Add VfsName connection string property to allow a non-default VFS to be used by the SQLite core library.</li>
      <li>Add BusyTimeout connection string property to set the busy timeout to be used by the SQLite core library.</li>
      <li>Add UnbindFunction and UnbindAllFunctions methods to the SQLiteConnection class.</li>
      <li>Enable integration with the <a href="http://www.hwaci.com/sw/sqlite/zipvfs.html">ZipVFS</a> extension.</li>
    </ul>
    <p><b>1.0.97.0 - May 26, 2015</b></p>

  /// The approximate number of virtual machine instructions between progress
  /// events.  In order for progress events to actually fire, the event handler
  /// must be added to the <see cref="Progress" /> event as well.
  /// </description>
  /// <description>N</description>
  /// <description>0</description>
  /// </item>
  /// <item>
  /// <description>Recursive Triggers</description>
  /// <description>
  /// <b>True</b> - Enable the recursive trigger capability.
  /// <b>False</b> - Disable the recursive trigger capability.
  /// </description>
  /// <description>N</description>
  /// <description>False</description>
  /// </item>
  /// </list>
  /// </remarks>
  public sealed partial class SQLiteConnection : DbConnection, ICloneable, IDisposable
  {
    #region Private Constants
    /// <summary>
    /// The "invalid value" for the <see cref="DbType" /> enumeration used

    private const bool DefaultReadOnly = false;
    internal const bool DefaultBinaryGUID = true;
    private const bool DefaultUseUTF16Encoding = false;
    private const bool DefaultToFullPath = true;
    private const bool DefaultPooling = false; // TODO: Maybe promote this to static property?
    private const bool DefaultLegacyFormat = false;
    private const bool DefaultForeignKeys = false;
    private const bool DefaultRecursiveTriggers = false;
    private const bool DefaultEnlist = true;
    private const bool DefaultSetDefaults = true;
    internal const int DefaultPrepareRetries = 3;
    private const string DefaultVfsName = null;
    private const int DefaultProgressOps = 0;

#if INTEROP_INCLUDE_ZIPVFS

                  strValue = FindKey(opts, "Foreign Keys", DefaultForeignKeys.ToString());
                  boolValue = SQLiteConvert.ToBoolean(strValue);
                  if (boolValue != DefaultForeignKeys)
                  {
                      cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA foreign_keys={0}", boolValue ? "ON" : "OFF");
                      cmd.ExecuteNonQuery();
                  }

                  strValue = FindKey(opts, "Recursive Triggers", DefaultRecursiveTriggers.ToString());
                  boolValue = SQLiteConvert.ToBoolean(strValue);
                  if (boolValue != DefaultRecursiveTriggers)
                  {
                      cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA recursive_triggers={0}", boolValue ? "ON" : "OFF");
                      cmd.ExecuteNonQuery();
                  }
              }
          }

          if (_progressHandler != null)
              _sql.SetProgressHook(_progressOps, _progressCallback);

          if (_authorizerHandler != null)

            return SQLiteConvert.ToBoolean(value);
        }
        set
        {
            this["foreign keys"] = value;
        }
    }

    /// <summary>
    /// Enable or disable the recursive trigger capability.
    /// </summary>
    [DisplayName("Recursive Triggers")]
    [Browsable(true)]
    [DefaultValue(false)]
    public bool RecursiveTriggers
    {
        get
        {
            object value;
            TryGetValue("recursive triggers", out value);
            return SQLiteConvert.ToBoolean(value);
        }
        set
        {
            this["recursive triggers"] = value;
        }
    }

    /// <summary>
    /// If non-null, this is the version of ZipVFS to use.  This requires the
    /// System.Data.SQLite interop assembly -AND- primary managed assembly to
    /// be compiled with the INTEROP_INCLUDE_ZIPVFS option; otherwise, this
    /// property does nothing.
    /// </summary>

                   Enlist FailIfMissing "Legacy Format" "Read Only" \
                   Password "Page Size" "Max Page Count" "Cache Size" \
                   DateTimeFormat DateTimeKind DateTimeFormatString \
                   BaseSchemaName "Journal Mode" "Default IsolationLevel" \
                   "Foreign Keys" Flags SetDefaults ToFullPath HexPassword \
                   DefaultDbType DefaultTypeName NoSharedFlags PrepareRetries \
                   ZipVfsVersion VfsName BusyTimeout ProgressOps \
                   NoDefaultFlags "Recursive Triggers"]

    set values [list null 3 Normal True False \
                     True test.db test.db file:test.db 60 \
                     False True False True \
                     secret 4096 1024 8192 \
                     UnixEpoch Utc yyyy-MM-dd sqlite_schema \
                     Memory Serializable False \
                     Default False False 736563726574 String \
                     TEXT True 20 v2 test 1000 2000 True True]

    set propertyNames [list null Version SyncMode UseUTF16Encoding Pooling \
                            BinaryGUID DataSource Uri FullUri DefaultTimeout \
                            Enlist FailIfMissing LegacyFormat ReadOnly \
                            Password PageSize MaxPageCount CacheSize \
                            DateTimeFormat DateTimeKind DateTimeFormatString \
                            BaseSchemaName JournalMode DefaultIsolationLevel \
                            ForeignKeys Flags SetDefaults ToFullPath \
                            HexPassword DefaultDbType DefaultTypeName \
                            NoSharedFlags PrepareRetries ZipVfsVersion \
                            VfsName BusyTimeout ProgressOps NoDefaultFlags \
                            RecursiveTriggers]

    foreach key $keys value $values propertyName $propertyNames {
      set code [catch {
        object invoke _Dynamic${id}.Test${id} GetConnectionString \
            $key $value $propertyName
      } result]

\{Serializable, Default IsolationLevel=Serializable\} 0 \{False, Foreign\
Keys=False\} 0 \{(?:Default|LogCallbackException),\
Flags=(?:Default|LogCallbackException)\} 0 \{False, SetDefaults=False\} 0\
\{False, ToFullPath=False\} 0 {736563726574, HexPassword=736563726574} 0\
\{String, DefaultDbType=String\} 0 \{TEXT, DefaultTypeName=TEXT\} 0 \{True,\
NoSharedFlags=True\} 0 \{20, PrepareRetries=20\} 0 \{v2, ZipVfsVersion=v2\} 0\
\{test, VfsName=test\} 0 \{1000, BusyTimeout=1000\} 0 \{2000,\
ProgressOps=2000\} 0 \{True, NoDefaultFlags=True\} 0 \{True, Recursive\
Triggers=True\}$}}

###############################################################################

runTest {test data-1.18 {SQLiteConvert ToDateTime (Julian Day)} -body {
  set dateTime [object invoke -create System.Data.SQLite.SQLiteConvert \
      ToDateTime 2455928.0 Utc]

    <li>Implement the Substring method for LINQ using the &quot;substr&quot; core SQL function.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Honor the pre-existing flags for connections during the Open method. Fix for [964063da16].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Remove errant semi-colons from the SQL used by LINQ to INSERT and then SELECT rows with composite primary keys. Fix for [9d353b0bd8].</li>
    <li>Change the base type for the SQLiteConnectionFlags enumeration to long integer.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Add extended return codes to the SQLiteErrorCode enumeration. Pursuant to [71bedaca19].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Improve exception handling in all native callbacks implemented in the SQLiteConnection class.</li>
    <li>Add Progress event and ProgressOps connection string property to enable raising progress events during long-running queries.</li>
    <li>Add &quot;Recursive Triggers&quot; connection string property to enable or disable the recursive trigger capability. Pursuant to [3a82ee635b].</li>
    <li>Add NoDefaultFlags connection string property to prevent the default connection flags from being used. Pursuant to [964063da16].</li>
    <li>Add VfsName connection string property to allow a non-default VFS to be used by the SQLite core library.</li>
    <li>Add BusyTimeout connection string property to set the busy timeout to be used by the SQLite core library.</li>
    <li>Add UnbindFunction and UnbindAllFunctions methods to the SQLiteConnection class.</li>
    <li>Enable integration with the <a href="http://www.hwaci.com/sw/sqlite/zipvfs.html">ZipVFS</a> extension.</li>
</ul>
<p>

    <li>Implement the Substring method for LINQ using the &quot;substr&quot; core SQL function.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Honor the pre-existing flags for connections during the Open method. Fix for [964063da16].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Remove errant semi-colons from the SQL used by LINQ to INSERT and then SELECT rows with composite primary keys. Fix for [9d353b0bd8].</li>
    <li>Change the base type for the SQLiteConnectionFlags enumeration to long integer.&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Add extended return codes to the SQLiteErrorCode enumeration. Pursuant to [71bedaca19].&nbsp;<b>** Potentially Incompatible Change **</b></li>
    <li>Improve exception handling in all native callbacks implemented in the SQLiteConnection class.</li>
    <li>Add Progress event and ProgressOps connection string property to enable raising progress events during long-running queries.</li>
    <li>Add &quot;Recursive Triggers&quot; connection string property to enable or disable the recursive trigger capability. Pursuant to [3a82ee635b].</li>
    <li>Add NoDefaultFlags connection string property to prevent the default connection flags from being used. Pursuant to [964063da16].</li>
    <li>Add VfsName connection string property to allow a non-default VFS to be used by the SQLite core library.</li>
    <li>Add BusyTimeout connection string property to set the busy timeout to be used by the SQLite core library.</li>
    <li>Add UnbindFunction and UnbindAllFunctions methods to the SQLiteConnection class.</li>
    <li>Enable integration with the [http://www.hwaci.com/sw/sqlite/zipvfs.html|ZipVFS] extension.</li>
</ul>
<p>