System.Data.SQLite

    internal override int Changes
    {
      get
      {
        return UnsafeNativeMethods.sqlite3_changes(_sql);
      }
    }

    internal override long MemoryUsed
    {
      get
      {
        return UnsafeNativeMethods.sqlite3_memory_used();
      }
    }

    /// <summary>
    /// Shutdown the SQLite engine so that it can be restarted with different config options.
    /// We depend on auto initialization to recover.
    /// </summary>
    /// <returns>Returns a result code</returns>
    internal override int Shutdown()

    /// Returns the rowid of the most recent successful INSERT into the database from this connection.
    /// </summary>
    internal abstract long LastInsertRowId { get; }
    /// <summary>
    /// Returns the number of changes the last executing insert/update caused.
    /// </summary>
    internal abstract int Changes { get; }
    /// <summary>
    /// Returns the amount of memory, in bytes, currently in use by SQLite core library.
    /// </summary>
    internal abstract long MemoryUsed { get; }
    /// <summary>
    /// Shutdown the SQLite engine so that it can be restarted with different config options.
    /// We depend on auto initialization to recover.
    /// </summary>
    internal abstract int Shutdown();
    /// <summary>
    /// Returns non-zero if a database connection is open.

      {
        if (_sql == null)
          throw new InvalidOperationException("Database connection not valid for getting number of changes.");

        return _sql.Changes;
      }
    }

    /// <summary>
    /// Returns the amount of memory, in bytes, currently in use by SQLite core library.
    /// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
    [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
#endif
    public long MemoryUsed
    {
      get
      {
        if (_sql == null)
          throw new InvalidOperationException("Database connection not valid for getting memory used.");

        return _sql.MemoryUsed;
      }
    }

    /// <summary>
    /// Returns the version of the underlying SQLite database engine
    /// </summary>
    public static string SQLiteVersion
    {
      get { return SQLite3.SQLiteVersion; }

#if !PLATFORM_COMPACTFRAMEWORK
    [DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
    [DllImport(SQLITE_DLL)]
#endif
    internal static extern int sqlite3_changes(IntPtr db);

#if !PLATFORM_COMPACTFRAMEWORK
    [DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
    [DllImport(SQLITE_DLL)]
#endif
    internal static extern long sqlite3_memory_used();

#if !PLATFORM_COMPACTFRAMEWORK
    [DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
    [DllImport(SQLITE_DLL)]
#endif
    internal static extern int sqlite3_shutdown();

      #
      # NOTE: Delete the test database file now.  For now, all test database
      #       files are stored in the temporary directory.
      #
      catch {file delete [file join [getTemporaryPath] [file tail $fileName]]}
    }

    proc reportSQLiteResources { channel } {
      tputs $channel "---- memory now in use by SQLite... "

      if {[catch {object invoke -flags +NonPublic \
              System.Data.SQLite.UnsafeNativeMethods sqlite3_memory_used} \
              memory] == 0} then {
        tputs $channel [appendArgs $memory " bytes\n"]
      } else {
        #
        # NOTE: Maybe the SQLite native library is unavailable?
        #
        tputs $channel unknown\n
      }
    }

    proc runSQLiteTestPrologue {} {
      #
      # NOTE: Skip running our custom prologue if the main one has been skipped.
      #
      if {![info exists ::no(prologue.eagle)]} then {
        #

        # NOTE: Now, we need to know if the SQLite core library is available
        #       (i.e. because the managed-only System.Data.SQLite assembly can
        #       load without it; however, it cannot do anything useful without
        #       it).  If we are using the mixed-mode assembly and we already
        #       found it (above), this should always succeed.
        #
        checkForSQLite $::test_channel

        #
        # NOTE: Report the resource usage prior to running any tests.
        #
        reportSQLiteResources $::test_channel
      }
    }

    proc runSQLiteTestEpilogue {} {
      #
      # NOTE: Skip running our custom epilogue if the main one has been skipped.
      #
      if {![info exists ::no(epilogue.eagle)]} then {
        #
        # NOTE: Also report the resource usage after running the tests.
        #
        reportSQLiteResources $::test_channel
      }
    }

    ###########################################################################
    ############################# END Eagle ONLY ##############################
    ###########################################################################
  }