System.Data.SQLite
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SHA1: f1667b2ff7c1788e2e04b6354b8a426b430eb6a7
User & Date: rmsimpson 2006-04-11 19:45:18
Context
2006-04-12
05:47
1.0.28.0 prep check-in: 49268d8c86 user: rmsimpson tags: sourceforge
2006-04-11
19:45
64-bit changes check-in: f1667b2ff7 user: rmsimpson tags: sourceforge
19:44
3.3.5 codec changes check-in: c9d926d514 user: rmsimpson tags: sourceforge
Changes
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Changes to System.Data.SQLite/SQLiteFunction.cs.

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    /// <summary>
    /// Used internally to keep track of memory allocated for aggregate functions
    /// </summary>
    private IntPtr                     _interopCookie;
    /// <summary>
    /// Internal array used to keep track of aggregate function context data
    /// </summary>
    private Hashtable _contextDataList;

    /// <summary>
    /// Holds a reference to the callback function for user functions
    /// </summary>
    private SQLiteCallback  _InvokeFunc;
    /// <summary>
    /// Holds a reference to the callbakc function for stepping in an aggregate function
................................................................................
    private static List<SQLiteFunctionAttribute> _registeredFunctions = new List<SQLiteFunctionAttribute>();

    /// <summary>
    /// Internal constructor, initializes the function's internal variables.
    /// </summary>
    protected SQLiteFunction()
    {
      _contextDataList = new Hashtable();
    }

    /// <summary>
    /// Returns a reference to the underlying connection's SQLiteConvert class, which can be used to convert
    /// strings and DateTime's into the current connection's encoding schema.
    /// </summary>
    public SQLiteConvert SQLiteConvert
................................................................................
    /// </remarks>
    /// <param name="context">A raw context pointer</param>
    /// <param name="nArgs">Number of arguments passed in</param>
    /// <param name="argsptr">A pointer to the array of arguments</param>
    internal void StepCallback(IntPtr context, int nArgs, IntPtr argsptr)
    {
      int n = _base.AggregateCount(context);
      IntPtr nAux;
      object obj = null;

      nAux = _base.AggregateContext(context);
      if (n > 1) obj = _contextDataList[nAux];

      Step(ConvertParams(nArgs, argsptr), n, ref obj);
      _contextDataList[nAux] = obj;      
    }

    /// <summary>
................................................................................
    /// An internal aggregate Final function callback, which wraps the context pointer and calls the virtual Final() method.
    /// </summary>
    /// <param name="context">A raw context pointer</param>
    /// <param name="nArgs">Not used, always zero</param>
    /// <param name="argsptr">Not used, always zero</param>
    internal void FinalCallback(IntPtr context, int nArgs, IntPtr argsptr)
    {
      IntPtr n = _base.AggregateContext(context);
      object obj = null;

      if (_contextDataList.ContainsKey(n))
      {
        obj = _contextDataList[n];
        _contextDataList.Remove(n);
      }
................................................................................
    /// </summary>
    public void Dispose()
    {
      Dispose(true);

      IDisposable disp;

      foreach (KeyValuePair<IntPtr, object> kv in _contextDataList)
      {
        disp = kv.Value as IDisposable;
        if (disp != null)
          disp.Dispose();
      }
      _contextDataList.Clear();








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    /// <summary>
    /// Used internally to keep track of memory allocated for aggregate functions
    /// </summary>
    private IntPtr                     _interopCookie;
    /// <summary>
    /// Internal array used to keep track of aggregate function context data
    /// </summary>
    private Dictionary<long, object> _contextDataList;

    /// <summary>
    /// Holds a reference to the callback function for user functions
    /// </summary>
    private SQLiteCallback  _InvokeFunc;
    /// <summary>
    /// Holds a reference to the callbakc function for stepping in an aggregate function
................................................................................
    private static List<SQLiteFunctionAttribute> _registeredFunctions = new List<SQLiteFunctionAttribute>();

    /// <summary>
    /// Internal constructor, initializes the function's internal variables.
    /// </summary>
    protected SQLiteFunction()
    {
      _contextDataList = new Dictionary<long, object>();
    }

    /// <summary>
    /// Returns a reference to the underlying connection's SQLiteConvert class, which can be used to convert
    /// strings and DateTime's into the current connection's encoding schema.
    /// </summary>
    public SQLiteConvert SQLiteConvert
................................................................................
    /// </remarks>
    /// <param name="context">A raw context pointer</param>
    /// <param name="nArgs">Number of arguments passed in</param>
    /// <param name="argsptr">A pointer to the array of arguments</param>
    internal void StepCallback(IntPtr context, int nArgs, IntPtr argsptr)
    {
      int n = _base.AggregateCount(context);
      long nAux;
      object obj = null;

      nAux = (long)_base.AggregateContext(context);
      if (n > 1) obj = _contextDataList[nAux];

      Step(ConvertParams(nArgs, argsptr), n, ref obj);
      _contextDataList[nAux] = obj;      
    }

    /// <summary>
................................................................................
    /// An internal aggregate Final function callback, which wraps the context pointer and calls the virtual Final() method.
    /// </summary>
    /// <param name="context">A raw context pointer</param>
    /// <param name="nArgs">Not used, always zero</param>
    /// <param name="argsptr">Not used, always zero</param>
    internal void FinalCallback(IntPtr context, int nArgs, IntPtr argsptr)
    {
      long n = (long)_base.AggregateContext(context);
      object obj = null;

      if (_contextDataList.ContainsKey(n))
      {
        obj = _contextDataList[n];
        _contextDataList.Remove(n);
      }
................................................................................
    /// </summary>
    public void Dispose()
    {
      Dispose(true);

      IDisposable disp;

      foreach (KeyValuePair<long, object> kv in _contextDataList)
      {
        disp = kv.Value as IDisposable;
        if (disp != null)
          disp.Dispose();
      }
      _contextDataList.Clear();