System.Data.SQLite
Check-in [a6a79f6c79]
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Overview
Comment:Fixed a bug that failed to throw an exception if there wasn't a current row and a function was called to read data from the current row
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SHA1: a6a79f6c790a4b835dd506198d8670fb55a768ee
User & Date: rmsimpson 2005-11-30 18:04:58
Context
2005-12-07
22:40
Fix over-aggressive preparation of statements before execution check-in: ba2464b7f6 user: rmsimpson tags: sourceforge
2005-11-30
18:04
Fixed a bug that failed to throw an exception if there wasn't a current row and a function was called to read data from the current row check-in: a6a79f6c79 user: rmsimpson tags: sourceforge
2005-11-22
14:54
Fixed the incomplete Catalogs schema check-in: 897a253ad0 user: rmsimpson tags: sourceforge
Changes
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Changes to System.Data.SQLite/SQLiteDataReader.cs.

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    /// Throw an error if the datareader is closed
    /// </summary>
    private void CheckClosed()
    {
      if (_command == null)
        throw new InvalidOperationException("DataReader has been closed");
    }










    /// <summary>
    /// Enumerator support
    /// </summary>
    /// <returns>Returns a DbEnumerator object.</returns>
    public override Collections.IEnumerator GetEnumerator()
    {
................................................................................
    /// <returns>
    /// This function throws an InvalidTypeCast() exception if the requested type doesn't match the column's definition or affinity.
    /// </returns>
    /// <param name="i">The index of the column to type-check</param>
    /// <param name="typ">The type we want to get out of the column</param>
    private void VerifyType(int i, DbType typ)
    {

      SQLiteType t = GetSQLiteType(i);

      if (t.Type == typ) return;

        // Coercable type, usually a literal of some kind
      switch (_fieldTypeArray[i].Affinity)
      {
................................................................................
    /// <summary>
    /// Retreives the values of multiple columns, up to the size of the supplied array
    /// </summary>
    /// <param name="values">The array to fill with values from the columns in the current resultset</param>
    /// <returns>The number of columns retrieved</returns>
    public override int GetValues(object[] values)
    {
      CheckClosed();
      int nMax = _fieldCount;
      if (values.Length < nMax) nMax = values.Length;

      for (int n = 0; n < nMax; n++)
      {
        values.SetValue(GetValue(n), n);
      }







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    /// Throw an error if the datareader is closed
    /// </summary>
    private void CheckClosed()
    {
      if (_command == null)
        throw new InvalidOperationException("DataReader has been closed");
    }

    /// <summary>
    /// Throw an error if a row is not loaded
    /// </summary>
    private void CheckValidRow()
    {
      if (_readingState != 0)
        throw new InvalidOperationException("No current row");
    }

    /// <summary>
    /// Enumerator support
    /// </summary>
    /// <returns>Returns a DbEnumerator object.</returns>
    public override Collections.IEnumerator GetEnumerator()
    {
................................................................................
    /// <returns>
    /// This function throws an InvalidTypeCast() exception if the requested type doesn't match the column's definition or affinity.
    /// </returns>
    /// <param name="i">The index of the column to type-check</param>
    /// <param name="typ">The type we want to get out of the column</param>
    private void VerifyType(int i, DbType typ)
    {
      CheckValidRow();
      SQLiteType t = GetSQLiteType(i);

      if (t.Type == typ) return;

        // Coercable type, usually a literal of some kind
      switch (_fieldTypeArray[i].Affinity)
      {
................................................................................
    /// <summary>
    /// Retreives the values of multiple columns, up to the size of the supplied array
    /// </summary>
    /// <param name="values">The array to fill with values from the columns in the current resultset</param>
    /// <returns>The number of columns retrieved</returns>
    public override int GetValues(object[] values)
    {

      int nMax = _fieldCount;
      if (values.Length < nMax) nMax = values.Length;

      for (int n = 0; n < nMax; n++)
      {
        values.SetValue(GetValue(n), n);
      }