// Copyright (C) Tim Coleman, 2002
//
+//
+// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+
using System.Collections;
using System.ComponentModel;
using System.Data;
private ArrayList gdaResults;
private int currentResult;
private int currentRow;
+ private bool disposed = false;
#endregion
internal OleDbDataReader (OleDbCommand command, ArrayList results)
{
this.command = command;
- this.command.Connection.DataReader = this;
open = true;
if (results != null)
gdaResults = results;
return FieldCount > 0 ? -1 : total_rows;
}
}
+
+ [MonoTODO]
+ public bool HasRows {
+ get {
+ throw new NotImplementedException ();
+ }
+ }
#endregion
open = false;
currentResult = -1;
currentRow = -1;
-
- this.command.Connection.DataReader = null;
- }
-
- ~OleDbDataReader ()
- {
- if (open)
- Close ();
}
public bool GetBoolean (int ordinal)
throw new NotImplementedException ();
}
+ [EditorBrowsableAttribute (EditorBrowsableState.Never)]
public char GetChar (int ordinal)
{
IntPtr value;
[MonoTODO]
public Type GetFieldType (int index)
{
- throw new NotImplementedException ();
+ IntPtr value;
+ GdaValueType type;
+
+ if (currentResult == -1)
+ throw new IndexOutOfRangeException ();
+
+ value = libgda.gda_data_model_get_value_at ((IntPtr) gdaResults[currentResult],
+ index, currentRow);
+ if (value == IntPtr.Zero)
+ throw new IndexOutOfRangeException ();
+
+ type = libgda.gda_value_get_type (value);
+ switch (type) {
+ case GdaValueType.Bigint : return typeof (long);
+ case GdaValueType.Boolean : return typeof (bool);
+ case GdaValueType.Date : return typeof (DateTime);
+ case GdaValueType.Double : return typeof (double);
+ case GdaValueType.Integer : return typeof (int);
+ case GdaValueType.Single : return typeof (float);
+ case GdaValueType.Smallint : return typeof (byte);
+ case GdaValueType.String : return typeof (string);
+ case GdaValueType.Time : return typeof (DateTime);
+ case GdaValueType.Timestamp : return typeof (DateTime);
+ case GdaValueType.Tinyint : return typeof (byte);
+ }
+
+ return typeof(string); // default
}
public float GetFloat (int ordinal)
public DataTable GetSchemaTable ()
{
- DataTable table = new DataTable ();
+ DataTable dataTableSchema = null;
+ // Only Results from SQL SELECT Queries
+ // get a DataTable for schema of the result
+ // otherwise, DataTable is null reference
+ if(this.FieldCount > 0) {
+
+ IntPtr attrs;
+ GdaValueType gdaType;
+ long columnSize = 0;
+
+ if (currentResult == -1) {
+ // FIXME: throw an exception?
+#if DEBUG_OleDbDataReader
+ Console.WriteLine("Error: current result -1");
+#endif
+ return null;
+ }
+
+ dataTableSchema = new DataTable ();
+
+ dataTableSchema.Columns.Add ("ColumnName", typeof (string));
+ dataTableSchema.Columns.Add ("ColumnOrdinal", typeof (int));
+ dataTableSchema.Columns.Add ("ColumnSize", typeof (int));
+ dataTableSchema.Columns.Add ("NumericPrecision", typeof (int));
+ dataTableSchema.Columns.Add ("NumericScale", typeof (int));
+ dataTableSchema.Columns.Add ("IsUnique", typeof (bool));
+ dataTableSchema.Columns.Add ("IsKey", typeof (bool));
+ DataColumn dc = dataTableSchema.Columns["IsKey"];
+ dc.AllowDBNull = true; // IsKey can have a DBNull
+ dataTableSchema.Columns.Add ("BaseCatalogName", typeof (string));
+ dataTableSchema.Columns.Add ("BaseColumnName", typeof (string));
+ dataTableSchema.Columns.Add ("BaseSchemaName", typeof (string));
+ dataTableSchema.Columns.Add ("BaseTableName", typeof (string));
+ dataTableSchema.Columns.Add ("DataType", typeof(Type));
+ dataTableSchema.Columns.Add ("AllowDBNull", typeof (bool));
+ dataTableSchema.Columns.Add ("ProviderType", typeof (int));
+ dataTableSchema.Columns.Add ("IsAliased", typeof (bool));
+ dataTableSchema.Columns.Add ("IsExpression", typeof (bool));
+ dataTableSchema.Columns.Add ("IsIdentity", typeof (bool));
+ dataTableSchema.Columns.Add ("IsAutoIncrement", typeof (bool));
+ dataTableSchema.Columns.Add ("IsRowVersion", typeof (bool));
+ dataTableSchema.Columns.Add ("IsHidden", typeof (bool));
+ dataTableSchema.Columns.Add ("IsLong", typeof (bool));
+ dataTableSchema.Columns.Add ("IsReadOnly", typeof (bool));
+\r
+ DataRow schemaRow;
+ DbType dbType;
+ Type typ;
+
+ for (int i = 0; i < this.FieldCount; i += 1 ) {
+
+ schemaRow = dataTableSchema.NewRow ();
+
+ attrs = libgda.gda_data_model_describe_column ((IntPtr) gdaResults[currentResult],
+ i);
+ if (attrs == IntPtr.Zero){
+ // FIXME: throw exception
+#if DEBUG_OleDbDataReader
+ Console.WriteLine("Error: attrs null");
+#endif
+ return null;
+ }
+
+ gdaType = libgda.gda_field_attributes_get_gdatype (attrs);
+ columnSize = libgda.gda_field_attributes_get_defined_size (attrs);
+ libgda.gda_field_attributes_free (attrs);
+
+ schemaRow["ColumnName"] = this.GetName(i);
+ schemaRow["ColumnOrdinal"] = i + 1;
+
+ schemaRow["ColumnSize"] = (int) columnSize;
+ schemaRow["NumericPrecision"] = 0;
+ schemaRow["NumericScale"] = 0;
+ // TODO: need to get KeyInfo
+ //if((cmdBehavior & CommandBehavior.KeyInfo) == CommandBehavior.KeyInfo) {
+ // bool IsUnique, IsKey;
+ // GetKeyInfo(field[i].Name, out IsUnique, out IsKey);
+ //}
+ //else {
+ schemaRow["IsUnique"] = false;
+ schemaRow["IsKey"] = DBNull.Value;
+ //}
+ schemaRow["BaseCatalogName"] = "";
+
+ schemaRow["BaseColumnName"] = this.GetName(i);
+ schemaRow["BaseSchemaName"] = "";
+ schemaRow["BaseTableName"] = "";
+
+ schemaRow["DataType"] = this.GetFieldType(i);\r
+
+ schemaRow["AllowDBNull"] = false;
+
+ schemaRow["ProviderType"] = (int) gdaType;
+ schemaRow["IsAliased"] = false;
+ schemaRow["IsExpression"] = false;
+ schemaRow["IsIdentity"] = false;
+ schemaRow["IsAutoIncrement"] = false;
+ schemaRow["IsRowVersion"] = false;
+ schemaRow["IsHidden"] = false;
+ schemaRow["IsLong"] = false;
+ schemaRow["IsReadOnly"] = false;
+
+ schemaRow.AcceptChanges();
+
+ dataTableSchema.Rows.Add (schemaRow);
+ }
+
+#if DEBUG_OleDbDataReader
+ Console.WriteLine("********** DEBUG Table Schema BEGIN ************");
+ foreach (DataRow myRow in dataTableSchema.Rows) {\r
+ foreach (DataColumn myCol in dataTableSchema.Columns)\r
+ Console.WriteLine(myCol.ColumnName + " = " + myRow[myCol]);\r
+ Console.WriteLine();\r
+ }
+ Console.WriteLine("********** DEBUG Table Schema END ************");
+#endif // DEBUG_OleDbDataReader
- // FIXME: implement
- return table;
+ }
+
+ return dataTableSchema;
}
public string GetString (int ordinal)
throw new NotImplementedException ();
}
- [MonoTODO]
- void IDisposable.Dispose ()
- {
- throw new NotImplementedException ();
- }
-
- [MonoTODO]
IEnumerator IEnumerable.GetEnumerator ()
{
- throw new NotImplementedException ();
+ return new DbEnumerator (this);
}
public bool IsDBNull (int ordinal)
}
#endregion
+
+ #region Destructors
+
+ private void Dispose (bool disposing) {
+ if (!this.disposed) {
+ if (disposing) {
+ // release any managed resources
+ command = null;
+ }
+ // release any unmanaged resources
+ if (gdaResults != null) {
+ gdaResults.Clear ();
+ gdaResults = null;
+ }
+
+ // close any handles
+ if (open)
+ Close ();
+
+ this.disposed = true;
+ }
+ }
+
+ void IDisposable.Dispose() {
+ Dispose (true);
+ }
+
+ ~OleDbDataReader() {
+ Dispose (false);
+ }
+
+ #endregion // Destructors
+
}
}
projects / mono.git / blobdiff