protected override void InternalInsertRow(Schema.TableVar ATableVar, Row ARow)
{
using (SQLCommand LCommand = Connection.CreateCommand(false))
{
string LTableSchema = D4.MetaData.GetTag(ATableVar.MetaData, "Storage.Schema", Device.Schema);
string LTableName = Device.ToSQLIdentifier(ATableVar);
if (LTableSchema != String.Empty)
{
LTableName = String.Format("{0}.{1}", LTableSchema, LTableName);
}
if (Device.CommandTimeout >= 0)
{
LCommand.CommandTimeout = Device.CommandTimeout;
}
LCommand.Statement = LTableName;
LCommand.CommandType = SQLCommandType.Table;
LCommand.LockType = SQLLockType.Pessimistic;
SQLCursor LCursor = LCommand.Open(SQLCursorType.Dynamic, SQLIsolationLevel.Serializable);
try
{
SQLScalarType LScalarType;
Schema.TableVarColumn LColumn;
string[] LNames = new string[ARow.DataType.Columns.Count];
object[] LValues = new object[ARow.DataType.Columns.Count];
for (int LIndex = 0; LIndex < ARow.DataType.Columns.Count; LIndex++)
{
LColumn = ATableVar.Columns[ARow.DataType.Columns[LIndex].Name];
LScalarType = (SQLScalarType)Device.DeviceScalarTypes[LColumn.DataType];
LNames[LIndex] = Device.ToSQLIdentifier(LColumn);
LValues[LIndex] = ARow.HasValue(LIndex) ? LScalarType.ParameterFromScalar(ARow[LIndex]) : null;
}
LCursor.Insert(LNames, LValues);
}
finally
{
LCommand.Close(LCursor);
}
}
}
// AcquireConnection(SQLConnectionHeader) // sets the SQLDeviceCursor reference for the SQLConnectionHeader record in the SQLDeviceSession
public void AcquireConnection(SQLConnectionHeader connectionHeader)
{
_connection = connectionHeader.Connection;
try
{
_command = _connection.CreateCommand(true);
try
{
if (_buffer.Count > 0)
{
RestrictStatement();
}
else
{
UnrestrictStatement();
}
PrepareStatement();
_command.Statement = _deviceSession.Device.Emitter.Emit(_statement);
_command.Parameters.AddRange(_parameters);
_command.LockType = _lockType;
try
{
_cursor = _command.Open(_cursorType, _isolationLevel);
try
{
#if USEINCLUSIVEMULTIPLEX
if (_buffer.Count > 0)
{
_cursor.Next();
}
#endif
connectionHeader.DeviceCursor = this;
}
catch
{
_command.Close(_cursor);
_cursor = null;
throw;
}
}
catch (Exception exception)
{
_deviceSession.TransactionFailure = _connection.TransactionFailure;
throw _deviceSession.WrapException(exception);
}
}
catch
{
_command.Dispose();
_command = null;
throw;
}
}
catch
{
_connection = null;
throw;
}
}
protected override void InternalDeleteRow(Schema.TableVar ATableVar, Row ARow)
{
using (SQLCommand LCommand = Connection.CreateCommand(false))
{
string LTableSchema = D4.MetaData.GetTag(ATableVar.MetaData, "Storage.Schema", Device.Schema);
string LTableName = Device.ToSQLIdentifier(ATableVar);
if (LTableSchema != String.Empty)
{
LTableName = String.Format("{0}.{1}", LTableSchema, LTableName);
}
if (Device.CommandTimeout >= 0)
{
LCommand.CommandTimeout = Device.CommandTimeout;
}
LCommand.Statement = LTableName;
LCommand.CommandType = SQLCommandType.Table;
LCommand.LockType = SQLLockType.Pessimistic;
SQLCursor LCursor = LCommand.Open(SQLCursorType.Dynamic, SQLIsolationLevel.Serializable);
try
{
SQLScalarType LScalarType;
Schema.TableVarColumn LColumn;
Schema.Key LKey = Program.FindClusteringKey(ATableVar);
#if USESEEKTOUPDATE
object[] LKeyValues = new object[LKey.Columns.Count];
for (int LIndex = 0; LIndex < LKeyValues.Length; LIndex++)
{
LColumn = ATableVar.Columns[LKey.Columns[LIndex].Name];
LScalarType = (SQLScalarType)Device.DeviceScalarTypes[LColumn.DataType];
LKeyValues[LIndex] = ARow.HasValue(LColumn.Name) ? LScalarType.ParameterFromScalar(ARow[LColumn.Name]) : null;
}
if (!LCursor.FindKey(LKeyValues))
{
throw new RuntimeException(RuntimeException.Codes.OptimisticConcurrencyCheckRowNotFound);
}
#else
StringBuilder LFilter = new StringBuilder();
IADOFilterLiteralBuilder LBuilder;
for (int LIndex = 0; LIndex < LKey.Columns.Count; LIndex++)
{
LColumn = ATableVar.Columns[LKey.Columns[LIndex].Name];
LScalarType = (SQLScalarType)Device.DeviceScalarTypes[LColumn.DataType];
LBuilder = LScalarType as IADOFilterLiteralBuilder;
if (LBuilder == null)
{
throw new ConnectionException(ConnectionException.Codes.UnsupportedSearchableCall);
}
if (LIndex > 0)
{
LFilter.Append(" and ");
}
if (ARow.HasValue(LColumn.Name))
{
LFilter.AppendFormat("[{0}] = {1}", Device.ToSQLIdentifier(LColumn), LBuilder.ToLiteral((IScalar)ARow[LColumn.Name]));
}
else
{
throw new RuntimeException(RuntimeException.Codes.OptimisticConcurrencyCheckRowNotFound);
}
}
if (!LCursor.SetFilter(LFilter.ToString()))
{
throw new RuntimeException(RuntimeException.Codes.OptimisticConcurrencyCheckRowNotFound);
}
#endif
LCursor.Delete();
}
finally
{
LCommand.Close(LCursor);
}
}
}
