private RemoteProposeData InternalChange(RemoteRowBody oldRow, RemoteRowBody newRow, string column)
{
Row localOldRow = new Row(_plan.Process.ServerProcess.ValueManager, _serverCursor.SourceRowType);
try
{
localOldRow.ValuesOwned = false;
localOldRow.AsPhysical = oldRow.Data;
Row localNewRow = new Row(_plan.Process.ServerProcess.ValueManager, _serverCursor.SourceRowType);
try
{
localNewRow.ValuesOwned = false;
localNewRow.AsPhysical = newRow.Data;
RemoteProposeData proposeData = new RemoteProposeData();
proposeData.Success = _serverCursor.Change(localOldRow, localNewRow, column);
proposeData.Body = new RemoteRowBody();
proposeData.Body.Data = localNewRow.AsPhysical;
return(proposeData);
}
finally
{
localNewRow.Dispose();
}
}
finally
{
localOldRow.Dispose();
}
}
/// <summary>Ensures that the given row is valid.</summary>
/// <param name='oldRow'>A <see cref="Row"/> containing the original values for the row.</param>
/// <param name='newRow'>A <see cref="Row"/> containing the changed values for the row.</param>
/// <param name='columnName'>The name of the column which changed in <paramref name="newRow"/>. If empty, the change affected more than one column.</param>
/// <returns>A boolean value indicating whether any change was made to <paramref name="newRow"/>.</returns>
public bool Validate(IRow oldRow, IRow newRow, string columnName)
{
if ((_internalProcess != null) && TableVar.IsValidateCallRemotable(columnName))
{
IRow localOldRow = oldRow;
if ((oldRow != null) && oldRow.HasNonNativeValues())
{
localOldRow = new Row(_internalProcess.ValueManager, oldRow.DataType);
MarshalRow(oldRow, localOldRow);
}
IRow localNewRow = newRow;
if (newRow.HasNonNativeValues())
{
localNewRow = new Row(_internalProcess.ValueManager, newRow.DataType);
MarshalRow(newRow, localNewRow);
}
_plan._process._session._server.AcquireCacheLock(_plan._process, LockMode.Shared);
try
{
bool changed = TableNode.Validate(_internalProgram, localOldRow, localNewRow, null, columnName);
if (changed && !Object.ReferenceEquals(newRow, localNewRow))
{
MarshalRow(localNewRow, newRow);
}
return(changed);
}
finally
{
_plan._process._session._server.ReleaseCacheLock(_plan._process, LockMode.Shared);
}
}
else
{
RemoteRowBody oldBody = new RemoteRowBody();
if (oldRow != null)
{
_plan._process.EnsureOverflowReleased(oldRow);
oldBody.Data = oldRow.AsPhysical;
}
_plan._process.EnsureOverflowReleased(newRow);
RemoteRowBody newBody = new RemoteRowBody();
newBody.Data = newRow.AsPhysical;
RemoteProposeData proposeData = _cursor.Validate(oldBody, newBody, columnName, _plan._process.GetProcessCallInfo());
_plan._programStatisticsCached = false;
if (proposeData.Success)
{
newRow.ValuesOwned = false; // do not clear the overflow streams because the row is effectively owned by the server during the validate call
newRow.AsPhysical = proposeData.Body.Data;
newRow.ValuesOwned = true;
}
return(proposeData.Success);
}
}
/// <summary>Requests the default values for a new row in the cursor.</summary>
/// <param name='row'>A <see cref="Row"/> to be filled in with default values.</param>
/// <returns>A boolean value indicating whether any change was made to <paramref name="row"/>.</returns>
public bool Default(IRow row, string columnName)
{
if ((_internalProcess != null) && TableVar.IsDefaultCallRemotable(columnName))
{
// create a new row based on FInternalProcess, and copy the data from
IRow localRow = row;
if (row.HasNonNativeValues())
{
localRow = new Row(_internalProcess.ValueManager, row.DataType);
MarshalRow(row, localRow);
}
_plan._process._session._server.AcquireCacheLock(_plan._process, LockMode.Shared);
try
{
bool changed = TableNode.Default(_internalProgram, null, localRow, null, columnName);
if (changed && !Object.ReferenceEquals(localRow, row))
{
MarshalRow(localRow, row);
}
return(changed);
}
finally
{
_plan._process._session._server.ReleaseCacheLock(_plan._process, LockMode.Shared);
}
}
else
{
_plan._process.EnsureOverflowReleased(row);
RemoteRowBody body = new RemoteRowBody();
body.Data = row.AsPhysical;
RemoteProposeData proposeData = _cursor.Default(body, columnName, _plan._process.GetProcessCallInfo());
_plan._programStatisticsCached = false;
if (proposeData.Success)
{
row.ValuesOwned = false; // do not clear the overflow streams because the row is effectively owned by the server for the course of the default call.
row.AsPhysical = proposeData.Body.Data;
row.ValuesOwned = true;
}
return(proposeData.Success);
}
}
