protected void ValidatePredicate(Program program, IRow row)
{
if (EnforcePredicate)
{
bool rightNodeValid = false;
try
{
RightNode.Insert(program, null, row, null, false);
rightNodeValid = true;
RightNode.Delete(program, row, false, false);
}
catch (DataphorException exception)
{
if ((exception.Severity != ErrorSeverity.User) && (exception.Severity != ErrorSeverity.Application))
{
throw;
}
}
if (rightNodeValid)
{
throw new RuntimeException(RuntimeException.Codes.RowViolatesDifferencePredicate, ErrorSeverity.User);
}
}
}
protected override void InternalExecuteDelete(Program program, IRow row, bool checkConcurrency, bool uncheckedValue)
{
if (PropagateDeleteLeft)
{
using (IRow leftRow = LeftNode.FullSelect(program, row))
{
if (leftRow != null)
{
LeftNode.Delete(program, row, checkConcurrency, uncheckedValue);
}
}
}
if (PropagateDeleteRight)
{
using (IRow rightRow = RightNode.FullSelect(program, row))
{
if (rightRow != null)
{
RightNode.Delete(program, row, checkConcurrency, uncheckedValue);
}
}
}
}
protected override void InternalExecuteUpdate(Program program, IRow oldRow, IRow newRow, BitArray valueFlags, bool checkConcurrency, bool uncheckedValue)
{
if (PropagateUpdateLeft && PropagateUpdateRight && EnforcePredicate)
{
// Attempt to update the row in the left node
try
{
if (PropagateUpdateLeft)
{
using (IRow leftRow = LeftNode.FullSelect(program, oldRow))
{
if (leftRow != null)
{
LeftNode.Delete(program, oldRow, checkConcurrency, uncheckedValue);
}
}
LeftNode.Insert(program, oldRow, newRow, valueFlags, uncheckedValue);
}
}
catch (DataphorException exception)
{
if ((exception.Severity == ErrorSeverity.User) || (exception.Severity == ErrorSeverity.Application))
{
if (PropagateUpdateRight)
{
using (IRow rightRow = RightNode.FullSelect(program, oldRow))
{
if (rightRow != null)
{
RightNode.Delete(program, oldRow, checkConcurrency, uncheckedValue);
}
}
RightNode.Insert(program, oldRow, newRow, valueFlags, uncheckedValue);
}
return;
}
throw;
}
// Attempt to update the row in the right node
try
{
if (PropagateUpdateRight)
{
using (IRow rightRow = RightNode.FullSelect(program, oldRow))
{
if (rightRow != null)
{
RightNode.Delete(program, oldRow, checkConcurrency, uncheckedValue);
}
}
RightNode.Insert(program, oldRow, newRow, valueFlags, uncheckedValue);
}
}
catch (DataphorException exception)
{
if ((exception.Severity != ErrorSeverity.User) && (exception.Severity != ErrorSeverity.Application))
{
throw;
}
}
}
else
{
if (PropagateUpdateLeft)
{
LeftNode.Update(program, oldRow, newRow, valueFlags, checkConcurrency, uncheckedValue);
}
if (PropagateUpdateRight)
{
RightNode.Update(program, oldRow, newRow, valueFlags, checkConcurrency, uncheckedValue);
}
}
}