tree f773497c3e08c5a1e6ef7ee350c65f0f28cbfc01
parent cdba3ea1e17ce1438b428051e42621cfd6a18b81
author Shawn O. Pearce <sop@google.com> 1231952832 -0800
committer Shawn O. Pearce <sop@google.com> 1231956412 -0800

Throw OrmConcurrencyException when optimistic locking fails

If an entity is using @RowVersion to protect itself from concurrent
updates we may be able to detect concurrent updates when the UPDATE
SQL returns 0 rows affected.  In such a case the caller may need to
handle the exception specially by retrying the operation.

Signed-off-by: Shawn O. Pearce <sop@google.com>