Typically useful for handling DuplicateKeyException where we expect
DuplicateKeyException to be thrown and catch it with the intention of
continuing processing using the same transaction.
Note that some databases like Oracle do not require this explicit
rollback() and would work without the rollbackAndContinue(). Postgres
in particular requires the rollback() call on the underlying connection
such that we can continue using that transaction/java.sql.Connection.
Note that in the existing test we can see that rollbackAndContinue()
is pretty close to being syntactic sugar. I think adding rollbackAndContinue()
is justified and complements the existing commitAndContinue().
The reason for this is that as part of DefaultOrmQuery.copy() it uses
DefaultExpressionList.copy() and that assumed that expressions were
safe to share which is NOT the case for IN and EXISTS sub-query expressions
so InQueryExpression and ExistsQueryExpression
The effective fix for this is that DefaultExpressionList.copy() changes
to call SpiExpression.copy() and for InQueryExpression and ExistsQueryExpression
to implement that copy() by creating a copy of the sub-query.
A "side-fix" is that in DefaultOrmQuery.createExtraJoinsToSupportManyWhereClause()
it was creating an instance of ManyWhereJoins, then mutating it ... and if we
change that to only doing the assignment at the end (object assignment is atomic)
then racy access reading ManyWhereJoins would always get a fully completed non-mutating
instance of ManyWhereJoins. Noting this because it kind of points to where I think
the race condition is (in createExtraJoinsToSupportManyWhereClause()) but noting that
with the change to DefaultExpressionList.copy() this "side-fix" isn't required per say.
Moves the joda-time ScalarTypes into a new ebean-joda-time module. Include
the ebean-joda-time module in the classpath, and the extra types will be
service loaded (by DefaultTypeManager).
- Batched JDBC SQLException translation - Need to dig into nested exception to get cause error state
- SqlRow BLOB reading - BLOB can come as LONGVARBINARY (TestRawSqlBuilder)
- Fix test for history using system time (TestHistoryInsert)
- Fix SqlQueryCancelTest
- Fix TestSqlUpdateExceptions
- Beans created from JSON default to disableLazyLoad true
- Explicitly use new JsonReadOptions().setEnableLazyLoading(true) when lazy loading is needed
Rob Bygrave