could probably just be solved with a proper equals/hashcode impl; but
custom serialization would also work but not if it influences possible
subclasses.
Hi!
I already posted on the user list, but I looks like due to the massive
posts it got lost.
I took many time to think about this issue, and so I'll post it to your
dev list as I'll eventually try to create a patch for it.
Hibernate version:
3.2.0 rc1
A serialized/deserialized DetachedCriteria do not work correctly with
the query cache.
The problem is the ResultTransformer in QueryKey.
In CriteraImpl the resultTransformer will be set to Criteria.ROOT_ENTITY.
This makes it down into the QueryKey.
After serialize/deserialize the instance of resultTransformer in
CriteriaImpl has changed (not that a surprise ;-) ) and thus - in the
end - the QueryKey changed.
Subsequent lookup in the query-cache will no longer work.
The query will be executed again and put int the query-cache.
The cache grows - every lookup failes.
I think every ResultTransformer used as singleton should implement some
custom deserialization code so that always the same instance will be
returned - this is one solution.
What solution do you prefer? Just in case I manage to send a patch.
Thanks!
Ciao,
Mario
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Max Rydahl Andersen
callto://max.rydahl.andersen
Hibernate
[EMAIL PROTECTED]
http://hibernate.org
JBoss Inc
[EMAIL PROTECTED]
-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
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