ManyToMany relationship not handled properly while using DataCache.
-------------------------------------------------------------------
Key: OPENJPA-333
URL: https://issues.apache.org/jira/browse/OPENJPA-333
Project: OpenJPA
Issue Type: Bug
Components: datacache
Affects Versions: 1.0.0
Environment: Linux Fedora 6 2.6.22.1-32.fc6
Java SE 1.5.0_11
Reporter: Ekin Sokmen
Fix For: 0.9.0
We are implementing WS-methods using POJOs and OpenJPA. Following description
is a simplified model of the issue we are facing. There is also a test case
attached which demonstrates the described problem.
Assume that we have 2 entities EntityA and EntityB in ManyToMany relationship.
We are going to create a new instance of EntityA and add an existing instance
of EntityB to it. We are creating a new POJO instance of EntityA and add a
fully populated offline instance of EntityB to it. This instance of EntityA is
serialized and sent to the server where we are just doing "persist" on this
entity. Without DataCache this is working fine.
If we enable DataCache and create a new instance of EntityA as described above
the entity is persisted successfully but if we retrieve the instance using
OpenJPA we get the instance of EntityA but the list of EntityB is not populated
properly, which means we have a set of EntityB which is not null and the size
is >0 but the content is just null.
As a hint: if we debug the code we end up just after commit of new instance
where the cache is updated. The enhanced method "pcFetchObjectId" of EntityB is
called but the EntityB is a detached object so it returns null and the list of
EntityB in EntityA consists of a list of nulls.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
