ManyToMany relationship not handled properly while using QueryCache .
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Key: OPENJPA-334
URL: https://issues.apache.org/jira/browse/OPENJPA-334
Project: OpenJPA
Issue Type: Bug
Components: datacache
Affects Versions: 1.0.0
Environment: Fedora 6
Java 1.5.0_11
Reporter: Ekin Sokmen
Attachments: testcase_querycache.zip
Following description is a simplified model of the issue we are facing.
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 an
existing instance of EntityB to it. Then we persists the new instance of
EntityA. Then we retrieve the instance of EntityA using OpenJPA and check the
content of it. Without QueryCache this works well. But if the query cache is
enabled the first time we get the instance of EntityA we get a properly
populated EntityA instance but the second time we try to retrieve the same
instance we get an empty set of included EntityB instance(s).
The attached test case demonstrates this issue clearly.
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