Issue with FetchAttribute recursionDepth
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Key: OPENJPA-911
URL: https://issues.apache.org/jira/browse/OPENJPA-911
Project: OpenJPA
Issue Type: Bug
Affects Versions: 1.2.0
Environment: JDK: Sun 1.6
Database: Derby 10.2.2.0
OS: Windows XP
Reporter: Brian Dellert
I am attempting to leverage the recursionDepth FetchAttribute on a couple of
related JPA entity classes, but OpenJPA does not seem to be honoring the value
in a certain scenario. Even if I specify a recursionDepth of 50, a load of the
object graph is only returning a recursionDepth of 1 in this scenario.
The issue I'm seeing manifests itself when there is a 'container' class which
has a OneToOne reference to an 'entity' class, and the 'entity' class has a
OneToMany recursive self-reference . Here, when I first create an object graph
where an instance of the 'container' class references a 3 level entity graph, I
can save the graph and then load the graph and the specified recursionDepth is
being honored. If I then delete the 'container' object (which cascades the
delete to the 'entity' graph), the delete occurs correctly. But, if I then
create/save a new graph of objects, the subsequent load of this new graph does
not honor the recursionDepth. I have explicitly added the relevant FetchGroups
to the entity manager FetchPlan.
It should be noted that I needed to specify FetchGroups on both the OneToOne
and OneToMany references described above in order to get the initial load of
the graph to succeed. Also, it should be noted that this seemed to work
correctly with OpenJPA 1.0.0.
The attached jar file contains a simple JUnit test case which illustrates this
behavior. The test case can be run using maven by unjarring the attached file
and running:
mvn install
in the openjpa_recursion_test/ directory. There are comments in the test code
which further describe the issue. If any additional information is needed,
please let me know. Thanks.
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