Problem serializing DistinctResultList when EntityManager is closed
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Key: OPENJPA-1722
URL: https://issues.apache.org/jira/browse/OPENJPA-1722
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 2.1.0
Reporter: Dianne Richards
Assignee: Dianne Richards
Fix For: 2.1.0
A client application that worked earlier is now failing in 2.10, relating to
the serialization of the DistinctResultList. It does a distinct query followed
by a getResultList(). A DistinctResultList is returned from the query, where a
DelegatingResultList used to be returned. The EntityManager is closed before
the serialization occurs. It fails with the exception:
org.apache.openjpa.persistence.InvalidStateException: The context has been
closed.
Here's what is happening: The DistinctResultList contains a
RuntimeExceptionTranslator object which contains the closed EntityManager. The
writeObject() in the enclosed BrokerImpl does an assertOpen(), which issues the
exception.
The DelegatingResultList also contains the RuntimeExceptionTranslator. But, it
contains a writeResult() method which is called during serialization. This only
attempts to write the ResultList object, not the RuntimeExceptionTranslator
object.
So, I will add the writeResult() method to the DistinctResultList class. In
this case, it will write an ArrayList instead of a ResultList object. This
should be ok since the method signature is for a List.
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