camel-jpa doesn't use EntityManager.merge(entity) in the right way
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Key: CAMEL-2980
URL: https://issues.apache.org/activemq/browse/CAMEL-2980
Project: Apache Camel
Issue Type: Bug
Components: camel-jpa
Affects Versions: 2.4.0
Environment: All
Reporter: Christian Mueller
Assignee: Christian Mueller
Fix For: 2.5.0
The EntityManager.merge(entity) method returns the merged entity. The exchange
in message body should be updated with the merged entity (what camel-jpa
currently not do).
I running into this problem, because after saving an entity in the database,
the id field was still null. So, we don't know, which entity in the database is
the corresponding to this entity... :-(
Have a look in the process method of
[JpaProducer|http://svn.apache.org/viewvc/camel/trunk/components/camel-jpa/src/main/java/org/apache/camel/component/jpa/JpaProducer.java?view=markup]
and the Java doc from the
[EntityManager|http://download.oracle.com/docs/cd/E17477_01/javaee/5/api/javax/persistence/EntityManager.html#merge%28T%29].
Christian
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