[jira] Resolved: (CAMEL-2980) camel-jpa doesn't use EntityManager.merge(entity) in the right way

["Christian Mueller (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/activemq/browse/CAMEL-2980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Mueller resolved CAMEL-2980.
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    Resolution: Fixed

> camel-jpa doesn't use EntityManager.merge(entity) in the right way
> ------------------------------------------------------------------
>
>                 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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