[cdi-dev] [JBoss JIRA] (CDI-144) Support Injection into Entity Listeners

Wed Aug 22 11:50:14 EDT 2012

    [ https://issues.jboss.org/browse/CDI-144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713102#comment-12713102 ] 

Jens Schumann edited comment on CDI-144 at 8/22/12 11:49 AM:
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Since I have been running into this issue lately: JPA does not recommend EntityManager interactions within JPA lifecycle callbacks*. Shouldn't we add a note somewhere that injected resources require special attention regarding JPA compliance? And because of that firing CDI events from a JPA entity listener is particularly dangerous?

In my case I tried to implement global available created/updated/deleted entity events which turned out to be an bad idea if implemented on EntityListener level.

* JPA Spec 3.5.2: In general, the lifecycle method of a portable application should not invoke EntityManager or Query operations, access other entity instances, or modify relationships within the same persistence context.[45] A lifecycle callback method may modify the non-relationship state of the entity on which it is invoked.

      was (Author: french_c):
    Since I have been running into this issue lately: JPA does not recommend EntityManager interactions within JPA lifecycle callbacks. Shouldn't we add a note somewhere that injected resources require special attention regarding JPA compliance? And because of that firing CDI events from a JPA entity listener is particularly dangerous?

In my case I tried to implement global available created/updated/deleted entity events which turned out to be an bad idea if implemented on EntityListener level.

> Support Injection into Entity Listeners
> ---------------------------------------
>
>                 Key: CDI-144
>                 URL: https://issues.jboss.org/browse/CDI-144
>             Project: CDI Specification Issues
>          Issue Type: Tracker
>    Affects Versions: 1.0
>            Reporter: Cody Lerum
>            Assignee: Pete Muir
>             Fix For: 1.1 (Proposed)
>
>
> It would be very convenient if CDI was available inside JPA Entity Listeners. 

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