[jboss-jira] [JBoss JIRA] Updated: (JBRULES-2714) Drools Persistence Should Not Rely on an Existing Named Query in "META-INF/orm.xml"

Thu Apr 21 18:46:18 EDT 2011

     [ https://issues.jboss.org/browse/JBRULES-2714?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kris Verlaenen updated JBRULES-2714:
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    Component/s: drools-core (flow)


> Drools Persistence Should Not Rely on an Existing Named Query in "META-INF/orm.xml"
> -----------------------------------------------------------------------------------
>
>                 Key: JBRULES-2714
>                 URL: https://issues.jboss.org/browse/JBRULES-2714
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core (flow)
>    Affects Versions: 5.1.1.FINAL
>         Environment: N/A
>            Reporter: Anatoly Polinsky
>            Assignee: Kris Verlaenen
>              Labels: drools_persistence
>   Original Estimate: 1 hour
>  Remaining Estimate: 1 hour
>
> There is a named query "ProcessInstancesWaitingForEvent" that lives in a drools persistence jar under "META-INF/orm.xml". 
> The problem is not even that the query is wrong ( org.hibernate.QueryException: cannot dereference scalar collection element.. ), but that majority of applications that sit on top of JPA rely on its own mappings, and hence this query either:
>  
>    1. Lost, since the custom "persistence.xml" will redefine the path to other mapping files
>    2. Will result in "Duplicate query mapping" exception if defined in a custom mapping file ( http://opensource.atlassian.com/projects/hibernate/browse/HHH-4152 )
> Would be more logical not to depend that everyone knows to look inside "drools persistence jar", and to have an extensive documentation explaining "ProcessInstancesWaitingForEvent". It maybe hardcoded through @NamedQuery or just be available as an OPTIONAL file to use by Drools clients: e.g. "<mapping-file>META-INF/persistence/mapping/drools/drools-named-queries.xml</mapping-file>" ( and again: documented.. )
> /Anatoly

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