[hibernate-issues] [Hibernate-JIRA] Created: (EJB-277) allow string values for query hints

[Norman Richards (JIRA)]

allow string values for query hints
-----------------------------------

         Key: EJB-277
         URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-277
     Project: Hibernate Entity Manager
        Type: Improvement

    Reporter: Norman  Richards


It seems that some string values are not accepted as query hint values in hibernate.  In specific, I was trying to convert a simple query that uses setHint("org.hibernate.cacheable", true) to use an XML-defined EntityQuery that uses 

    <framework:entity-query name="allCategories"
                            ejbql="select c from Category c"
                            order="c.name">
       <framework:hints>
            <key>org.hibernate.cacheable</key>
            <value>true</value>
        </framework:hints>
    </framework:entity-query>    

   Unfortunately, this fails with an IllegalArgumentException:

Caused by: java.lang.IllegalArgumentException: Value for hint
        at org.hibernate.ejb.QueryImpl.setHint(QueryImpl.java:160)
        at org.jboss.seam.framework.EntityQuery.createQuery(EntityQuery.java:114)
        at org.jboss.seam.framework.EntityQuery.getResultList(EntityQuery.java:41)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        ...

Although I didn't try it, I would assume this would also fail from a @QueryHint in on a named query since that annotation only accepts a string 
value.

I don't think this is technically a bug, but it would be very convenient if all the hints could accept string values.







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