Re[2]: [JBoss-user] CMR Problem

[Alexey L. <al...@jb...>]

Please, provide a stacktrace for
javax.ejb.EJBException: Data contains multiple values, but this cmr
field is single valued

And also make sure you are not assigning Collection to a single valued
CMR field and the query loading the CMR field returns only one row.

alex

Thursday, June 26, 2003, 5:56:58 PM, Jason Calabrese wrote:

JC> Alexey,

JC> Thanks for the suggestion, but it didn't solve the problem.

JC> Any other ideas?

JC> Jason

JC> On Wednesday 25 June 2003 11:19 pm, Alexey Loubyansky wrote:
>> Hello Jason,
>>
>> try to remove cascade-delete for one-to-one. By the spec, it is
>> allowed only for many side.
>>
>> alex
>>
>> Thursday, June 26, 2003, 8:33:08 AM, Jason Calabrese wrote:
>>
>> JC> I'm having a weird CMR problem with 3.2.0.
>>
>> JC> I have a bean that a has 2 CMR fields that both target the same bean
>> with JC> different pk's.
>>
>> JC> One of the CMR fields is a 1:1 relation and the other is the single
>> side of a JC> 1:M relation.
>>
>> JC> The CMR fields can be read fine, but cause problems for ejbCreate.
>>
>> JC> This is the error I get:
>> JC> 2003-06-25 18:35:16,563 ERROR [org.jboss.ejb.plugins.LogInterceptor]
>> JC> TransactionRolledbackLocalException, causedBy:
>> JC> javax.ejb.EJBException: Data contains multiple values, but this cmr
>> field is JC> single valued
>> JC> ...
>> JC> 2003-06-25 18:35:16,597 ERROR [org.jboss.ejb.plugins.LogInterceptor]
>> JC> TransactionRolledbackLocalException, causedBy:
>> JC> javax.ejb.EJBException: null; CausedByException is:
>> JC>         A CMR collection may only be used within the transction in
>> which it JC> ...
>>
>> JC> If I get rid of the 1:1 CMR field (valueClass) the problem goes away.
>> Here's JC> some of the code:
>> JC> ...
>> JC>         /**
>> JC>          *  @ejb.relation
>> JC>          *              name="class-has-properties"
>> JC>          *              role-name="property-role"
>> JC>          *              cascade-delete="true"
>> JC>          *  @jboss.relation
>> JC>          *      fk-column="class_id"
>> JC>          *      related-pk-field="id"
>> JC>          *  @ejb:interface-method
>> JC>          */
>> JC>         public abstract ContentClassLocal getContentClass();
>>
>> JC>         public abstract void setContentClass(ContentClassLocal
>> contentClass);
>>
>> JC>         /**
>> JC>          *  @ejb.persistent-field
>> JC>          *  @ejb:interface-method
>> JC>          *  @jboss.column-name name="class_id"
>> JC>          */
>> JC>         public abstract String getContentClassId();
>>
>> JC>         /**
>> JC>          *  @ejb:interface-method
>> JC>          */
>> JC>         public abstract void setContentClassId(String classId);
>> JC> ...
>> JC>         /**
>> JC>          *  @ejb.relation
>> JC>          *              name="object-has-valueClass"
>> JC>          *              role-name="object-role"
>> JC>          *              target-ejb="ContentClass"
>> JC>          *              target-role-name="class-role"
>> JC>          *              cascade-delete="true"
>> JC>          *  @jboss.relation
>> JC>          *      fk-column="value_class_id"
>> JC>          *      related-pk-field="id"
>> JC>          *  @ejb:interface-method
>> JC>          */
>> JC>         public abstract ContentClassLocal getValueClass();
>>
>> JC>         public abstract void setValueClass(ContentClassLocal
>> valueClass);
>>
>> JC>         /**
>> JC>          *  @ejb.persistence
>> JC>          *  @ejb:interface-method
>> JC>          *  @jboss.column-name name="value_class_id"
>> JC>          */
>> JC>         public abstract String getValueClassId();
>>
>> JC>         /**
>> JC>          *  @ejb:interface-method
>> JC>          */
>> JC>         public abstract void setValueClassId(String dataClassId);
>>
>> JC> Any ideas?  If you need more code or more of the stack trace let me
>> know.
>>
>> JC> Thanks,
>>
>> JC> Jason