[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3704) Criteria Query on property of sandwich-like @MappedSuperclass fails. HQL works

[Antoine Herzog (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32159#action_32159 ] 

Antoine Herzog commented on HHH-3704:
-------------------------------------

Oups....
I have found the proper way to do this.

use an alias for direct access to the related entity.

order clause is on : commonInfo_shipFlag.name
(commonInfo_shipFlag is the alias).
and it works...

idem for the filter : use the alias in the criteria for the where clause.

*******************
May be this is a way to solve the problem for the MappedSuperclasses
I don't know, but it may work...
that would explain why the HQL works, but not the Criteria

*******************
parsing and decoding of : a.b.c.d for the properties would be a nice feature.
using some alias is a bit more complex (must remind the alias to build the filter clause... not easy for query automatic generation).
is this possible ?
there is a problem to decode several level of entities/properties ?

*******************
sorry for the unproper comments on this Jira.
Antoine



> Criteria Query on property of sandwich-like @MappedSuperclass fails. HQL works
> ------------------------------------------------------------------------------
>
>                 Key: HHH-3704
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3704
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: query-criteria
>    Affects Versions: 3.3.1
>         Environment: hibernate 3.3.1, mysql 5.0.45
>            Reporter: Christian kalkhoff
>            Priority: Minor
>
> I have a hierarchy of @MappedSuperclasses, in my case:
> @MappedSuperclass class BaseEntity{...}
> @MappedSuperclass class NamedBaseEntity extends BaseEntity {...}
> @Entity class ConcreteEntity extends NamedBaseEntity {...}
> @Entity class AggregatingOtherEntity extends NamedBaseEntity {
>     ConcreteEntity concreteEntity;
> }
> BaseEntity holds property "id", NamedBaseEntity holds property "name". ConcreteEntity might have property "moonphase".
> If I create a Criteria search expression on AggregatingOtherEntity like
> eq("concreteEntity.id", 1L)
> that works.
> eq("concreteEntity.moonphase", "half decending") works either.
> BUT
> like("concreteEntity.name", "foobar")
> raises QueryException: 
> org.hibernate.QueryException: could not resolve property: concreteEntity.name of: AggregatingOtherEntity
> 	org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:67)
> 	org.hibernate.persister.entity.AbstractPropertyMapping.toColumns(AbstractPropertyMapping.java:82)
> 	org.hibernate.persister.entity.BasicEntityPropertyMapping.toColumns(BasicEntityPropertyMapping.java:54)
> 	org.hibernate.persister.entity.AbstractEntityPersister.toColumns(AbstractEntityPersister.java:1377)
> 	org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumns(CriteriaQueryTranslator.java:457)
> 	org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumnsUsingProjection(CriteriaQueryTranslator.java:417)
> 	org.hibernate.criterion.SimpleExpression.toSqlString(SimpleExpression.java:68)
> 	org.hibernate.criterion.LogicalExpression.toSqlString(LogicalExpression.java:62)
> 	org.hibernate.loader.criteria.CriteriaQueryTranslator.getWhereCondition(CriteriaQueryTranslator.java:357)
> 	org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:113)
> 	org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:82)
> 	org.hibernate.loader.criteria.CriteriaLoader.<init>(CriteriaLoader.java:91)
> 	org.hibernate.impl.SessionImpl.list(SessionImpl.java:1577)
> 	org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
> 	[...]
> If I refactor the Criteria search to plain HQL (From AggregatingOtherEntity Where concreteEntity.name like 'half decending') it works. So there is a workaround.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira