4:13 p.m.
Tuple selection with JPA 2.0 Criteria API fails (java.lang.ClassCastException:
org.hibernate.ejb.criteria.expression.CompoundSelectionImpl cannot be cast to
org.hibernate.ejb.criteria.expression.ExpressionImplementor)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Key: HHH-5023
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5023
Project: Hibernate Core
Issue Type: Bug
Components: core
Affects Versions: 3.5.0-CR-2
Environment: Hibernate 3.5.0-CR-2
PostgreSQL 8.4.1
Glassfish v3 (build 74.2)
JDK 1.6.0_18
Reporter: atomicknight
Attachments: jpa-test-eclipselink.war, jpa-test-hibernate.war, test.sql
Attempting to select a Tuple using the JPA 2.0 Criteria API throws a ClassCastException.
Example Java code:
{noformat}
public List<Tuple> selectTuple1( ) {
CriteriaBuilder cb = em.getCriteriaBuilder( );
CriteriaQuery<Tuple> cq = cb.createTupleQuery( );
Root<TestEntity2> e2 = cq.from( TestEntity2.class );
cq.multiselect( e2.get( "id" ), e2.get( "value" ) );
TypedQuery<Tuple> query = em.createQuery( cq );
return query.getResultList( );
}
{noformat}
Example stack trace:
{noformat}
javax.ejb.EJBException
at com.sun.ejb.containers.BaseContainer.processSystemException(BaseContainer.java:5070)
at com.sun.ejb.containers.BaseContainer.completeNewTx(BaseContainer.java:4968)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4756)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1955)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1906)
at
com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:198)
at
com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:84)
at $Proxy297.selectTuple1(Unknown Source)
at com.example.__EJB31_Generated__JPABean__Intf____Bean__.selectTuple1(Unknown Source)
at com.example.JPAServlet.doGet(JPAServlet.java:35)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
...
Caused by: java.lang.ClassCastException:
org.hibernate.ejb.criteria.expression.CompoundSelectionImpl cannot be cast to
org.hibernate.ejb.criteria.expression.ExpressionImplementor
at org.hibernate.ejb.criteria.QueryStructure.render(QueryStructure.java:220)
at org.hibernate.ejb.criteria.CriteriaQueryImpl.render(CriteriaQueryImpl.java:338)
at
org.hibernate.ejb.criteria.CriteriaQueryCompiler.compile(CriteriaQueryCompiler.java:102)
at
org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:158)
at
com.sun.enterprise.container.common.impl.EntityManagerWrapper.createQuery(EntityManagerWrapper.java:489)
at com.example.JPABean.selectTuple1(JPABean.java:39)
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:597)
...
{noformat}
Other variations such as the following also throw the same exception:
{noformat}
cq.select( cb.tuple( e2.get( "id" ), e2.get( "value" ) ) );
{noformat}
The same code works without issue using the EclipseLink persistence provider bundled with
Glassfish v3.
The test code is included in the attached WAR files. The two WAR files are identical
except for the persistence provider configuration in persistence.xml. A dump of the
PostgreSQL database is also included.
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