[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5792) Unable to JOIN embedded objects in Criteria API

Unable to JOIN embedded objects in Criteria API ----------------------------------------------- Key: HHH-5792 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5792 Project: Hibernate Core Issue Type: Bug Components: entity-manager, query-criteria Affects Versions: 3.6.0 Reporter: scLee Priority: Blocker Attachments: Client.java, CriteriaApiTest.java, Name.java Exception is thrown when trying to JOIN embedded attribute in Criteria API. E.g. having the following entity: {quote} @Entity public class Client implements Serializable { @Id public int id; @Embedded public Name name; } @Embeddable public class Name implements Serializable { @Column public String firstName; @Column public String lastName; } {quote} The following code {quote} CriteriaQuery< Client > cq = cb.createQuery( Client.class ); Root< Client > root = cq.from( Client.class ); cq.where( cb.equal( root.*join*( "name" ).get( "firstName" ), "foo" ) ); {quote} throws this exception: {quote} java.lang.ClassCastException: org.hibernate.ejb.metamodel.SingularAttributeImpl cannot be cast to javax.persistence.metamodel.ManagedType at org.hibernate.ejb.criteria.path.AbstractFromImpl.locateManagedType(AbstractFromImpl.java:151) at org.hibernate.ejb.criteria.path.AbstractFromImpl.locateAttributeInternal(AbstractFromImpl.java:145) at org.hibernate.ejb.criteria.path.AbstractPathImpl.locateAttribute(AbstractPathImpl.java:216) at org.hibernate.ejb.criteria.path.AbstractFromImpl.join(AbstractFromImpl.java:449) at org.hibernate.ejb.criteria.path.AbstractFromImpl.join(AbstractFromImpl.java:433) at foo.CriteriaApiTest.embeddableInPath(CriteriaApiTest.java:45) {quote}