[OPENJPA-1028] ClassCastException during findBy when embeddable is involved

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-M2
• Fix Version/s: 2.0.0-M2
• Assignee: Fay Wang
• Reporter: Fay Wang
• Created: 07/Apr/09 21:49
• Updated: 09/Mar/10 18:31
• Resolved: 10/Apr/09 23:20

Description

Caused by: java.lang.ClassCastException: myFvt.EmbedA incompatible with myFvt.EntityA
at myFvt.EntityB.pcReplaceField(EntityB.java)
at org.apache.openjpa.kernel.StateManagerImpl.replaceField(StateManagerImpl.java:3083)
at org.apache.openjpa.kernel.StateManagerImpl.storeObjectField(StateManagerImpl.java:2512)
at org.apache.openjpa.kernel.StateManagerImpl.storeObject(StateManagerImpl.java:2502)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.setMappedBy(JDBCStoreManager.java:453)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:384)
at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:289)
at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:111)
at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57)
at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:995)
at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:953)

This ClassCastException occurred in the following test scenario:

(1)
@Entity
public class EntityA implements Serializable {
@Id
Integer id;

@Embedded
EmbedA embedA;

...
}

(2)
@Embeddable
public class EmbedA {

@OneToOne(mappedBy="a", fetch = FetchType.EAGER, cascade = CascadeType.ALL)
EntityB entityB;

...
}

(3)
@Entity
public class EntityB {

@Id
protected int id;

@OneToOne
private EntityA a;
...
}

(4) test case:
EntityManager em = emf.createEntityManager();
EntityA a = em.find(EntityA.class, 1);