[jira] Created: (OPENJPA-348) Composite PK with association

[Eddie Man (JIRA)]

Composite PK with association
-----------------------------

                 Key: OPENJPA-348
                 URL: https://issues.apache.org/jira/browse/OPENJPA-348
             Project: OpenJPA
          Issue Type: Bug
          Components: kernel
    Affects Versions: 1.0.0
            Reporter: Eddie Man


I got an exception while using a association within a composite PK

A.java
========
@Entity
public class A {
        @Id
        public int id;
        
        @OneToMany(mappedBy="a", cascade=CascadeType.ALL)
        public HashSet<B> bs = new HashSet<B>();

}

B.java
========
@Entity
@IdClass(BPK.class)
public class B {
        
        @Id
        public int id;
        
        @Id
        @ManyToOne(cascade=CascadeType.ALL)
        @JoinColumns([EMAIL PROTECTED](name="aid")})
        public A a;
        
        @Basic
        public String name;
}

BPK.class
============
public class BPK {
        
        public int id;
        
        public int a;

        @Override
        public boolean equals(Object aObj) {
                return super.equals(aObj);
        }
        
        @Override
        public int hashCode() {
                return super.hashCode();
        }
}


Here is my code for inserting data to db:
EntityManager manager = 
Persistence.createEntityManagerFactory("openjpa").createEntityManager();
EntityTransaction transaction = manager.getTransaction();
transaction.begin();
                
A a = new A();
a.id = 1;
                
B b = new B();
b.id = 2;
b.a = a;                
                
a.bs.add(b);
                
manager.persist(a);
transaction.commit();
manager.close();

Exception :
==============
Exception in thread "main" <openjpa-1.0.0-r420667:568756 fatal general error> 
org.apache.openjpa.persistence.PersistenceException: null
        at 
org.apache.openjpa.kernel.AbstractBrokerFactory.loadPersistentTypes(AbstractBrokerFactory.java:303)
        at 
org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:197)
        at 
org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:142)
        at 
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:192)
        at 
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:145)
        at 
org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:56)
        at Test.main(Test.java:10)
Caused by: java.lang.NullPointerException
        at 
org.apache.openjpa.enhance.ManagedClassSubclasser.setDetachedState(ManagedClassSubclasser.java:275)
        at 
org.apache.openjpa.enhance.ManagedClassSubclasser.configureMetaData(ManagedClassSubclasser.java:213)
        at 
org.apache.openjpa.enhance.ManagedClassSubclasser.prepareUnenhancedClasses(ManagedClassSubclasser.java:137)
        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)
        at 
org.apache.openjpa.kernel.AbstractBrokerFactory.loadPersistentTypes(AbstractBrokerFactory.java:287)
        ... 6 more

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