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https://issues.apache.org/jira/browse/OPENJPA-348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524971
]
Eddie Man commented on OPENJPA-348:
-----------------------------------
Actually, I haven't apply any enhancement on the class.
Here is the output after added the log property:
35 openjpa INFO [main] openjpa.Runtime - Starting OpenJPA 1.0.0
159 openjpa INFO [main] openjpa.jdbc.JDBC - Using dictionary class
"org.apache.openjpa.jdbc.sql.MySQLDictionary".
340 openjpa INFO [main] openjpa.Enhance - Creating subclass and redefining
methods for "[class A, class B]". This means that your application will be less
efficient than it would if you ran the OpenJPA enhancer.
673 openjpa TRACE [main] openjpa.Enhance - Enhancing type "class A".
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:9)
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
> 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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