Hi, I got a problem of mapping following relationships,
Say: I have following three tables :

Table_A:
a_id (PK),
a_version (PK)
a_name

Table_B:
a_id (FK)
a_version(FK)
b_name,
..

Table_C
c_id, (PK)
c_version, (PK)
c_name,
a_id, (FK)
other_field,
...


I tried to map aid and a_version of Table_A to composite id, it worked fine with one-to-many association with Table_B. But I didn't work out mapping the association between table_A and Table_C as Table_C only has one foreign key aid.
I did try to use only aid as id in Table_A mapping file, and mapped a_verison as <verison>, but seemed not easy to map association between Table_A and Table_B.

Now I want to go for the composite id solution, any idea about how to map Table_A to Table_C? The following is the mapping file that doesn't work, I got "exception getting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info)"






Hibernate version:3.0

Mapping documents:


<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<hibernate-mapping>
<class name="ClassA" table="Table_A">

<composite-id
name="aPK"
class="test.PK"
unsaved-value="none"
>
<key-property name="aid"
type="string"
column="a_id" />
<key-property name="aVersion"
type="long"
column="a_version" />
</composite-id>

<set name="bSet"
inverse="true"
lazy="true"
cascade="save-update">
<key>
<column name="a_id" />
<column name="a_version" />
</key>
<one-to-many class="ClassB" />
</set>

<set name="cSet"
inverse="true"
lazy="true"
cascade="save-update">
<key property-ref="aid">
<column name="a_id" />
</key>

<one-to-many class="ClassC" />

</set>

</class>

</hibernate-mapping>


Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

org.hibernate.PropertyAccessException: exception getting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) getter of APK.?
at org.hibernate.tuple.PojoComponentTuplizer.getPropertyValues(PojoComponentTuplizer.java:42)
at org.hibernate.type.ComponentType.getPropertyValues(ComponentType.java:257)
at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:158)
at org.hibernate.engine.EntityKey.getHashCode(EntityKey.java:68)
at org.hibernate.engine.EntityKey.<init>(EntityKey.java:41)
at org.hibernate.engine.PersistenceContext.getCollectionOwner(PersistenceContext.java:674)
at org.hibernate.loader.Loader.readCollectionElement(Loader.java:660)
at org.hibernate.loader.Loader.readCollectionElements(Loader.java:370)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:314)
at org.hibernate.loader.Loader.doQuery(Loader.java:412)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1434)
at org.hibernate.loader.collection.OneToManyLoader.initialize(OneToManyLoader.java:111)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:488)
at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1430)
at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:176)
at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:48)
at org.hibernate.collection.PersistentSet.size(PersistentSet.java:110)
...
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:436)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:311)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.ClassCastException
at APK$$BulkBeanByCGLIB$$8f063a72_2.getPropertyValues(<generated>)
at net.sf.cglib.beans.BulkBean.getPropertyValues(BulkBean.java:48)
at org.hibernate.tuple.PojoComponentTuplizer.getPropertyValues(PojoComponentTuplizer.java:39)
... 52 more



Thanks in advance