Hibernate version:
3.0

I am having an issue using List collection:

Class Junk{
...

ArrayList junkUsers = new ArrayList();
/**
* @return Returns the junkUsers.
*
* @hibernate.list
* lazy="false"
* table="junkuser"
* cascade="all-delete-orphan"
* @hibernate.collection-key
* column="id"
* @hibernate.collection-index
* column="position"
* @hibernate.collection-element
* column="userName"
* type="string"
* length="256"
*/
public ArrayList getJunkUsers() {
return junkUsers;
}
public void addJunkUser(String junkUser) {
this.junkUsers.add(junkUser);
}
public void setJunkUsers(ArrayList junkUsers) {
this.junkUsers = junkUsers;
}
...
}

I am trying to persist a Junk instance:

junk.addJunkUser("testUser");
dao.saveJunk(junk);

I am getting this error when doing unit test:

[junit] Testcase: testGetJunk(com.amazand.dao.JunkDAOTest): Caused an ERROR
[junit] exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.amazand.model.Junk.setJunkUsers; nested exception is org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.amazand.model.Junk.setJunkUsers
[junit] org.springframework.orm.hibernate3.HibernateSystemException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.amazand.model.Junk.setJunkUsers; nested exception is org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.amazand.model.Junk.setJunkUsers
[junit] org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.amazand.model.Junk.setJunkUsers
[junit] at org.hibernate.tuple.PojoTuplizer.setPropertyValuesWithOptimizer(PojoTuplizer.java:203)
[junit] at org.hibernate.tuple.PojoTuplizer.setPropertyValues(PojoTuplizer.java:173)
[junit] at org.hibernate.persister.entity.BasicEntityPersister.setPropertyValues(BasicEntityPersister.java:2900)
[junit] at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
[junit] at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:506)
[junit] at org.hibernate.loader.Loader.doQuery(Loader.java:415)
[junit] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:210)
[junit] at org.hibernate.loader.Loader.loadEntity(Loader.java:1307)
[junit] at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:141)
[junit] at org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:126)
[junit] at org.hibernate.persister.entity.BasicEntityPersister.load(BasicEntityPersister.java:2461)
[junit] at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:392)
[junit] at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:373)
[junit] at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:155)
[junit] at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:209)
[junit] at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:121)
[junit] at org.hibernate.impl.SessionImpl.get(SessionImpl.java:577)
[junit] at org.hibernate.impl.SessionImpl.get(SessionImpl.java:572)
[junit] at org.springframework.orm.hibernate3.HibernateTemplate$1.doInHibernate(HibernateTemplate.java:386)
[junit] at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:310)
[junit] at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:380)
[junit] at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:375)
[junit] at com.amazand.dao.hibernate.JunkDAOHibernate.getJunk(JunkDAOHibernate.java:41)
[junit] at com.amazand.dao.JunkDAOTest.testGetJunk(JunkDAOTest.java:53)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[junit] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[junit] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[junit] Caused by: net.sf.cglib.beans.BulkBeanException: org.hibernate.collection.PersistentList
[junit] at com.amazand.model.Junk$$BulkBeanByCGLIB$$82ec866e.setPropertyValues(<generated>)
[junit] at org.hibernate.tuple.PojoTuplizer.setPropertyValuesWithOptimizer(PojoTuplizer.java:200)
[junit] ... 38 more
[junit] Caused by: java.lang.ClassCastException: org.hibernate.collection.PersistentList
[junit] ... 40 more


Any idea? I set hibernate.cglib.use_reflection_optimizer=false but it did not give me more info.

Please read the reference guide. You must use a List in your getter setter dignature, not an ArrayList

Thanks. That's the reason.