hi!
i'm using ojb 0.9.6 and don't get collection proxies running. whenever i 
want to use one, i get a 


java.lang.IllegalArgumentException
        at 
sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:63)
        at java.lang.reflect.Field.set(Field.java:519)
        at 
org.apache.ojb.broker.metadata.PersistentFieldDefaultImpl.set(PersistentFieldDefaultImpl.java:136)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.retrieveCollection(PersistenceBrokerImpl.java:923)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.retrieveCollections(PersistenceBrokerImpl.java:949)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getDBObject(PersistenceBrokerImpl.java:1319)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getObjectByIdentity(PersistenceBrokerImpl.java:1430)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getReferencedObject(PersistenceBrokerImpl.java:1051)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.retrieveReference(PersistenceBrokerImpl.java:859)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.retrieveReferences(PersistenceBrokerImpl.java:840)
        at 
org.apache.ojb.broker.accesslayer.RsIterator.getObjectFromResultSet(RsIterator.java:411)
        at 
org.apache.ojb.broker.accesslayer.RsIterator.next(RsIterator.java:197)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java:1097)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java:1219)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java:1245)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java:1232)
        at 
org.apache.ojb.broker.singlevm.PersistenceBrokerImpl.getObjectByQuery(PersistenceBrokerImpl.java:1465)

has anyone experiences with collection proxies (especially in 
client/server)?

juergen

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