Hello,
I use LCDS 2.6 and JBoss 4.2.2, I start to work with these technologies and have a problem with the data mapping between java and actionscript. I will try to be as clear as possible to express my problem : Server side, I use the java.util.Vector class and my design is OBECT_A extends Vector<OBJECT_B> OBJECT_B /*this object has an attribute called anObjectDList with the type OBJECT_C*/ OBJECT_C extends Vector<OBJECT_D> OBJECT_D If from the client side I use the arraycollection type, this mean that anObjectDList is not like an OBJECT_C type and the fill method fill an object that is an ArrayCollection and not an OBJECT_A type. Then, everything happened well, but I loose all my design. In fact the OBJECT_A and OBJECT_B type are no more useful in the client side. Then what I did is to extends the OBJECT_A et OBJECT_C to the ArrayCollection. But now the problem occurs, I can see the content of the Object_A and Object_B, but the Object_C is now empty. There is a conversion error : conversion from mx.collections::ArrayCollection to test.datamodel.OBJECT_C impossible Does it mean that the mapping could not exist with object extended from ArrayCollection ? DO we have to use strictly the ArrayCollection type, I mean no inherited classes from this type ? Thanks for your answer.