Ooops, the message didn't display as I thought. I try to post it more clearly:
I'm developing a FDS application with database connection and I've mapped the relational database to POJO's with Hibernate (using hibernate tools). In the relational database, I have a table which maps a N:M relationship between two entities and this table has a composite primary key as the following example shows: MODEL id engine cab bed ... MODEL_PACK id_model id_pack inclusion PACK id name category id_model and id_pack is the composite primary key of MODEL_PACK table. Hibernate tools generates a specific class which contains the composite primary key. When I try to access to a row from PACK table through an object which maps MODEL table using MODEL_PACK I get the following exception: [RPC Fault faultString="Unable to invoke a get operation on destination 'ModelsPacks.hibernate' due to the following error: class org.hibernate.PropertyAccessException:exception getting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) getter of com.fds.proyecto.hibernate.ModelPackId.?." faultCode="Server.Processing" faultDetail="null"] at mx.data::ConcreteDataService/http://www.adobe.com/2006/flex/mx/interna l::dispatchFaultEvent() [C:\dev\enterprise_bali\frameworks\mx\data\ConcreteDataService.as:1602 ] at ConcreteDataService.as$76::DataListRequestResponder/fault() [C:\dev\enterprise_bali\frameworks\mx\data\ConcreteDataService.as:4453 ] at mx.rpc::AsyncRequest/fault() [C:\dev\enterprise_bali\frameworks\mx\rpc\AsyncRequest.as:107] at NetConnectionChannel.as$40::NetConnectionMessageResponder/NetConnectio nChannel.as$40:NetConnectionMessageResponder::statusHandler() [C:\dev\enterprise_bali\frameworks\mx\messaging\channels\NetConnection Channel.as:470] at mx.messaging::MessageResponder/status() [C:\dev\enterprise_bali\frameworks\mx\messaging\MessageResponder.as:22 5] I have the following classes in Action Script: Model id:int; engine:string; ... packs:ArrayCollection; ModelPack id:ModelPackId; model:Models; pack:Packs; inclusion:String; Pack id:String; category:String; ... models:ArrayCollection; Which correspond to the appropriate classes in java. ModelPackId is a class that represents the composite primary key of the MODEL_PACK table: modelCode:int; packCode:String; public function toString():String { return modelCode + ":" + packCode; } Having an object of type model: m:Model; I get the error when I try: m.packs.getItemAt(1).pack In the data-management-config.xml I have three destinations; models.hibernate, ModelsPacks.hibernate and packs.hibernate: <destination id="models.hibernate"> ........... <one-to-many property="packs" destination="ModelsPacks.hibernate" lazy="true"/> ........... <destination id="ModelsPacks.hibernate"> ............ <identity property="id" type="com.fds.proyecto.hibernate.ModelPackId"/> <many-to-one property="model" destination="models.hibernate" lazy="true"/> <many-to-one property="pack" destination="packs.hibernate" lazy="true"/> ............. <destination id="packs.hibernate"> ............. <one-to-many property="models" destination="ModelsPacks.hibernate" lazy="true"/> .............. I've tried a lot of solutions but they didn't work. I hope that anyone can help me. Thanks in advance, Carlos

