[jboss-user] [JBossWS] - Problem marshalling data from a List

[gryffin]

I have a problem sending a list of item to a client.
I send an object, which contains a member that itself stores a list of device objects. These objects store a member that is either a tag or a network device. ( I don't get to define the WSDL or Schema. )

I confirm that my List object does store a collection of devices which each in turn have a tag. 

  |      13:58:54,126 DEBUG [AssociationValuesDAO] Device.deviceList: 
  |      [com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 18a5d49, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at f2a0ef, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 123b9c1, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 786e16, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 838143, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 19b7dfa, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 16bb63e, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 89e0c6, 
  |      com.boeing.nmt.types.DeviceData$Device$AeroScoutTag at 3fcfb]
  | 
I send this across the wire ( server and client are local ). I unpack it and everything works great Until I try to access the tags inside the device objects in the List.

They're NULL. 

  |      [java] device list: [com.boeing.nmt.client.ws.DeviceData$Device at 102a0a5, com.boeing.nmt.client.
  | ws.DeviceData$Device at 180b22e, com.boeing.nmt.client.ws.DeviceData$Device at 31fb31, com.boeing.nmt.clie
  | nt.ws.DeviceData$Device at 162522b, com.boeing.nmt.client.ws.DeviceData$Device at 89dd, com.boeing.nmt.cli
  | ent.ws.DeviceData$Device at 15b1773, com.boeing.nmt.client.ws.DeviceData$Device at 160bf50, com.boeing.nmt
  | .client.ws.DeviceData$Device at b05236, com.boeing.nmt.client.ws.DeviceData$Device at 1e55794]
  |      [java] device list size: 9
  |      [java] dev[1]: com.boeing.nmt.client.ws.DeviceData$Device at 102a0a5
  |      [java] Exception! java.lang.NullPointerException 
  |      
I trigger the exception this way:


  | 	    List <DeviceData.Device>  devList = aagr.getAssociationValues().getDeviceData().getDevice();
  | 	    System.out.println("device list: " + devList.toString() );
  | 	    System.out.println("device list size: " + devList.size() );
  | 	    // devList.toArray()[0] is a DeviceData.Device.Tag object, for whatever reason, it's NULL
  | 	    System.out.println("dev[1]: " + devList.toArray()[0].toString()); 
  | 	    System.out.println("dev[1]: " + ((DeviceData.Device)devList.toArray()[0]).toString());
  | 	 
   
I look back at the logs to see what JBoss is unmarshalling, and it looks fine.

2007-06-08 13:58:54,158 DEBUG [org.jboss.ws.core.soap.ObjectContent] xmlFragment: [source=
  | <Results xmlns:ns2="http://www.boeing.com/NLS/ns/Types" xmlns:ns3="http://www.boeing.com/NLS/ns/soapTypes" Version="0.3.0">
  | 	<ns3:AssociationReturnCode>
  | 		<ns3:Success>true</ns3:Success>
  | 		<ns3:Reason>Dumb luck</ns3:Reason>
  | 	</ns3:AssociationReturnCode>
  | 	<ns3:AssociationValues DeleteOtherDeviceAssociations="false" CreateDeviceAssociations="NONE">
  | 		<ns3:DeviceData Version="0.3.0">
  | 			<ns2:Device xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns2:AeroScoutTag" 		MacId="000CCC654323">
  | 				<ns2:BatteryStatus>Unknown
  | 				</ns2:BatteryStatus>
  | 			</ns2:Device>
  | 			...
  | 		</ns3:DeviceData>
  | 		<ns3:AssetData Version="0.3.0" OwnerAppId="foo" AssetId="fah">
  | 			<ns2:AssetDisplayName>gah</ns2:AssetDisplayName>
  | 			<ns2:AssetDescription>fah</ns2:AssetDescription>
  | 			<ns2:AssetSuspended>true</ns2:AssetSuspended>
  | 		</ns3:AssetData>
  | 	</ns3:AssociationValues>
  | </Results>
  | ]
  | 2007-06-08 13:58:54,158 DEBUG [org.jboss.ws.core.soap.SOAPContentElement] -----------------------------------
  | 2007-06-08 13:58:54,220 DEBUG [org.jboss.ws.core.soap.MessageContextAssociation] popMessageContext: org.jboss.ws.core.jaxws.handler.SOAPMessageContextJAXWS at 131a24c (Thread http-0.0.0.0-8080-2)

I'm using JBoss 4.0.5 w/ JBossWS 1.2.0. Does anyone have an idea what am I missing?


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