3 Replies Latest reply on Nov 4, 2008 2:45 AM by Stefan Woerner

    handle arrays in bpel

    Stefan Woerner Newbie

      hello,

      i have some problems with handling arrays in my bpel-process. i have to invoke 3 web services and the response of the first one contains an array of user roles. so first i declare a variable for the iteration and also a variable for the number of elements in the array. then i create a while loop to check if the array contains a specific role. in that case i call the second web service. so far that's working fine, but the second web service returns also an array. but now i want to return this response as a part of the bpel process response. and here is my problem. How do i do that? i either get only the first element of the array as response of the bpel process or i get the following error:

      15:42:48,209 ERROR [XPathEvaluator] cannot create element for step with non-numeric predicate: [(DefaultNameStep): bpelReturnSW]
      


      how to do that array handling?

      a fragment of my bpel-file:
      <bpws:sequence name="Sequence1">
       <bpws:assign name="assignSukoInput" validate="no">
       <bpws:copy>
       <bpws:from><![CDATA['']]></bpws:from>
       <bpws:to><![CDATA[$sukoRequest.getAllUnits]]></bpws:to>
       </bpws:copy>
       </bpws:assign>
       <bpws:invoke inputVariable="sukoRequest"
       name="invokeSukoService" operation="getAllUnits"
       outputVariable="sukoResponse" partnerLink="suko"
       portType="ns1:Fidefri4amo" />
       <bpws:assign name="assignSukoCounter" validate="no">
       <bpws:copy>
       <bpws:from><![CDATA[1]]></bpws:from>
       <bpws:to variable="sukoIterator" />
       </bpws:copy>
       <bpws:copy>
       <bpws:from><![CDATA[count($sukoResponse.getAllUnitsResponse/return)]]></bpws:from>
       <bpws:to variable="sukoCounter" />
       </bpws:copy>
       </bpws:assign>
       <bpws:while name="While">
       <bpws:condition><![CDATA[$sukoCounter >= $sukoIterator]]></bpws:condition>
       <bpws:sequence name="Sequence2">
       <bpws:assign name="assignSukoOutput" validate="no">
       <bpws:copy>
       <bpws:from><![CDATA[$sukoResponse.getAllUnitsResponse/return[$sukoIterator]/id]]></bpws:from>
       <bpws:to><![CDATA[$output.bpelResponse/bpelReturnSuko[$sukoIterator]/bpelResponseSukoUnitID]]></bpws:to>
       </bpws:copy>
       <bpws:copy>
       <bpws:from><![CDATA[$sukoResponse.getAllUnitsResponse/return[$sukoIterator]/name]]></bpws:from>
       <bpws:to><![CDATA[$output.bpelResponse/bpelReturnSuko[$sukoIterator]/bpelResponseSukoUnitName]]></bpws:to>
       </bpws:copy>
       </bpws:assign>
       <bpws:assign name="stepSukoIterator" validate="no">
       <bpws:copy>
       <bpws:from><![CDATA[$sukoIterator + 1]]></bpws:from>
       <bpws:to variable="sukoIterator" />
       </bpws:copy>
       </bpws:assign>
       </bpws:sequence>
       </bpws:while>
      </bpws:sequence>
      


      thank you for your help!!!!
      greetings stefan