traversing a BPEL array

Question

I need to traverse an array (input to BPEL) in java embed activity and need to generate a response (output variable) of BPEL process.

I am using Jdeveloper and SOA 11g

following is my xsd

<?xml version="1.0" encoding="UTF-8"?>
<schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://xmlns.oracle.com/BPELInpuandOutPutArray_jws/Project1/BPEL_input_output_array" xmlns="http://www.w3.org/2001/XMLSchema">
      <element name="process">
            <complexType>
                  <sequence>
                        <element name="simpleinput" type="string"/>
                        <element name="arrayofObjects" maxOccurs="unbounded" nillable="true">
                              <complexType>
                                    <sequence>
                                          <element name="input1" type="string"/>
                                          <element name="input2" type="string"/>
                                    </sequence>
                              </complexType>
                        </element>
                  </sequence>
            </complexType>
      </element>
      <element name="processResponse">
            <complexType>
                  <sequence>
                        <element name="arrayofObjectsoutput" maxOccurs="unbounded" nillable="true">
                              <complexType>
                                    <sequence>
                                          <element name="output1" type="string"/>
                                          <element name="output2" type="string"/>
                                    </sequence>
                              </complexType>
                        </element>
                  </sequence>
            </complexType>
      </element>
</schema>

so far I am able to manage for traversing in input array

oracle.xml.parser.v2.XMLElement e1=
(oracle.xml.parser.v2.XMLElement)getVariableData("inputVariable","payload","/client:process/client:arrayofObjects[1]/client:input1"); 

System.out.println(e1.getFirstChild().getNodeValue());

But my business requirement is to based on some logic set the values in output array. for this I used following sample code.

for(int i=1; i < 4 ;i++) 
{ 
setVariableData("outputVariable","payload","/client:processResponse/client:arrayofObjectsoutput['i']/client:output1",i);
setVariableData("outputVariable","payload","/client:processResponse/client:arrayofObjectsoutput['i']/client:output2",i);
}

My feeling is array would be created of length 3 and value will be settes(1,1) (2,2) (3,3) but at the output value is only (3,3) . please tell me how can i achieve the same.

sample code will be appreciated.

Answer 1

The way I did it for a similar situation was to use a transformation to create the first element and then use the bpelx:insertAfter to insert additional array elements and then set them.

<assign name="Assign_2">
      <bpelx:insertAfter>
        <bpelx:from variable="outputVariable" part="payload"
                    query="/client:ArrayManipulationProcessResponse/client:arrayofObjectsoutput"/>
        <bpelx:to variable="outputVariable" part="payload"
                  query="/client:ArrayManipulationProcessResponse/client:arrayofObjectsoutput"/>
      </bpelx:insertAfter>
      <copy>
        <from expression="'MyOutput1-Index2'"/>
        <to variable="outputVariable" part="payload"
            query="/client:ArrayManipulationProcessResponse/client:arrayofObjectsoutput[2]/client:output1"/>
      </copy>
      <copy>
        <from expression="'MyOutput2-Index2'"/>
        <to variable="outputVariable" part="payload"
            query="/client:ArrayManipulationProcessResponse/client:arrayofObjectsoutput[2]/client:output2"/>
      </copy>
</assign>