How to query a collection for a particular feild value

Question

I have a service called as RevenueItemsService and iam calling the below operation:
<wsdl:operation name="GetRevenueItems">
<wsdl:input message="tns:GetRevenueItemsSoapIn" />
<wsdl:output message="tns:GetRevenueItemsSoapOut" />
</wsdl:operation>
and in the response i get array of UserDefinedField as a part of response The array is of below type :
<s:complexType name="UserDefinedField">
<s:attribute name="Name" type="s:string" />
<s:attribute name="Version" type="s:decimal" use="required" />
<s:attribute name="UDFType" type="tns:UDFType" use="required" />
<s:attribute name="Enabled" type="s:boolean" use="required" />
<s:attribute name="Required" type="s:boolean" use="required" />
<s:attribute name="Index" type="s:int" use="required" />
<s:attribute name="Value" type="s:string" />
<s:attribute name="ForBizLogicEntity" type="s:string" />
</s:complexType>
My question is when i get array(assume i got 5 userdefined feilds as the array)
I want to query the xpath in such a way that in the array if i ask for a particular version in the userdefined feilds then it has to give me that particular index value.
Example:
we have a array of following :
Array1:
name: xxx
version : 1.0
UDF type: udf1
Index: 1
Array 2
name: YYY
version : 2.0
UDF Type : Udf2
index : 2
etccc.....upto n .
so my question is , i want the result in such a way if i say version=2.0 then it has to return me the corresponding index as 2. How do i do that in BPEL.
Please provide me some suggestions.
Or .
you can provide me some link where i can find the answer
Any suggestions are appreciated.
Regards
Pavan

Answer 1

little example :
<element name="assignInArrayProcessRequest">
  <complexType>
   <sequence>
    <element name="array" maxOccurs="unbounded">
     <complexType>
      <sequence>
       <element name="name" type="string"/>
       <element name="version" type="string"/>
      </sequence>
     </complexType>
    </element>
   </sequence>
  </complexType>
</element>so the array element is unbound.
this is the process payload
<ns1:array>
  <ns1:name>test1</ns1:name>
  <ns1:version>213562363</ns1:version>
</ns1:array>
<ns1:array>
  <ns1:name>test2</ns1:name>
  <ns1:version>yeryeryer</ns1:version>
</ns1:array>
<ns1:array>
  <ns1:name>test3</ns1:name>
  <ns1:version>fytetr</ns1:version>
</ns1:array> now you can use this peace of code
        <assign name="setArrayValue">
            <copy>
                <from expression="string('1.9999')"/>
                <to variable="inputVariable" part="payload"
                    query="/client:assignInArrayProcessRequest/client:array[1]/client:version"/>
            </copy>
        </assign>to update the value of version in the first element of the array.
in this example you can also create some loop and use the 'index' , the [1] value dynamic to update more then 1 values in the array-element
the response after the update
<ns1:array>
  <ns1:name>test1</ns1:name>
  <ns1:version>1.9999</ns1:version>
</ns1:array>
<ns1:array>
  <ns1:name>test2</ns1:name>
  <ns1:version>yeryeryer</ns1:version>
</ns1:array>
<ns1:array>
  <ns1:name>test3</ns1:name>
  <ns1:version>fytetr</ns1:version>
</ns1:array>Maybe you can use it :)