Human Task output variables (I need help I'm in a dead end alley)

Question

Good evening to all. I have a human task, that receives this input in the input variable:
     <element name="ReadWriteHumanTaskProcessRequest">
          <complexType>
               <sequence>
                    <element name="numero" type="string"/>
                    <element name="apellidos" type="string"/>
                    <element name="nombres" type="string"/>
                    <element name="direccion" type="string"/>
               </sequence>
          </complexType>
     </element>
I append this to the payload of the task :
<bpelx:append>
<bpelx:from variable="inputVariable" part="payload"
query="/client:ReadWriteHumanTaskProcessRequest"/>
<bpelx:to variable="initiateTaskInput" part="payload"
query="/taskservice:initiateTask/task:task/task:payload"/>
</bpelx:append>
The JSP page shows fine, user modify the fiels, I can see in the Receive part of the Human task the fields that are modified:
<?xml version="1.0" encoding="UTF-8" ?>
- <task xmlns="http://xmlns.oracle.com/bpel/workflow/task">
<title>Another One</title>
- <payload xmlns="http://xmlns.oracle.com/bpel/workflow/task">
- <ns1:ReadWriteHumanTaskProcessRequest xmlns:ns1="http://xmlns.oracle.com/ReadWriteHumanTask">
<ns1:numero>1</ns1:numero>
<ns1:apellidos>q</ns1:apellidos>
<ns1:nombres>a</ns1:nombres>
<ns1:direccion>z</ns1:direccion>
</ns1:ReadWriteHumanTaskProcessRequest>
</payload>
I need to retrieve the value of the contet of the payload, I have tried this:
<copy>
<from variable="ReadWriteHT_1_globalVariable"
part="payload"
query="/task:task/task:payload"/>
<to variable="inputVariable" part="payload"
query="/client:ReadWriteHumanTaskProcessRequest"/>
During deploymet I got a warning about incompatible types in from-spec to-spect but it works anyway.
But the result is this:
<inputVariable><part xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="payload"><ns1:ReadWriteHumanTaskProcessRequest xmlns="http://xmlns.oracle.com/bpel/workflow/task" xmlns:ns1="http://xmlns.oracle.com/ReadWriteHumanTask"><ns1:ReadWriteHumanTaskProcessRequest xmlns:ns1="http://xmlns.oracle.com/ReadWriteHumanTask">
<ns1:numero>1</ns1:numero>
<ns1:apellidos>q</ns1:apellidos>
<ns1:nombres>a</ns1:nombres>
<ns1:direccion>z</ns1:direccion>
</ns1:ReadWriteHumanTaskProcessRequest>
</ns1:ReadWriteHumanTaskProcessRequest>
</part></inputVariable>
As you can see the payload is inside the input variable and I can't find a way in the copy to write anything but /task:task/task:payload.
I've see the samples and tutorials, those work but mine no. There is a way to get the values from the element task:payload ?

Answer 1

Hello to all. I´ve been trying to do something very similar to Ivan. I created a Human Task that has one Parameter called test which is a {http://www.w3.org/2001/XMLSchema}string. I then genereted a Auto Task Form so that I can update the value of this parameter in the worklist. So for so good. Now I want to get this value that was inputed in this variable and copy to a global variable that I have created, that has the same type: {http://www.w3.org/2001/XMLSchema}string
I followed the instructions above but had no luck. here is the code:
<assign name="CopyPayloadFromTask">
<copy>
<from variable="TesteFormulario_1_globalVariable"
part="payload"
query="/task:task/task:payload/client:TesteFormProcessRequest/client:test"/>
<to variable="FormReturn"/>
</copy>
</assign>
When I run the flow, it gives me this message:
<selectionFailure xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"><part name="summary"><summary>empty variable/expression result.
xpath variable/expression expression "/task:task/task:payload/client:TesteFormularioProcessRequest/client:test" is empty at line 175, when attempting reading/copying it.
Please make sure the variable/expression result "/task:task/task:payload/client:TesteFormularioProcessRequest/client:test" is not empty.
</summary>
</part></selectionFailure>
I have noticed that this is a general message. I´ve tryed changing the parameter name, from test do glauco, for instance, which doesn´t exist, and the same message is returned. What am I doing wrong?
Thanks
Glauco