[jboss-user] [jBPM] - jBPM 5 - How to Pass parameters in a WorkItem BPMN2 file

[scurvo]

scurvo [http://community.jboss.org/people/scurvo] created the discussion

"jBPM 5 - How to Pass parameters in a WorkItem BPMN2 file"

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Hi all again  :D 

I am trying to create a work item that receives certain parameters, and does stuff depending on them.
Through the examples i created this BPMN2 file:

<?xml version="1.0" encoding="UTF-8"?>
<definitions id="Definition"
             targetNamespace=" http://www.example.org/MinimalExample http://www.example.org/MinimalExample"
             typeLanguage=" http://www.java.com/javaTypes http://www.java.com/javaTypes"
             expressionLanguage=" http://www.mvel.org/2.0 http://www.mvel.org/2.0"
             xmlns=" http://www.omg.org/spec/BPMN/20100524/MODEL http://www.omg.org/spec/BPMN/20100524/MODEL"
             xmlns:xs=" http://www.w3.org/2001/XMLSchema-instance http://www.w3.org/2001/XMLSchema-instance"
             xs:schemaLocation=" http://www.omg.org/spec/BPMN/20100524/MODEL http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd"
             xmlns:bpmndi=" http://www.omg.org/spec/BPMN/20100524/DI http://www.omg.org/spec/BPMN/20100524/DI"
             xmlns:dc=" http://www.omg.org/spec/DD/20100524/DC http://www.omg.org/spec/DD/20100524/DC"
             xmlns:di=" http://www.omg.org/spec/DD/20100524/DI http://www.omg.org/spec/DD/20100524/DI"
             xmlns:tns=" http://www.jboss.org/drools http://www.jboss.org/drools">

    <itemDefinition id="_sItem" structureRef="java.lang.String"/>
    <itemDefinition id="_int" structureRef="java.lang.Integer"/>

    <process id="TestWI" name="Test the WI" >

        <!-- process variables -->
        <property id="data_provider_ID" itemSubjectRef="_sItem"/>
        <property id="data_source_ID" itemSubjectRef="_sItem"/>
        <property id="source_url" itemSubjectRef="_sItem"/>
        <property id="source_set" itemSubjectRef="_sItem"/>
        <property id="metadata_format" itemSubjectRef="_sItem"/>
        <property id="record_count" itemSubjectRef="_int"/>

        <startEvent id="_1" name="StartProcess"/>
        <sequenceFlow sourceRef="_1" targetRef="_2"/>
        <task id="_2" name="Harvest" tns:taskName="Harvest" >
            <ioSpecification>
                <dataInput id="dpID" name="DATA_PROVIDER_ID" />
                <dataInput id="dsID" name="DATA_SOURCE_ID" />
                <dataInput id="src_url" name="SOURCE_URL" />
                <dataInput id="src_set" name="SOURCE_SET" />
                <dataInput id="mtd_format" name="METADATA_FORMAT" />
                <dataInput id="rcrd_count" name="RECORD_COUNT" />
                <inputSet>
                    <dataInputRefs>dpID</dataInputRefs>
                    <dataInputRefs>dsID</dataInputRefs>
                    <dataInputRefs>src_url</dataInputRefs>
                    <dataInputRefs>src_set</dataInputRefs>
                    <dataInputRefs>mtd_format</dataInputRefs>
                    <dataInputRefs>rcrd_count</dataInputRefs>
                </inputSet>
                <outputSet>
                </outputSet>
            </ioSpecification>
            <dataInputAssociation>
                <sourceRef>data_provider_ID</sourceRef>
                <targetRef>dpID</targetRef>
            </dataInputAssociation>
            <dataInputAssociation>
                <sourceRef>data_source_ID</sourceRef>
                <targetRef>dsID</targetRef>
            </dataInputAssociation>
            <dataInputAssociation>
                <sourceRef>source_url</sourceRef>
                <targetRef>src_url</targetRef>
            </dataInputAssociation>
            <dataInputAssociation>
                <sourceRef>source_set</sourceRef>
                <targetRef>src_set</targetRef>
            </dataInputAssociation>
            <dataInputAssociation>
                <sourceRef>metadata_format</sourceRef>
                <targetRef>mtd_format</targetRef>
            </dataInputAssociation>
            <dataInputAssociation>
                <sourceRef>record_count</sourceRef>
                <targetRef>rcrd_count</targetRef>
            </dataInputAssociation>
        </task>
        <sequenceFlow sourceRef="_2" targetRef="_3"/>
        <endEvent id="_3" name="EndProcess">
            <terminateEventDefinition/>
        </endEvent>
    </process>

</definitions>


I was able with this to get the parameters i defined in the corresponding work item's handler.
Although i made it now that i want to have multiple work items like this on a single process i have a para meter problem  :( . 
Is it possible to define my parameters right on the bpmn2 file?
If not, is there a way of getting the ID of the task of a workItem (i wana get that <task id="_2"...)?
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