process-definition.xml

<?xml version="1.0" encoding="UTF-8"?>
<definitions id="definitions"
             targetNamespace="http://activiti.org/bpmn20" 
             xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:activiti="http://activiti.org/bpmn">

    <process id="pictureRequest" name="A process that handles picture requests by users">

        <startEvent id="theStart" />

        <sequenceFlow id="flow1" sourceRef="theStart" targetRef="needsApprovalTask" />

        <serviceTask id="needsApprovalTask" name="Needs approval" activiti:class="com.picturerequest.NeedsApprovalDelegate" />
        
        <sequenceFlow id="flow2" sourceRef="needsApprovalTask" targetRef="gateway" />

        <exclusiveGateway id="gateway" name="Needs approval?" />
    
        <sequenceFlow id="flow3" sourceRef="gateway" targetRef="confirmApproval">
          <conditionExpression xsi:type="tFormalExpression">${needsApproval}</conditionExpression>
        </sequenceFlow>
            
        <sequenceFlow id="flow4" sourceRef="gateway" targetRef="chargeAccount">
          <conditionExpression xsi:type="tFormalExpression">${!needsApproval}</conditionExpression>
        </sequenceFlow>

        <userTask id="confirmApproval" name="Approve the picture request" activiti:formKey="approval.form">
            <potentialOwner>
                <resourceAssignmentExpression>
                    <formalExpression>user(kermit), group(management)</formalExpression>
                </resourceAssignmentExpression>
            </potentialOwner>
        </userTask>
  
        <sequenceFlow id="flow5" sourceRef="confirmApproval" targetRef="gateway2" />
  
        <exclusiveGateway id="gateway2" name="Is approval confirmed?" />
    
        <sequenceFlow id="flow6" sourceRef="gateway2" targetRef="chargeAccount">
          <conditionExpression xsi:type="tFormalExpression">${approvalConfirmed}</conditionExpression>
        </sequenceFlow>
            
        <sequenceFlow id="flow7" sourceRef="gateway2" targetRef="theEnd">
          <conditionExpression xsi:type="tFormalExpression">${!approvalConfirmed}</conditionExpression>
        </sequenceFlow>

        <serviceTask id="chargeAccount" name="Charge account" activiti:class="com.picturerequest.ChargeDelegate">
            <extensionElements>
                <activiti:field name="wsdl" expression="http://localhost:8291/chargeService?wsdl" />
                <activiti:field name="operation" expression="chargeAccount" />
                <activiti:field name="parameters" expression="${user}, ${imageName}" />
                <activiti:field name="returnValue" expression="myReturn" />
            </extensionElements>
        </serviceTask>
        
        <sequenceFlow id="flow8" sourceRef="chargeAccount" targetRef="theEnd" />

        <endEvent id="theEnd" />

    </process>
</definitions>