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Re: How to access a processInstance within a work item
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created by <a href="http://community.jboss.org/people/tob1as">Tobias Wittur</a> in <i>jBPM</i> - <a href="http://community.jboss.org/message/623389#623389">View the full discussion</a>
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<div class="jive-rendered-content"><p>Thanks Tihomir.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here some example code.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>processTest.java</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><blockquote class="jive-quote"><p>package TestingBPMN;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import java.util.HashMap;</p><p>import java.util.Map;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import org.drools.KnowledgeBase;</p><p>import org.drools.builder.KnowledgeBuilder;</p><p>import org.drools.builder.KnowledgeBuilderFactory;</p><p>import org.drools.builder.ResourceType;</p><p>import org.drools.io.ResourceFactory;</p><p>import org.drools.logger.KnowledgeRuntimeLogger;</p><p>import org.drools.logger.KnowledgeRuntimeLoggerFactory;</p><p>import org.drools.runtime.StatefulKnowledgeSession;</p><p>import org.drools.runtime.process.WorkflowProcessInstance;</p><p>import org.jbpm.process.workitem.wsht.WSHumanTaskHandler;</p><p>import org.jbpm.bpmn2.handler.SendTaskHandler;</p><p>import org.jbpm.bpmn2.handler.ServiceTaskHandler;</p><p>/**</p><p> * This is a sample file to launch a process.</p><p> */</p><p>public class ProcessTest {</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public static final void main(String[] args) {</p><p>        try {</p><p>            </p><p>            KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();</p><p>            kbuilder.add(ResourceFactory.newClassPathResource("TestingBPMN/TestingBPMN2.bpmn2"), ResourceType.BPMN2);</p><p>            KnowledgeBase kbase = kbuilder.newKnowledgeBase();</p><p>            </p><p>            StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();</p><p>            </p><p>            /*</p><p>             * Register work item handlers</p><p>             * </p><p>             */</p><p>            ksession.getWorkItemManager().registerWorkItemHandler(</p><p>                     "Service Task", </p><p>                     //Pass session into work item handler</p><p>                     new CustomerServiceTaskHandler(ksession)</p><p>            );</p><p>            ksession.getWorkItemManager().registerWorkItemHandler(</p><p>                    "Send Task", </p><p>                    new CustomSendTaskHandler()</p><p>            );</p><p>            </p><p>            /*</p><p>             * Create parameters</p><p>             */</p><p>            HashMap<String, String> m = new HashMap<String, String>();</p><p>            m.put("name", "Karsten");</p><p>            m.put("request", "test");</p><p>            </p><p>            /*</p><p>             * Message based process start passing values</p><p>             */</p><p>            </p><p>            ksession.signalEvent("Message-StartProcessMessage", m);</p><p>            ksession.signalEvent("Message-StartProcessMessage", m);</p><p>            ksession.signalEvent("Message-StartProcessMessage", m);</p><p>            ksession.signalEvent("Message-StartProcessMessage", m);</p><p>            ksession.signalEvent("Message-StartProcessMessage", m);</p><p>            </p><p>            </p><p>        } catch (Throwable t) {</p><p>            t.printStackTrace();</p><p>        }</p><p>    }</p><p>}</p></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>CustomerServiceTaskHandler.java</p><blockquote class="jive-quote"><p>package TestingBPMN;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import java.lang.reflect.InvocationTargetException;</p><p>import java.lang.reflect.Method;</p><p>import java.util.HashMap;</p><p>import java.util.Map;</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>import org.drools.runtime.StatefulKnowledgeSession;</p><p>import org.drools.runtime.process.WorkItem;</p><p>import org.drools.runtime.process.WorkItemHandler;</p><p>import org.drools.runtime.process.WorkItemManager;</p><p>import org.drools.runtime.process.ProcessInstance;</p><p>/*</p><p><span> * </span><a class="jive-link-external-small" href="https://github.com/droolsjbpm/jbpm/blob/master/jbpm-bpmn2/src/main/java/org/jbpm/bpmn2/handler/ServiceTaskHandler.java" target="_blank">https://github.com/droolsjbpm/jbpm/blob/master/jbpm-bpmn2/src/main/java/org/jbpm/bpmn2/handler/ServiceTaskHandler.java</a></p><p> * </p><p> */</p><p>public class CustomerServiceTaskHandler implements WorkItemHandler {</p><p>    private StatefulKnowledgeSession ksession = null;</p><p>    public CustomerServiceTaskHandler(StatefulKnowledgeSession ksession) {</p><p>        this.ksession = ksession;</p><p>    }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public void executeWorkItem(WorkItem workItem, WorkItemManager manager) {</p><p>        </p><p>        //Print Process Instance Id</p><p>        System.out.println(workItem.getProcessInstanceId());</p><p>        </p><p>        //Get Current process Instance</p><p>        ProcessInstance p = this.ksession.getProcessInstance(workItem.getProcessInstanceId());</p><p>        </p><p>        //Abort the current process if it has an id of 3</p><p>        if(workItem.getProcessInstanceId()==3){</p><p>            this.ksession.abortProcessInstance(workItem.getProcessInstanceId());</p><p>        }</p><p>        </p><p>        //if the current state is 3, the process has been aborted!</p><p>        if(p.getState()==3){</p><p>            System.out.println("aborted!");</p><p>        }</p><p>        </p><p>        System.out.println("");</p><p>    }</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>    public void abortWorkItem(WorkItem workItem, WorkItemManager manager) {}</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>}</p></blockquote></div>
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