java - Camunda : get active tasks -


how can list of active tasks in code use in camunda ?

i @ answer "how query position of process instance?" can't understand "processinstanceid" , supposed make method works.

here's code i'm trying : 

package org.camunda.bpm;  import java.util.hashmap; import java.util.list; import java.util.map; import org.camunda.bpm.engine.processengine; import org.camunda.bpm.engine.repositoryservice; import org.camunda.bpm.engine.runtimeservice; import org.camunda.bpm.engine.runtime.processinstance; import org.camunda.bpm.model.bpmn.bpmnmodelinstance; import org.camunda.bpm.model.xml.instance.modelelementinstance;  public class allactiveactivities {  public map<string, string> getallactiveactivities(string processinstanceid) { // engine services processengine processengine = bpmplatform.getdefaultprocessengine() runtimeservice runtimeservice = processengine.getruntimeservice(); repositoryservice repositoryservice = processengine.getrepositoryservice();  // process instance processinstance processinstance =     runtimeservice.createprocessinstancequery()         .processinstanceid(processinstanceid)         .singleresult();  hashmap<string, string> activitynamebyactivityid = new hashmap<string, string>();  // active activities of process instance list<string> activeactivityids =     runtimeservice.getactiveactivityids(processinstance.getid());  // bpmn model of process instance bpmnmodelinstance bpmnmodelinstance =     repositoryservice.getbpmnmodelinstance(processinstance.getprocessdefinitionid());  (string activeactivityid : activeactivityids) {   // speaking name of each activity in diagram   modelelementinstance modelelementbyid =       bpmnmodelinstance.getmodelelementbyid(activeactivityid);   string activityname = modelelementbyid.getattributevalue("name");    activitynamebyactivityid.put(activeactivityid, activityname); }  // map contains active activities return activitynamebyactivityid; }  }

thanks in advance help.

the following statement return active tasks, can standalone tasks.

processengine.gettaskservice().createtaskquery().active().list()

if want active tasks corresponding specific running process have add .processinstanceid(processinstanceid) statement before .list(). processinstanceid id identifies process instance. if start process/workflow process instance created unique id. these id can example execute following statement. 

int processinstanceid = processengine.getruntimeservice()  .createprocessinstancequery()  .processdefinitionkey(processdefinitionkey)  .singleresult()  .getid()

the variable processdefinitionkey id set in process definition xml.


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