我想获取进程中单个实例的当前位置。除了 id 之外,是否可以获取活动的名称作为返回值?
您可以使用以下代码获取流程实例的当前位置,当流程在多个位置等待时,该代码还将为您提供活动的名称。
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) {
// get engine services
ProcessEngine processEngine = BpmPlatform.getDefaultProcessEngine()
RuntimeService runtimeService = processEngine.getRuntimeService();
RepositoryService repositoryService = processEngine.getRepositoryService();
// get the process instance
ProcessInstance processInstance =
runtimeService.createProcessInstanceQuery()
.processInstanceId(processInstanceId)
.singleResult();
HashMap<String, String> activityNameByActivityId = new HashMap<String, String>();
// get all active activities of the process instance
List<String> activeActivityIds =
runtimeService.getActiveActivityIds(processInstance.getId());
// get bpmn model of the process instance
BpmnModelInstance bpmnModelInstance =
repositoryService.getBpmnModelInstance(processInstance.getProcessDefinitionId());
for (String activeActivityId : activeActivityIds) {
// get the speaking name of each activity in the diagram
ModelElementInstance modelElementById =
bpmnModelInstance.getModelElementById(activeActivityId);
String activityName = modelElementById.getAttributeValue("name");
activityNameByActivityId.put(activeActivityId, activityName);
}
// map contains now all active activities
return activityNameByActivityId;
}
}
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