topic Re: Accessing Process Instance ID inside a ScriptTask in Alfresco Archive

Accessing Process Instance ID inside a ScriptTask

gavnunns — Tue, 25 Feb 2014 05:45:42 GMT

Hi,I need to access the process instance id from a groovy script task.According to the docs the script task has access to all process variables, however I'm not clear on if this includes the process instance id or exactly what name I would use to refernce it - http://activiti.org/userguide/index.htm

Re: Accessing Process Instance ID inside a ScriptTask

jbarrez — Tue, 25 Feb 2014 09:36:43 GMT

The 'execution' variable should be available. That one should have a getProcessInstanceId() method.

Re: Accessing Process Instance ID inside a ScriptTask

tstephen — Tue, 25 Feb 2014 09:59:10 GMT

Hi Gavin,

An implicit object named 'execution' is exposed to the script task. This example: https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/test/resources/org/activiti/examples/bpmn/scripttask/ScriptTaskTest.testAutoStoreVariables.bpmn20.xml shows it being used to set a process variable (line 42) and there is a getVariable method too.

execution is an instance of ExecutionEntity, which I think is intended as internal (at least it does not appear in JavaDoc) but at least you can rely on it implementing http://activiti.org/javadocs/org/activiti/engine/delegate/VariableScope.html and http://activiti.org/javadocs/org/activiti/engine/runtime/ProcessInstance.html allowing you access to execution.getProcessInstanceId amongst other things.

I was surprised myself that it does not also implement http://activiti.org/javadocs/org/activiti/engine/delegate/DelegateExecution.html which is what you have access too when writing Java Service Task implementations (though it does fulfil that contract).

All the best,
Tim

Re: Accessing Process Instance ID inside a ScriptTask

gavnunns — Tue, 25 Feb 2014 12:18:50 GMT

Perfect, thanks again for both rapid and informative response! ❤️ these forums!

As stated execution object is available to the Script Task which provides you will the following;

<code>execution.getProcessInstanceId()

Provides Methods

String getActivityId()
String getId()
String getParentId()
String getProcessInstanceId()
boolean isEnded()
boolean isSuspended()