topic Re: process variable vs. condition expression in Alfresco Archive

process variable vs. condition expression

larsson7 — Thu, 11 Oct 2012 07:13:40 GMT

Hello all,ich have a question about sequence flows and process variables. I have a process with a script task just after the start event. In the script task i define the process variable outputTransition that can get the value "approved" or "denied". After the script task, an exclusive gateway split

Re: process variable vs. condition expression

frederikherema1 — Thu, 11 Oct 2012 12:51:22 GMT

How do you set the variable in your script task? You can always use the "execution" object to set variables, or the "activiti:resultVariable" on the script-task:


<script>
    def scriptVar = "test123"
    execution.setVariable("myVar", scriptVar)
</script>

Re: process variable vs. condition expression

larsson7 — Thu, 11 Oct 2012 13:09:45 GMT

My script task looks like that:


user = Packages.com.liferay.portal.service.UserLocalServiceUtil.fetchUser(10402);
roles = user.getRoleIds();
outputTransition = "denied";
for (i = 0; i < roles.length; i++) {
 if (roles[i] == 15) {
  outputTransition = "approved";
 break;
 }
} 
Packages.com.liferay.portal.kernel.workflow.WorkflowStatusManagerUtil.updateStatus(Packages.com.liferay.portal.kernel.workflow.WorkflowConstants.toStatus(outputTransition), workflowContext);

It works when i just check the variable outputTransition but when i want to use the variable later in the workflow it doesn´t..

Best regards, Philipp

Re: process variable vs. condition expression

frederikherema1 — Thu, 11 Oct 2012 13:13:40 GMT

Use this after the for-loop:

execution.setVariable("outputTransition", outputTransition)

Re: process variable vs. condition expression

larsson7 — Thu, 11 Oct 2012 13:26:29 GMT

Thanks frederikheremans,

but it doesn´t help..
Do i have to import another class or something to get it work?
I just create a script task and wrote the code above into main Config of the Script Task.
So when i try like you said, i get the following error:


Caused by: com.liferay.portal.kernel.scripting.ScriptingException: ReferenceError: "execution" is not defined.

I use eclipse and Liferay 6.1.

Thanks!

Re: process variable vs. condition expression

frederikherema1 — Thu, 11 Oct 2012 14:15:53 GMT

What environment are you running in? Activiti inside life ray?

Re: process variable vs. condition expression

larsson7 — Thu, 11 Oct 2012 14:27:56 GMT

I use the activiti pluin for liferay. Both with the newest versions.
So Activiti is integrated in liferay.
And i want to use activiti to model different workflows for example to create web content or something.

In my workflows i want add some code in javascript like above. To make it work in Liferay i have to change the scriptformat from javascript to LiferayJavaScript.

But there is one problem that i don´t see yet. For example the execution.setVariable().

So when i use the exmaple above in Liferay with scriptformat "javascript" i get the following error:

[http-bio-8080-exec-3][render_portlet_jsp:154] org.activiti.engine.ActivitiException: problem evaluating script: sun.org.mozilla.javascript.internal.EcmaError: ReferenceError: "workflowContext" is not defined. (<Unknown source>#17) in <Unknown source> at line number 17

And when i use it with scriptformat "LiferayJavaScript" i get this:

com.liferay.portal.kernel.scripting.ScriptingException: ReferenceError: "execution" is not defined. (script#10)

Greetings and thanks!

Re: process variable vs. condition expression

frederikherema1 — Fri, 12 Oct 2012 07:02:39 GMT

I'm not aware how the Liferay-plugin is hooked in. All I know is that activiti exposes the "execution" to all scripts in script-task, using the default JSR-223 ScriptBindings. It's up to the JS-engine to use this and seems like liferayJavascript doesn't expose this. Is the WorkflowContext also LiferaySpecific? Maybe it exposes a way to set variables on an execution?

Re: process variable vs. condition expression

larsson7 — Fri, 12 Oct 2012 07:23:13 GMT

Yes WorkflowContext is also Liferay specific.
So when i understand you right, execution.setVariable is not supported in Liferay?! Is there any chance to get more information about activiti / Liferay integration?! It is very difficult to get the right information about this topic.

Best Regards, Philipp

Re: process variable vs. condition expression

frederikherema1 — Fri, 12 Oct 2012 07:25:48 GMT

There are a couple of wiki-pages on http://www.emforge.net/web/activiti-liferay/wiki/-/wiki/Main/BPMN+2.0+for+Liferay+with+using+Activiti+Plugin. I suggest checking out the sources for this to see how the nuts and bolts fit together…

The project not maintained by the Activiti core-team. Perhaps try to contact the project owner?

Re: process variable vs. condition expression

larsson7 — Fri, 12 Oct 2012 07:59:42 GMT

Hey,

thanks, i know this page. I studied days ago but it doesn´t help in special questions..
Easy workflows with just a approve and a small script task, ok but more complex workflows…
They are still developing the Activiti / Liferay integration and the documentation isn´t very good.

No good news today..

Re: process variable vs. condition expression

iam — Wed, 17 Oct 2012 20:12:55 GMT

@Larsson7,
When you set any variable in script task, this variable is available in process instance.
You can set it in one task and use in other. It's not necessary to use setter execution.setVariable() in the script task.