topic Modifing userTask's formKey using Activit API in Alfresco Archive

Modifing userTask's formKey using Activit API

aigloss — Sat, 12 Apr 2014 18:48:22 GMT

Hi, I'm trying to modify the form key for a userTask using Activiti API. <!–break–>I've seen no method in FormService to achieve this, so, my first approach is to get the XML of the currently deployed process, add or modify the userTask "activiti:formKey" attribute, and redeploy it with the sa

Re: Modifing userTask's formKey using Activit API

trademak — Mon, 14 Apr 2014 07:40:38 GMT

What do you mean with "seems to hang"? Are you using the Activiti Explorer?
Adding a new version of the process definition like this is fine.

Best regards,

Re: Modifing userTask's formKey using Activit API

aigloss — Mon, 14 Apr 2014 08:11:50 GMT

Hi Tijs,

thanks for your quick response.
I'm currently using Spring to access the Process Engine. By "seems to hang" I mean I can keep using my app as long as what I try to use is not related to ProcesEngine. For example, if I try to query the database for current deployed processes, it is not responding, but I can navigate anywhere in my app that does nothing to do with ProcessEngine. Besides, when stopping Tomcat, it shows an error related to n query made by ProcessEngine to Process Definitions tables (have to kill the process since my app is not undeployed).

After doing a bunch of testing, I've find out that, when debugging the server, the problem is gone, so it looks like some kind of concurrency problem; so I'm refactoring my app to try get rid of it. (if you want, I can try to rollback my changes to get that error back and show it in this thread)

Anyway, is there any other way to change a task formkey than redeploying the whole process definition?

Thanks.

Re: Modifing userTask's formKey using Activit API

aigloss — Mon, 14 Apr 2014 19:49:10 GMT

The error in the log that "hangs" my app is back:
<em>
### The error may exist in org/activiti/db/mapping/entity/ProcessDefinition.xml
### The error may involve org.activiti.engine.impl.persistence.entity.ProcessDefinitionEntity.selectProcessDefinitionsByQueryCriteria
### The error occurred while executing a query
### SQL: select * from ( select a.*, ROWNUM rnum from ( select RES.* from ACT_RE_PROCDEF RES WHERE RES.VERSION_ = (select max(VERSION_) from ACT_RE_PROCDEF where KEY_ = RES.KEY_) order by RES.ID_ asc ) a where ROWNUM < ?) where rnum >= ?]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
</em>
It is thrown in catalina.out when trying to redeploy my app. Any help would be appreciated.

Re: Modifing userTask's formKey using Activit API

trademak — Wed, 16 Apr 2014 14:26:51 GMT

Are you using an in-memory H2 database?

Re: Modifing userTask's formKey using Activit API

aigloss — Wed, 16 Apr 2014 15:55:02 GMT

No. I'm currently using Oracle 11.2.0.2.0 and Activiti 5.14.
The datasource is defined at server level and is used by some other apps, but none of them is having any problem with the database.

Re: Modifing userTask's formKey using Activit API

frederikherema1 — Tue, 22 Apr 2014 10:22:27 GMT

The only way you can change the form-key is by deploying the process-definition again (effectively creating a new version of the process-definition, will not be applied for running versions) or manually update the database process-definition XML with the correct values (at own risk).