topic Re: Wait for a certain Task to finish without polling in Alfresco Archive

Wait for a certain Task to finish without polling

luckybtard — Tue, 03 Feb 2015 07:31:53 GMT

Hello,i have the following Scenario:There is a relatively complex Process i implemented using the Activitiengine. it consists of roughly 12 Tasks. Lets assume they are all in sequence for simplicity.1) A User requests POST to the RESTfull Webservice at: "/rest/start".2) The Servlet starts a Processi

Re: Wait for a certain Task to finish without polling

martin_grofcik — Wed, 04 Feb 2015 10:02:38 GMT

Hi,

The Servlet that started the Process, polls the Engine for this Task with the given Businesskey (ever 100ms it checks if the Task "Userreply" is present in the Processinstance with given Businesskey).

Question:
Is it possible to send results from the process instance execution to the servlet again? (e.g. web service task….)

Regards
Martin

Re: Wait for a certain Task to finish without polling

luckybtard — Wed, 04 Feb 2015 11:25:44 GMT

exactly my question, can i somehow tell the Servlet to just wait for an answer, without sleeping for fixed time or polling. Something like
xyz.waitForTaskToPopUp("#3")

Re: Wait for a certain Task to finish without polling

martin_grofcik — Thu, 05 Feb 2015 06:03:35 GMT

Hi,

I would say that:
1. you can implement web service and deploy it on your tomcat instance.
2. You can call web service from the process instance (doc: 8.5.4. Web Service Task)

Regards
Martin