topic Re: whats the best way to design a process that runs tasks async in Alfresco Archive

whats the best way to design a process that runs tasks async

gs76pl — Wed, 04 May 2011 16:10:36 GMT

hi,i'm trying to design a process that would run each task/work in a separate thread but a process as a whole shouldn't progress until specific job has been completed. |———[async task A] —————————- | |start—- +———[async task B]———

Re: whats the best way to design a process that runs tasks async

jbarrez — Thu, 05 May 2011 06:24:51 GMT

Making a certain activity asynchronous is something we haven't implemented yet (it's also not part of the BPMN 2.0 spec).

On the forum, people have suggested that you can mimic asynchronicity by putting a 'fake' timer (with very small time) in front of the tasks you want to make async.

Re: whats the best way to design a process that runs tasks async

gs76pl — Thu, 05 May 2011 09:38:14 GMT

you're right about bpmn 2.0 and async tasks but on the other hand it provides "sendTask" and "receiveTask" to handle the same. While i've seen support for "receiveTask" in the Activiti documentation and junit tests, i couldn't find any mention of "sendTask", hence I assume it's not being supported yet. Are there any plans to add support for "sendTask"?

Re: whats the best way to design a process that runs tasks async

jbarrez — Mon, 09 May 2011 09:18:12 GMT

The send task does laready do something: sending a webservice call or sending an email - the webservice part being the one of the BPMN spec.

However, what you need is more lightweight: a simple execution listener would already suffice uf you just want to send out a Java method call, and receive it in the recive task.