topic Re: External JMS application in Alfresco Archive

External JMS application

fitzcaraldo — Wed, 06 Mar 2013 06:22:23 GMT

<<Newbie alert>>HelloI have a number of legacy applications I would like to orchestrate using Activiti. Each of then uses JMS queues for request/response interactions: Request messages are written to a nominated queue and responses are written to another queue using correlationID to mat

Re: External JMS application

frederikherema1 — Thu, 07 Mar 2013 13:25:04 GMT

There is no built-in support for reading or sending JMS-messages. However, BPMN has a notion of message-events and signal-events. Using a correlationId that is stored in the process-instance business-key (can be provided when started) you can easily lookup the appropriate activiti-process using our API when a JMS-message has been received and signal the process to carry on (optionally passing in payload based on the message). For sending JMS-messages, you can create a JavaDelegate that queues a message on JMS and model that in a service-task in your process.

Off course, using the camel integration for this makes a lot of sense, as Camel has a lot of stuff built-in for handling queues and JMS.

Re: External JMS application

davidnguyen — Tue, 08 Oct 2013 11:23:57 GMT

Hi,

I have the same kind of problem and got the same conclusion : using ~~an intermediate receive event (message or signal)~~ a receive task so the process waits until the response is available. However, I could not find how to send a message event to a specific process instance using the REST api. Is this currently supported in 5.13?

There is an operation to send a signal (http://activiti.org/userguide/index.html#N15FFB) but it seems to be in the legacy api so I guess it is not safe to use.

Re: External JMS application

trademak — Wed, 09 Oct 2013 09:11:14 GMT

This service should provide the functionality you are looking for:

http://activiti.org/userguide/index.html#N13D8A

Best regards,

Re: External JMS application

davidnguyen — Tue, 15 Oct 2013 12:48:51 GMT

Hi Tijs, thank you for your answer, this was indeed what I was looking for.

Re: External JMS application

imbaczek — Tue, 15 Oct 2013 14:56:07 GMT

Related question: I've got a requirement to orchestrate processes like this:
[img]http://i.imgur.com/QDmbzsY.png[/img]
I'm new to Activiti and generally BPM - is Activiti a good choice for such stuff? I'm trying to get something working right now and keep running into server-side issues like NPE/XML parse errors (probably forgot to set a field somewhere in the designer and your validation is… not enough). It's still much more approachable than jBPM (don't get me started…), but still it looks like there's room for improvement.

I digress… question is: is Activiti a good choice if I don't have any human tasks in my processes?

Re: External JMS application

jbarrez — Mon, 21 Oct 2013 10:41:24 GMT

You could use Activiti for it, but imho solutions like Apache Camel are way better suited for your use case.

Activiti does have great support for Apache Camel 😉