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jBPM 4.3 Spring bean as event listener

created by Peter Swartwout in jBPM - View the full discussion

I have followed the recommendations in the developer's guide for doing Spring integration with jBPM 4.3. My application deploys to JBoss 5, and the server starts cleanly.

 

Here's my issue: I want my processes to be able to use Spring beans for event listeners. The relevant process code is:

<process name="speechrec" ...>
    <on event="start">
        <event-listener expr="#{processListener}" >
            <field name="eventType">
                <string value="start"/>
            </field>
        </event-listener>
    </on>

The bean id "processListener" is defined in my Spring config, and the expression #{processListener} is evaluated to the correct class name, but the class is instantiated by jBPM instead of Spring. So the bean's Spring properties are not injected, so of course I get NPE's whenever they are used. I was hoping the "expr" attribute would behave like Spring's "ref" attribute and make use of an existing bean if there is one.

 

Is there any way to get what I want?  Does it mean that only jBPM beans can be used as event listeners?

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