[Design of JBoss jBPM] - Re: jPDL 4 early feedback
by alex.guizar＠jboss.com
The problem with this kind of syntax:
<activity type="mail"/>
is that you can't define a schema anymore. The content type of the activity element has to allow any element.
One solution is to use nested subelements:
<activity>
| <mail to='boss' />
| </activity>
However, this is verbose and makes the process definition less readable.
WS-BPEL solved this by having a number of stock activities like:
<bpel:invoke operation="selfdestruct" />
and providing a placeholder for extension activities:
<bpel:extensionActivity>
| <jbpm:mail to='boss' />
| </bpel:extensionActivity>
The BPEL approach may be worth considering here.
@Heiko: the earlier posts were about skipping validation for user-defined extension items whose schema was unavailable. Just FYI.
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18 years
[Design of JBoss jBPM] - Re: jPDL 4 early feedback
by kukeltje
anonymous wrote : If we cannot extend the schema within minor releases we'll something like this soon:
|
|
| |
| | Stock one in 4.0:
| | <email/>
| |
| | Stock one in 4.1:
| | <activity class="org.jbpm.activities.FTP"/>
| |
| |
|
This already happend in 3. We have a
| <mail name="send mail">
| ..
| </mail>
|
and
| <node name="esb1>
| <action class=org.jboss.soa.esb.services.jbpm.actionhandlers.EsbActionHandler">
| .... (params)
| </action>
| </node>
|
|
The reason here was that the jBPM and the GPD could be extended by a ESB configuration pane without changing the core...
<activity type="FTP"/>
should be possible by using 'refs' to generic actionhandlers (sorry, not used to the pvm wordings). Maybe even to generic refs whose implementations are in the core and do not have to be configured in the processdefinition.
Still, for me mail, esb etc should not be specific nodes since they are not for the control flow....
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18 years