[JBoss-user] [JBoss jBPM] - Re: specifying context variables through the process definit

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Raised http://jira.jboss.com/jira/browse/JBPM-679

Thanks

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[JBoss-user] [JBoss jBPM] - Re: specifying context variables through the process definit

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Dutch beer? I don't think the beer God will approve :-))

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[JBoss-user] [JBoss jBPM] - Re: specifying context variables through the process definit

[kukeltje]

Amen

(I've been told by one of the apostles that a bottle of Dutch beer helps)

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[JBoss-user] [JBoss jBPM] - Re: specifying context variables through the process definit

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Charles,

You are correct. This is not (yet) supported AFAIK. If you would like it, file 
a JIRA issue and pray to the jBPM God that he likes it ;-)

Cheers,
Koen

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[JBoss-user] [JBoss jBPM] - Re: specifying context variables through the process definit

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I can get what I need by associating an action with a node-enter event on the 
process-state and then having that action copy properties into context 
variables, i.e.

  "" +
  |   "  " +
  |   "" +
  |   "  " +
  |   "  " +
  |   "" +
  |   "  " +
  |   "JBOSS_HOME/lib/jboss-${timestamp}.jar"+
  |   "  " +
  |   "" +
  |   "" +
  |   "" +  
  |   "" +
  |   "  " +
  |   "  " +
  |   ""

and in CopyActionHolder

 executionContext.getContextInstance().setVariable("backup", getBackup());

and

  "" +
  |   "  " +
  |   "" +
  |   " " +
  |   "  " +
  | "   JBOSSboo"+
  |   "  " +
  |   "   " +
  |   "  " +
  |   "  " +
  |   ""

then in MyActionHandler I can do 

Object object = executionContext.getContextInstance().getVariable("backup");

This approach works, but seems like a bit of a hack.

Thanks

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[JBoss-user] [JBoss jBPM] - Re: specifying context variables through the process definit

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We do not have a syntax for automatically substituting the value of a variable 
while initializing an action handler field. You can, however, interpret the 
literal from the process definition as a variable name and retrieve the 
variable value from the execution context:
public class MyActionHandler implements ActionHandler {
  | 
  |   private String source;
  | 
  |   public void execute(ExecutionContext executionContext) {
  | Object value = executionContext.getVariable(source);
  | // ... do something with the variable value
  |   }
  | }
Your process definition would specify the variable name rather than a specific 
value:

  |   pathToPatch
  | 
Regarding child processes, you can assign values from the variables of the 
parent process to the variables of the child process, but not literal values. 
In your scenario, you can pass the required values in variables and then use 
the above technique to access these values from action handlers.

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