Concatenate strings in BPMN

giorgimode Nov 20, 2014 7:27 AM

I would like to concatenate multiple string variables in BPMN inside 'Input Data Mapping' using expression, but so far it doesn't work. It always interprets the whole expression as string and does not apply any operators or methods. I have tried:

"bla" + variable

return ("bla" + variable);

getProcessVariable(variable)

Do I make something wrong, or is the Expression for Input Data Mappings buggy?

Is there any workaround? E.g. using a script task?

1. Re: Concatenate strings in BPMN

objectiser Nov 20, 2014 7:40 AM (in response to giorgimode)

Hi Giorgi

As this is specific to how to define a BPMN process within jBPM (the BPMN2 engine we use), you will probably have better luck getting an answer by posting the question to the jBPM forum - can be found here: jBPM - Open Source Business Process Management - Process engine

Regards
Gary
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2. Re: Concatenate strings in BPMN

giorgimode Nov 20, 2014 10:14 AM (in response to objectiser)

Found it:
<bpmn2:from xsi:type="bpmn2:tFormalExpression" id="_zV4PwenxEeKBkvsKLqPxuw"><![CDATA[You need to evaluate #{employee}.]]></bpmn2:from>
this is equivalent to

“You need to evaluate” + processInstance.getVariable(“employee”)
#{employee} was what I was looking for.
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