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UEL (modified JUEL)

Question asked by rdomingues on Feb 5, 2014
Latest reply on Feb 6, 2014 by frederikheremans1

From documentation you state:

"Activiti uses UEL for expression-resolving. UEL stands for Unified Expression Language and is part of the EE6 specification (see the EE6 specification for detailed information). To support all features of latest UEL spec on ALL environments, we use a modified version of JUEL."

My question is: do you have a formalization of this modified version. I'd be interest to know whether you have or not a syntax definition of what you're expecting in expression fields. Is a grammar available? Metamodel?

Is the jcc in this link suitable?
Pag 26, Section 1.24

Or  this grammar? (pag20, Section 1.19)

At this moment I'm rather interested in syntax formalization.