XPath Expression As Action Parameters

A new feature in the latest edition of OpenGroupware Coils [0.1.49rc67] is support for using XPath expressions as parameters for work-flow actions. When a work-flow action parameter begins with $XPath: the input message (which must be XML) is interrogated for the corresponding value prior to the action being performed. Evaluation of the XPath is performed after label substution allowing wild cards to be used to construct the query expression.

One use-case where this is frequently useful is when processing the "current" message within a foreach construct.

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