Support for XPath as further EL
-------------------------------
Key: SCXML-106
URL: https://issues.apache.org/jira/browse/SCXML-106
Project: Commons SCXML
Issue Type: Improvement
Affects Versions: 0.9
Reporter: Jaroslav Pullmann
Priority: Minor
Adding support for XPath (2.0?) as further expression language was already
suggested earlier [1].
Not aware, whether there is any ongoing development I'd ask for this important
enhancement.
Use cases:
- access to a wide range of built-in functions (count, matches)
- navigation with predicates involving string value tests:
Since XPathes are passed as arguments to the Data function
and JEXL does not provide for escaping quotes (see [2])
there is currently no way to express pathes like:
<assign location="Data(mydata,'list/it...@id=\'foo\']')" expr...
Top-level XPath expressions would enable such (more natural) navigation:
<assign location="/da...@id='mydata']/list/it...@id='foo']" expr...
[1] http://www.nabble.com/-scxml--%3Cassign%3E-tag-td4093525.html#a4103653
[2]
http://mail-archives.apache.org/mod_mbox/commons-user/200605.mbox/%[email protected]%3e
Many thanks
Jaro
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