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https://issues.apache.org/jira/browse/SCXML-106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12688925#action_12688925
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Rahul Akolkar commented on SCXML-106:
-------------------------------------
Payload is obtained like so:
$_eventdata
For example, if payload is the String "world", then:
<log expr="concat('Hello ', $_eventdata)"/>
Ofcourse, if the payload is a DOM node, then things can become even more
interesting since you can XPath into the payload itself.
Please move any further discussion to the mailing list.
> 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
> Fix For: 1.0
>
>
> 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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