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From Apache Wiki <>
Subject [Jakarta-commons Wiki] Update of "SCXML/FrequentlyAskedQuestions" by RahulAkolkar
Date Tue, 14 Feb 2006 22:20:40 GMT
Dear Wiki user,

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The following page has been changed by RahulAkolkar:

The comment on the change is:
Related bonus questions, try to err towards gratuitous redundancy.

   * The ''Evaluator'' is a component with the capability of parsing and evaluating expressions.
It is the "expression language engine".
  Commons SCXML currently provide implementations for [
JEXL] and [
JSP 2.0 EL].
+ ==== Which expression languages does the Commons SCXML implementation support? ====
+  * [
+  * [
JSP 2.0 EL]
  ==== How do I try out the sample SCXML documents? ====
@@ -76, +81 @@

  A few examples are available as part of the [
Commons SCXML test suite] (look in env packages as well). Enjoy, and feedback is always welcome.
+ ==== Can I use more than one expression language in the same SCXML document? ====
+ No, the expressions throughout the document must be homogeneous. This also applies to any
external documents that may be refered by this document, for example via {{{src}}} attributes,
like so:
+ {{{
+ <state id="foo" src="foo.xml">
+   <!-- Something, possibly very interesting, here -->
+ </state>
+ }}}
+ Here, {{{foo.xml}}} must use the same expression language as the document above that hosts
the state {{{foo}}}.
  ==== How do I enable / control the logging within the Commons SCXML package? ====
  Commons SCXML uses Commons Logging. See the [
Commons Logging Website] for more details.

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