Add extension function for testing whether a variable is initialized
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Key: ODE-884
URL: https://issues.apache.org/jira/browse/ODE-884
Project: ODE
Issue Type: New Feature
Components: BPEL Runtime
Reporter: Aleksander Adamowski
One of the most painful BPEL limitations is the inability to test whether a
variable has been initialized.
I propose to implement a new expression language extension function (named
"initialized()") that would return true or false depending on whether the given
variable is initialized.
Obviously, the reference to an uninitialized variable in an argument list of
this function should be exempt from throwing a bpel:uninitializedVariable fault.
E.g.:
<bpel:variables>
<bpel:variable name="someNumberVar" type="xsd:int" />
</bpel:variables>
....
<bpel:if name="someConditional">
<bpel:condition><![CDATA[not
(initialized($someNumberVar))]]></bpel:condition>
... some activity....
</bpel:if>
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