Hello,
I am trying to implement a workflow that optionally executes an action based on
the existence of a configuration property. The property is a path to a script,
so I figured I could use fs:exists() to 'convert' the parameter to a Boolean,
and also validate the property at the same time.
Right now I have a decision node like this:
<decision name="run_hive_script">
<switch>
<case
to="hive_script">${fs:exists(wf:conf('wf_script_path'))}</case>
<default to="cleanup"/>
</switch>
</decision>
However in this example if 'wf_script_path' is not specified I get the error
'Exception in ActionStartXCommand java.lang.IllegalArgumentException: Can not
create a Path from an empty string'
Is there a generic EL function I can use that is not in the docs to get length
of the string or something I can use to build a Boolean expression?
Thank you,
Paul Chavez
