Donald Walters [
http://community.jboss.org/people/dondragon2] created the discussion
"Re: JBPM5 EL Expression"
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http://community.jboss.org/message/623341#623341
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Hi Maciej,
Based on your advice above I was able to make an implementation. This only works for
condition expressions at the moment. But, I have been having an issue with the
registration and usage of the dialect.
below is how I register it. This is done just before creating the KnoledgeBase
ProcessDialectRegistry.setDialect("jexl", new ELProcessDialect());
The xml is as follows:
<sequenceFlow id="case15" sourceRef="decision8"
targetRef="prompt9">
<conditionExpression xsi:type="tFormalExpression"
language="jexl"> ${response['resultSet'] != null &&
response['resultSet'][0][0] > 0} </conditionExpression>
</sequenceFlow>
But this does not work.
If do the following it works perfectly.
ProcessDialectRegistry.setDialect("mvel", new ELProcessDialect());
The xml is as follows:
<sequenceFlow id="case15" sourceRef="decision8"
targetRef="prompt9">
<conditionExpression xsi:type="tFormalExpression">
${response['resultSet'] != null &&
response['resultSet'][0][0] > 0} </conditionExpression>
</sequenceFlow>
I realize that from the core xml parser there are some checks for languages and anything
other than java, xpath, rule then there is an exception.
With some assistance I would be able to make the correct implementation and also for node
support.
Attached is source.
note: I used the Apache Commons JEXL 2.0.1 library
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