[jboss-jira] [JBoss JIRA] (DROOLS-319) "Unknown boolean operator" RuntimeException

[David Tombs (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12921284#comment-12921284 ] 

David Tombs commented on DROOLS-319:
------------------------------------

OK, I updated the description.
                
> "Unknown boolean operator" RuntimeException
> -------------------------------------------
>
>                 Key: DROOLS-319
>                 URL: https://issues.jboss.org/browse/DROOLS-319
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 5.5.0.Final
>         Environment: Windows 8, java version "1.7.0_40"
>            Reporter: David Tombs
>            Assignee: Mark Proctor
>
> Steps to reproduce:
> # Create a decision table with something like {{fooString != ""}} in the constraint and {{true}} in the rule cell.
> # Execute the rule against a few objects.
> Actual Result:
> An internal Drools thread will crash with {{java.lang.RuntimeException: Unknown boolean operator}} when trying to compile {{fooString != "" == true}}.
> {noformat}
> Exception in thread "Thread-15" java.lang.RuntimeException: Unknown boolean operator
> 	at org.drools.rule.constraint.ConditionAnalyzer$AritmeticOperator.fromMvelOpCode(ConditionAnalyzer.java:1059)
> 	at org.drools.rule.constraint.ConditionAnalyzer.analyzeNode(ConditionAnalyzer.java:169)
> 	at org.drools.rule.constraint.ConditionAnalyzer.analyzeSingleCondition(ConditionAnalyzer.java:106)
> 	at org.drools.rule.constraint.ConditionAnalyzer.analyzeCondition(ConditionAnalyzer.java:99)
> 	at org.drools.rule.constraint.ConditionAnalyzer.analyzeCondition(ConditionAnalyzer.java:70)
> 	at org.drools.rule.constraint.MvelConditionEvaluator.getAnalyzedCondition(MvelConditionEvaluator.java:83)
> 	at org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:270)
> 	at org.drools.rule.constraint.MvelConstraint.access$200(MvelConstraint.java:51)
> 	at org.drools.rule.constraint.MvelConstraint$ConditionJitter.run(MvelConstraint.java:250)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> 	at java.lang.Thread.run(Thread.java:724)
> {noformat}
> Expected Result:
> Even if an Exception is thrown, the currently-thrown exception is too low level and took me lots of investigation and debugging inside the drools code to figure out what I did wrong.

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