[logback-dev] [Bug 19] New: In there is an error in the expession, JaninoEventEvaluatorBase throws an excpetion

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.qos.ch/show_bug.cgi?id=19

           Summary: In there is an error in the expession,
                    JaninoEventEvaluatorBase throws an excpetion
           Product: logback-classic
           Version: unspecified
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: Other
        AssignedTo: logback-dev at qos.ch
        ReportedBy: ceki at qos.ch


If there is an error in the expression passed to JaninoEventEvaluator, then
the JaninoEE will throw an excpetion, sometimes an NPE to higher levels. 
Loggers do not seem to catch the NPE, nor does EvaluatorFilter.

Here is a stack trace:

Exception in thread "main" java.lang.NullPointerException
        at
ch.qos.logback.core.boolex.JaninoEventEvaluatorBase.evaluate(JaninoEventEvaluatorBase.java:58)
        at
ch.qos.logback.core.filter.EvaluatorFilter.decide(EvaluatorFilter.java:48)
        at
ch.qos.logback.core.spi.FilterAttachableImpl.getFilterChainDecision(FilterAttachableImpl.java:68)
        at
ch.qos.logback.core.AppenderBase.getFilterChainDecision(AppenderBase.java:115)
        at ch.qos.logback.core.AppenderBase.doAppend(AppenderBase.java:65)
        at
ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:51)
        at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:286)
        at ch.qos.logback.classic.Logger.callAppenders(Logger.java:270)
        at ch.qos.logback.classic.Logger.filterAndLog(Logger.java:375)
        at ch.qos.logback.classic.Logger.debug(Logger.java:398)
        at chapter5.GoMDC.main(GoMDC.java:28)

The expresison is:

 <Expression>message.conts("I know me 1")</Expression>


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