[logback-dev] [JIRA] Created: (LBCLASSIC-103) Accidental incompatible joran syntax for evaluator filters

Michael Franz (JIRA) noreply-jira at qos.ch
Wed Jan 7 15:31:38 CET 2009

Accidental incompatible joran syntax for evaluator filters

                 Key: LBCLASSIC-103
                 URL: http://jira.qos.ch/browse/LBCLASSIC-103
             Project: logback-classic
          Issue Type: Bug
          Components: joran
    Affects Versions: 0.9.14
            Reporter: Michael Franz
            Assignee: Logback dev list

The release note for 0.9.14 states: "In addition, EvaluatorAction has been modified to accept evaluators of any type and not just instances of JaninoEvaluator."

Firstly: I could not found this documented within the manual.


The examples for evaluator filters within appenders from the manual do no longer work, e.g. logback-examples/src/main/java/chapter6/basicEventEvaluator.xml:

  <appender name="STDOUT"
    <filter class="ch.qos.logback.core.filter.EvaluatorFilter">
      <evaluator name="myEval">
    <layout class="ch.qos.logback.classic.PatternLayout">
        %-4relative [%thread] %-5level %logger - %msg%n

The error message is: |-ERROR in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - No class name attribute in [evaluator]

After adding class="ch.qos.logback.classic.boolex.JaninoEventEvaluator" to the evaluator tag it works. But this should not be required.

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