[slf4j-dev] [Bug 280] New: missing constructor in org.apache.log4j.PatternLayout

bugzilla-daemon at qos.ch bugzilla-daemon at qos.ch
Mon Nov 5 16:10:24 CET 2012


http://bugzilla.slf4j.org/show_bug.cgi?id=280

           Summary: missing constructor in org.apache.log4j.PatternLayout
           Product: SLF4J
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: log4j-over-slf4j
        AssignedTo: slf4j-dev at qos.ch
        ReportedBy: thomas.mortagne at gmail.com


It's in version 1.7.2 (can't find it in the list).

When using default org.apache.velocity.app.VelocityEngine (Velocity 1.7) it's
trying to create a new PatternLayout in it's LOG4J logger but it's using the
constructor which takes a String and this constructor is not provider by
log4j-over-slf4j.

It used to "work" well when there was no PatternLayout at all because Velocity
catch NoClassDefFoundError but it does not expect a NoSuchMethodError.

The workaround (and what should be done anyway) is to provide a SLF4J based
custom logger to Velocity. But still it would be nice to mimic a bit better
log4j for this use case.

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