[slf4j-dev] [Bug 168] New: Category.log(String FQCN, Priority p, Object msg, Throwable t) method throws UnsupportedOperationException

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.slf4j.org/show_bug.cgi?id=168

           Summary: Category.log(String FQCN, Priority p, Object msg,
                    Throwable t) method throws UnsupportedOperationException
           Product: SLF4J
           Version: 1.5.x
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: major
          Priority: P1
         Component: log4j-over-slf4j
        AssignedTo: slf4j-dev at qos.ch
        ReportedBy: listid at qos.ch


Seth Call reports:

http://www.qos.ch/pipermail/slf4j-user/2010-February/000889.html

It appears that but not certain that a logback appender is invoking a library
using log4j during its initialization which retrieves a NOPLogger.

See

http://www.qos.ch/pipermail/slf4j-user/2010-February/000892.html

Solution is to change the Category.log(String FQCN, Priority p, Object msg,
Throwable t) method from

public void log(String FQCN, Priority p, Object msg, Throwable t) {
     int levelInt = priorityToLevelInt(p);
     differentiatedLog(null, FQCN, levelInt, msg, t);
   }

public void log(String FQCN, Priority p, Object msg, Throwable t) {
  int levelInt = priorityToLevelInt(p);
  if (locationAwareLogger != null) {
    locationAwareLogger.log(null, FQCN, levelInt, convertToString(msg), t);
  } else {
    throw new UnsupportedOperationException("The logger [" + slf4jLogger
      + "] does not seem to be location aware.");
  }
}


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