DO NOT REPLY [Bug 19137] New: - LogSystem NPE s

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=19137

LogSystem NPE s

           Summary: LogSystem NPE s
           Product: Velocity
           Version: 1.3.1
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Minor
          Priority: Other
         Component: Source
        AssignedTo: velocity-dev@jakarta.apache.org
        ReportedBy: elkner@linofee.org


Unfortunately, the used LogSystem is unstable.
1) SimpleLog4JSystems:
   - if runtime.log.logsystem.log4j.category is not set (default), the cast to
     string throws an NPE, when trying to init(), i.e. obtain the categoryname.
   - so first fix could be:
--
Object categoryname = o rsvc.getProperty("runtime.log.logsystem.log4j.category");

        if ( categoryname != null )
        {
            logger = Logger.getLogger( categoryname.toString() );
            ...
---
   - if null, same issue applies to the logfile stuff
   - furthermore internalInit( logfile ) would throw an NPE from
     java.io.FileOutputStream.<init>
   - finally a log is there, but uninitialized (i.e. useless) and
   - a misleading "PANIC: ..." message is thrown to stdout

almost the same counts for the Log4JLogSystem as well as the AvalonLogSystem ...

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