Thanks Jake,
It makes sense to me. I just want to confirm that I'm creating an instance
of LoggerX for each FQCN, just as I usually call Logger.getLogger to use
log4j directly. correct?
Thanks again,
Jeff
On 4/15/06, Jacob Kjome <[EMAIL PROTECTED]> wrote:
>
>
> No,
>
> FQCN only comes into play when you log something. It should be...
>
> public LoggerX(String loggerName) {
> logger = Logger.getLogger(loggerName);
> }
>
> Then, as in the example I provided, you would do this in the debug()
> method...
>
> public final void debug(String message, Throwable th) {
> logger.log(FQCN, Level.DEBUG, message, th);
> }
>
> You will need to create methods for each level you want to log to,
> equivalent to the debug() example I have provided.
>
> Make sense?
>
> Jake
>
> At 07:39 AM 4/15/2006, you wrote:
> >Jake,
> >So the constructor should read:
> >
> >
> > public LoggerX(String FQCN) {
> > logger = Logger.getLogger(FQCN);
> > }
> >
> >correct?
> >
> >Thanks
> >
> >Jeff
> >
> >On 4/14/06, Jacob Kjome <[EMAIL PROTECTED]> wrote:
> >>
> >>
> >> Whoops, I didn't mean to expose the Logger in the constructor. I
> >> meant that to be a Class or a String and then create the logger
> >> inside the constructor. Anyway, you get the idea.
> >>
> >> Jake
> >>
> >> At 08:34 PM 4/14/2006, you wrote:
> >> >
> >> >You shouldn't be extending Logger, but wrapping it. When you log,
> >> >pass the fully qualified class name (FQCN) of your wrapper to the
> >> >logger methods and your line numbers will work just fine. For
> >> instance...
> >> >
> >> >public class LoggerX implements Log {
> >> > /*
> >> > * Constant for name of class to use when recording caller
> >> > * of log method. Appending a dot at the end is recommended
> >> practice.
> >> > */
> >> > private static final String FQCN = LoggerX.class.getName() + ".";
> >> >
> >> > private final Logger logger;
> >> >
> >> > public LoggerX(Logger delegate) {
> >> > logger = delegate;
> >> > }
> >> >
> >> > public boolean isDebugEnabled() {
> >> > return logger.isDebugEnabled();
> >> > }
> >> >
> >> > public final void debug(String message) {
> >> > logger.log(FQCN, Level.DEBUG, message, null);
> >> > }
> >> >
> >> > ....
> >> > ....
> >> > ....
> >> >}
> >> >
> >> >
> >> >Jake
> >> >
> >> >At 06:38 PM 4/14/2006, you wrote:
> >> > >Some code I'm writing runs in two different environments. In one
> >> > >environment, I'm using log4j. In the other environment, the code
> calls
> >> that
> >> > >environment's logging system. Therefore, I need to subclass log4j's
> >> Logger
> >> > >so that I can implement an interface required by the other logging
> >> system.
> >> > >I have a solution working with one big drawback. The %F and %L
> >> specfied in
> >> > >the Appender's Conversion Pattern always return the same file and
> line
> >> > >number of my log4j subclass, not the class that originated the
> logging
> >> > >event.
> >> > >
> >> > >Is there a better solution to my inheritance dilemma? Or is there
> some
> >> way
> >> > >to pass log4j the file and line number arguments?
> >> > >
> >> > >Thanks!
> >> > >
> >> > >/* The Log interface is specified by the non-log4j
> >> environment. The methods
> >> > >have the same name as log4j. */
> >> > >public class LoggerX extends Logger implements Log {
> >> > > /**
> >> > > * @param arg0
> >> > > */
> >> > > public LoggerX( String arg0 ) {
> >> > > super( arg0 );
> >> > > parent = super.getLogger( arg0 );
> >> > > }
> >> > >
> >> > > static int logEnvironment = 0;
> >> > >
> >> > > final static int ENVIRONMENT_1 = 0;
> >> > >
> >> > > final static int ENVIRONMENT_2 = 1;
> >> > >
> >> > > // the log4j logger returned by super.getLogger
> >> > > Logger parent = null;
> >> > >
> >> > > public static LoggerX getLoggerForEnv( String arg0 ) {
> >> > > switch ( logEnvironment ) {
> >> > > case ENVIRONMENT_1 :
> >> > > return ( LoggerX ) OtherEnvironment.getLogger( );
> >> > >
> >> > > case ENVIRONMENT_2 :
> >> > > System.out.println( "creating new ENVIRONMENT_2
> logger"
> >> );
> >> > > return new LoggerX( arg0 );
> >> > >
> >> > > default :
> >> > > System.out.println( "************ UNKNOWN LOGGER
> TYPE:
> >> " +
> >> > >logEnvironment + " *************" );
> >> > > }
> >> > > return null;
> >> > > }
> >> > >
> >> > > /* this call produces the same file and line number regardless of
> >> the
> >> > >caller. I know why, but I don't have a solution. */
> >> > > public boolean info(String arg0) {
> >> > > parent.info( arg0);
> >> > > }
> >> > >
> >> > > public static void setEnvironmentTo1() {
> >> > > logEnvironment = ENVIRONMENT_1;
> >> > > }
> >> > >
> >> > > public static void setEnvironmentTo2() {
> >> > > logEnvironment = ENVIRONMENT_2;
> >> > > }
> >> > >}
> >> >
> >> >
> >> >---------------------------------------------------------------------
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> >> >
> >> >
> >> >
> >>
> >>
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> >>
> >>
>
>
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