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From chetan.v.minaj...@jpmchase.com
Subject Help - using a wrapper for log4j
Date Tue, 22 Aug 2006 10:02:15 GMT

I have a class that holds a reference to Log4j's logger in it.I call this 

The intention of using this and not Logger(log4j's Logger) directly is to 
keep my code as independent of  log4j as possible.
This LoggerWrapper has methods called logDebug(Object description)
i.e logXXX(Object description) for all 5 levels of logging.

The implementation is very straight forward,like this

logDebug(Object desc) {
        logger.debug(desc); //logger is an instance of LoggerWrapper and 
of type org.apache.log4j.Logger

Now the problem.....
In all my source code where there is a need to log i do it in this fashion
LoggerWrapper.logDebug(Object  tobeLogged)

In doing so the log files that are generated always have the first line as 
line #13,line #18 etc that refer to  where logger.xxx() methods are being 
used in LoggerWrapper's logXXX methods.
This line number is of no help to me at all since it always gives me the 
LoggerWrapper's line number.

What I actually need is that it should reflect the lines of the actual 
java file where i called LoggerWrapper.logDebug(Object tobeLogged)

I have just pasted one such line from my log file here
2006 08 01 16:33:14:072 BST DEBUG - 
-Setting ibatis template

Can you kindly tell me what I should do so that the line number that i get 
is the line from where i issued this debug statement and not the line 
number from my wrapper class.

I am now not even sure that my approach was right although the intention 
behind was to be not too reliant on any particular implementation of 

Look foward to solutions to tackle this problem.If there is a fundamental 
flaw in the way this has been designed look forward to some help in 
getting this sorted out.

I could adopt Commons logging on top of log4j.That is one option.But is 
there a way to mend this itself so I get logs which are more 
informative(reflect the actual line nos) ?


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