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From <Jan.Mate...@rzf.fin-nrw.de>
Subject AW: Ant log statements being created even when not used
Date Mon, 25 Sep 2006 13:37:03 GMT
Because the runtime does not know the current loglevel.
The RT forwards the (build) message to the registered Listeners.

Jan 

>-----Urspr√ľngliche Nachricht-----
>Von: Scott Stirling [mailto:scottstirling@gmail.com] 
>Gesendet: Montag, 25. September 2006 15:29
>An: Ant Developers List
>Betreff: Re: Ant log statements being created even when not used
>
>What's wrong with a guard statement that doesn't construct the 
>log message unless the log level at which the message is used 
>is enabled?
>
>i.e.:
>
>if (LOG.isDebugEnabled()) {
>    StringBuilder msg = new StringBuilder();
>    msg.append(etc....);
>    [...]
>    LOG.debug(msg.toString());
>}
>
>That's simple, don't you think? In my experience, the problem 
>of polluting "client" code with logging is a red herring and 
>not such a problem. More common are the problems of not enough 
>useful logging or too much logging, e.g., when every component 
>in an application stack is coded to log the same damn thing so 
>you wind up with massive stack traces logged multiple times by 
>well-meaning components that should often just be throwing 
>their exceptions up to a higher layer for logging and other handling.
>
>
>Scott Stirling
>Framingham, MA
>
>On 9/25/06, Kevin Jackson <foamdino@gmail.com> wrote:
>> Hi,
>> Remember early this year I had a problem with a build that basically 
>> ran out of memory and if I commented out logging code I could get it 
>> to run?
>>
>> http://www.digitalmars.com/d/lazy-evaluation.html
>>
>> This explains exactly the problem (and a solution for D), I 
>wonder if 
>> some solution exists for Java such that log statements are not as 
>> wasteful of resources as they currently are
>>
>> Kev
>>
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