Thanks. I thought so.. Was just sure when using jcl-over-sl4j -> sl4j.. I will get rid of all commons-logging :)
On Thu, Feb 7, 2013 at 1:45 PM, Richard Sand <[email protected]> wrote: > Hi Kristian – yes, when adding two strings together, java does that > automatically because the new concatenated string is the actual parameter > you are passing, so it happens before you enter the log method. By using > the varargs calling convention, the concatenation is postponed until after > the method is entered. > > > > Best regards, > > > > Richard Sand | Managing Director > PO Box 91824 | Austin | Texas 78709-1824 | USA > Office: +1 888 612 8820 ext 02 | Fax: +1 866 304 3754 > Mobile: +1 267 984 3651 > > [image: logo - small] > > > > *From:* [email protected] [mailto:[email protected]] *On > Behalf Of *Kristian Lind > *Sent:* Thursday, February 07, 2013 4:36 PM > *To:* logback users list > *Subject:* Re: [logback-user] commons-logging -> sl4j -> logback > > > > And that is of cause no matter if there is sl4j behind the commons-logging > I guess ? > > On Thu, Feb 7, 2013 at 1:11 PM, Brett Walker <[email protected]> > wrote: > > With log.debug("The object is " + object), it will always call .toString() > on object because the string argument needs to be constructed before the > call to .debug(). > > > > To avoid this use either > > > > If (log.isDebugEnabled()) { > > Log.debug("The object is " + object); > > } > > > > Or the slf/logback usage > > > > Log.debug("The object is {0}", object); > > > > Which will delay the call to .toString() until it has determined that > debug logging is needed. > > > > Brett > > Sent from my iPad > > > On 08/02/2013, at 7:43 AM, "Kristian Lind" <[email protected]> wrote: > > In a previous project I switched from commons-logging -> log4j to sl4j -> > logback. > One of the reasons I did that was the overhead in log4j when providing a > object in the log... > log.debug("This is a object" + object); > would cause the object.toString to be called even debug was not enabled. > > Now I work on a new project that uses commons-logging -> sl4j -> logback > (jcl-over-slf4j) > > My question is now, will this still call object.toString.. even debug is > not enabled > > import org.apache.commons.logging.Log; > import org.apache.commons.logging.LogFactory; > .... > log.debug("This is a object" + object); > > I would like to get rid of commons-logging and jcl-over.sl4j and only have > sl4j and logback. > > > > > > _______________________________________________ > Logback-user mailing list > [email protected] > http://mailman.qos.ch/mailman/listinfo/logback-user > > > _______________________________________________ > Logback-user mailing list > [email protected] > http://mailman.qos.ch/mailman/listinfo/logback-user > > > > > > -- > Med venlig hilsen / Best regards > > Kristian Lind > > _______________________________________________ > Logback-user mailing list > [email protected] > http://mailman.qos.ch/mailman/listinfo/logback-user > -- Med venlig hilsen / Best regards Kristian Lind
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