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The following page has been changed by SimonKitching: http://wiki.apache.org/jakarta-commons/Logging/StaticLog The comment on the change is: Add info about fixing existing code ------------------------------------------------------------------------------ actually turns up logging to debug on ''all'' applications, though output from applications other than the one of interest is then suppressed again before being output. + == Fixing Existing Library Code == + + If you already have some library-type code that uses static log objects, and want to fix it after reading + this page, be careful of one issue: changing a static member to a non-static one changes the + serialization format of the class. The serialVersionUID of the class must change, and + as a result serialized versions of the old class will not load. + + A possible (untested) alternative is to add a method like this: + {{{ + private transient Log log; + private Log getLog() { + if (log == null) + log=LogFactory.getLog(Some.class); + return log; + } + + // old code + // log.debug("foo"); + + // new code + getLog().debug("foo"); + }}} + + Like static members, transient ones are not part of the serialized data so this should be + a serialization-compatible change. + --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
