Hi
I have been using log4j for 2 days now, and I dare to make a comment:), but first some background: I had to make a subclass of Category, in order to log my exceptions my way. Then I made an ExceptionCategoryFactory. At first this seemed to work (maybe because I was using rootCategory??), but suddenly I got "ClassCastException". It was impossible to debug, because the error was probably caused before runtime? (that is, in the static blocks, class initialization) However, I suspected it had to do with log4j. I tried a lot, and read the "short introduction" over and over again:) Then, at last, I got the bright idea to check the javadoc for PropertyConfigurator: Class Factories In case you are using your own subtypes of the Category class and wish to use configuration files, then you must set the categoryFactory for the subtype that you are using. The syntax is: log4j.categoryFactory=fully.qualified.name.of.categoryFactory.class Even though it had worked (hadn't it?) before, I was pretty sure that *this* was my problem. I first tried to write my Factory with a .class extension, but that was obviously wrong (why add that .class in the javadoc?) At last it worked! Some comments/questions: 1) I doesn't seem to logical to have "log4j.categoryFactory" as a key, when (if) you have multiple factories. Will it work? Wouldn't it be more intuitive to have "log4j.<category>.factory" as the key? 2) Why did I get a ClassCastException, and not an error message telling me that I was missing a key-value pair in the propertyfile? 3) Why do we need to add this property at all? Does it have to be this way? I also spend some time before I got the clue about how to override additivity. My intuition said something like this: log4j.category.<mycat>.additivity=false correct answer is: log4j.additivity.<mycat>=false. However, the correct answer is only (I think!) to be found in the example in the PropertyConfigurator-javadoc. BUT!! Log4j works wonderfully AND I'm very pleased with it. Thank you to all of you that has worked with it! My comments are probably not very well formed, and the best way to view them, is from at newbie's perspective. Any comments are appreciated. mvh Morten Simonsen --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
