Ok, in v0.9.1, the Loader class was not used for loading the
log4j.proeprties file. It was loaded via the following static block in
the Category class:
/** Search for the properties file log4j.properties in the CLASSPATH.
*/
static {
String override = null;
try {
override=System.getProperty(DEFAULT_INIT_OVERRIDE_KEY, override);
} catch(SecurityException e) {
LogLog.debug("Could not read system property \""+
DEFAULT_INIT_OVERRIDE_KEY +"\".", e);
}
if(override == null || "false".equalsIgnoreCase(override)) {
ClassLoader loader = org.log4j.Category.class.getClassLoader();
if(loader == null) {
LogLog.debug(
"Could not find class loader. Skipping default
initialization.");
} else {
// We do not use the method getResources but use getResource
// instead in order to be compatible with JDK 1.1.x.
URL url = loader.getResource(DEFAULT_PROPERTIES_FILE);
if(url != null) {
PropertyConfigurator.configure(url);
}
}
}
}
Now, in v1.1.1, the log4j Loader class loads the log4j.properties file
via the ClassLoader object. When it gets the ClassLoader object, it
does so with a passed in reference to Object.class. As mentioned in my
prior email, it does not appear that the ClassLoader from a different
class can be retrieved (via a call to getClassLoader() ) from another
class' static block. This seems to be the case with SUNs and IBMs JVMs.
The end result is that log4j no longer picks up a log4j.properties file
that is located in the root of any classpath entry.
Dan
-----Original Message-----
From: Ceki Gülcü [mailto:[EMAIL PROTECTED]]
Sent: Saturday, May 26, 2001 2:26 AM
To: LOG4J Developers Mailing List
Subject: Re: Loader class
Dan,
I have read and re-read your mail. I still don't understand it. Regards,
Ceki
At 14:43 22.05.2001 -0400, you wrote:
>In the 0.9.1 version of log4j, the ClassLoader was retrieved via:
> ClassLoader loader = org.log4j.Category.class.getClassLoader();
>now it is retrieved like this:
> ClassLoader loader = clazz.getClassLoader();
>
>This allowed the log4j.properties file to be found anywhere in the
>classpath.
>
>It seems that the ClassLoader object can only be retrieved from a
static
>initiazation block of a class that is currently being loaded.
>
>For example: If we are in class A, and do:
> ClassLoader loader = A.class.getClassLoader(); it works
>but if we use any other class:
> ClassLoader loader = B.class.getClassLoader(); it does not work
>(returns null)
>
>So can the line:
> ClassLoader loader = clazz.getClassLoader();
>be changed to:
> ClassLoader loader = ClassLoader.class.getClassLoader();
>in some future version of log4j?
>
>Dan
>
>
>
>
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Ceki Gülcü
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