On Oct 19, 2005, at 8:03 AM, Rakesh Patel wrote:
Hi,
Been hearing about an imminent alpha 7 release for a few weeks now.
Any
news?
There have been a lot of changes from 1.2 to 1.3. The only reason I
opted for 1.3 is because of the ("some data {}", value) functionality.
Is it possible to retrofit that into 1.2? Moving to 1.3 seems quite
painful with all the changes.
Cheers
Rakesh
In http://marc.theaimsgroup.com/?l=log4j-dev&m=112917692022155&w=2,
Mark Womack provided a build for consideration to the log4j-dev list
and the PMC as a candidate to be 1.3 alpha 7. It isn't a release
since there hasn't been a vote yet and the eventual 1.3 alpha 7 may
be different (and may likely be due to bug 37122). However, if you
want to download the build and provide feedback, feel free.
One of the reasons that we are still calling 1.3 an alpha is the API
is subject to change and an systematic review of all the API changes
between 1.2 and 1.3 will be undertaken before freezing the API. I'm
not particularly fond of the particular way that formatting was
integrated in 1.3 and believe that using an independent logging
formatter class would result in equivalent performance and allow the
user to choose his formatter. The JDK provides other formatters
other than MessageFormat and the current log4j 1.3 doesn't implement
all of MessageFormat.
For example:
logger.debug("some data {}", value);
written using an external formatter would look like:
MessageFormatter.debug(logger, "some data {}", value);
The implementation of MessageFormatter would look something like:
public class MessageFormatter {
private MessageFormatter() {}
public static void debug(final Logger logger, final String fmt,
final Object param1) {
if (logger.isDebugEnabled()) {
logger.debug(MessageFormat.format(fmt, new Object[]
{ param1 }));
}
}
// repeated for other permutations
}
You could write a class for your own use now that would work with
either log4j 1.3 or log4j 1.2.
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