Hi Arthur,
Logback already offers a similar feature called automatic abbreviation
for logger names and for class names.
For example, the pattern "%logger{10}" will attempt to abbreviate the
logger name to 10 characters, thus the logger name
"mainPackage.sub.sample.Bar" will be printed as "m.s.s.Bar". The table
below from the Layout chapter [1] of the log4j manual lists other
examples.
Pattern Logger name Result
%logger mainPackage.sub.sample.Bar mainPackage.sub.sample.Bar
%logger{10} mainPackage.sub.sample.Bar m.s.s.Bar
%logger{15} mainPackage.sub.sample.Bar m.s.sample.Bar
%logger{16} mainPackage.sub.sample.Bar m.sub.sample.Bar
%logger{26} mainPackage.sub.sample.Bar mainPackage.sub.sample.Bar
Alternatively, logback makes it very easy (even easier than in log4j)
to define your own conversion patterns. See the section called
"Creating a custom conversion specifier" in the Layout chapter of the
logback manual.
I hope this helps,
[1] http://logback.qos.ch/manual/layouts.html
Arthur Blake wrote:
I'm using Logback on a new project. I like it a lot so far. Seems like
a leaner, tighter log4j. Pretty easy to learn quickly because it is so
similar to log4j in a lot of ways.
I'd like to see a feature in the PatternLayout where I can show just the
class name of the logger without its package prefix.
For example, if I have a logger named
com.mycompany.myapplication.myarea.Stuff
I'd like a version of the %logger conversion word that just outputs "Stuff"
(not "com.mycompany.myapplication.myarea.Stuff" or even "c.m.m.m.Stuff")
Most of my classes are unique across package names, and I'd like my log
output to be more concise in this way.
I'm not worried about being confused by name collisions because my
application is small enough that it's obvious what logger is involved in
my log output.
I've gotten around this so far by naming some of my logs with just the
class name without it's package, but I'd rather have a PatternLayout
conversion word or specifier to handle this.
Forgive me if this feature is already in the PatternLayout, but I
couldn't find it after looking pretty hard.
Arthur
--
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch
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