#!/usr/bin/perl
######################################################################
# override_appender -- 2003, Mike Schilli <m@perlmeister.com>
######################################################################
# Overrided the appender layout after defining it in the conf file.
######################################################################
use strict;
use warnings;

my  $VERSION = "0.01";
our $CVSVERSION = '$Revision: 1.1 $';

use Log::Log4perl qw(:easy);
Log::Log4perl->init(\ <<'EOT');
  log4perl.category = WARN, Screen
  log4perl.appender.Screen   = Log::Log4perl::Appender::Screen
  log4perl.appender.Screen.layout = \
      Log::Log4perl::Layout::PatternLayout
  log4perl.appender.Screen.layout.ConversionPattern = %d %F{1} %L> %m %n
EOT

my $appenders = Log::Log4perl->appenders();
my $layout = Log::Log4perl::Layout::PatternLayout->new("%m %m%n");
$appenders->{Screen}->layout($layout);
WARN("test message");

__END__

=head1 NAME

    override_appender - Try to change an appender's layout

=head1 SYNOPSIS

    override_appender

=head1 DESCRIPTION

Change an appender's layout after it has been defined in the configuration
file.

=head1 LICENSE

Copyright 2002-2013 by Mike Schilli E<lt>m@perlmeister.comE<gt> 
and Kevin Goess E<lt>cpan@goess.orgE<gt>.

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself. 

=head1 AUTHOR

Please contribute patches to the project on Github:

    http://github.com/mschilli/log4perl

Send bug reports or requests for enhancements to the authors via our

MAILING LIST (questions, bug reports, suggestions/patches): 
log4perl-devel@lists.sourceforge.net

Authors (please contact them via the list above, not directly):
Mike Schilli <m@perlmeister.com>,
Kevin Goess <cpan@goess.org>

Contributors (in alphabetical order):
Ateeq Altaf, Cory Bennett, Jens Berthold, Jeremy Bopp, Hutton
Davidson, Chris R. Donnelly, Matisse Enzer, Hugh Esco, Anthony
Foiani, James FitzGibbon, Carl Franks, Dennis Gregorovic, Andy
Grundman, Paul Harrington, Alexander Hartmaier  David Hull, 
Robert Jacobson, Jason Kohles, Jeff Macdonald, Markus Peter, 
Brett Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope, 
Lars Thegler, David Viner, Mac Yang.