jifty::logger::eventappender(3pm) [debian man page]

Jifty::Logger::EventAppender(3pm)			User Contributed Perl Documentation			 Jifty::Logger::EventAppender(3pm)

NAME

       Jifty::Logger::EventAppender - Create Jifty events from log directives

SYNOPSIS

       In a log4perl config file:

	   log4perl.appender.Event=Jifty::Logger::EventAppender
	   log4perl.appender.Event.class=YourApp::Event::Log
	   log4perl.appender.Event.arbitraryData=42
	   log4perl.appender.Event.layout=SimpleLayout

DESCRIPTION

       This class is a Log::Log4perl-compatible appender which creates Jifty::Event::Log objects when a logging instruction is received.

METHODS

   new PARAMHASH
       The "class" configuration parameter controls the class of the event to create.  It defaults to Jifty::Event::Log.  All other parameters are
       passed through to the event when it is created.

   log PARAMHASH
       Creates an instance of the event with all of the configuration parameters set in the log4perl config file, as well as all of the contents
       of the "PARAMHASH" -- see Log::Log4perl::Appender for details of the arguments therein.

perl v5.14.2							    2010-09-25					 Jifty::Logger::EventAppender(3pm)

Filter::Boolean(3pm)					User Contributed Perl Documentation				      Filter::Boolean(3pm)

NAME

       Log::Log4perl::Filter::Boolean - Special filter to combine the results of others

SYNOPSIS

	   log4perl.logger = WARN, AppWarn, AppError

	   log4perl.filter.Match1	= sub { /let this through/ }
	   log4perl.filter.Match2	= sub { /and that, too/ }
	   log4perl.filter.MyBoolean	   = Log::Log4perl::Filter::Boolean
	   log4perl.filter.MyBoolean.logic = Match1 || Match2

	   log4perl.appender.Screen	   = Log::Dispatch::Screen
	   log4perl.appender.Screen.Filter = MyBoolean
	   log4perl.appender.Screen.layout = Log::Log4perl::Layout::SimpleLayout

DESCRIPTION

       Sometimes, it's useful to combine the output of various filters to arrive at a log/no log decision. While Log4j, Log4perl's mother ship,
       chose to implement this feature as a filter chain, similar to Linux' IP chains, Log4perl tries a different approach.

       Typically, filter results will not need to be passed along in chains but combined in a programmatic manner using boolean logic. "Log if
       this filter says 'yes' and that filter says 'no'" is a fairly common requirement but hard to implement as a chain.

       "Log::Log4perl::Filter::Boolean" is a special predefined custom filter for Log4perl which combines the results of other custom filters in
       arbitrary ways, using boolean expressions:

	   log4perl.logger = WARN, AppWarn, AppError

	   log4perl.filter.Match1	= sub { /let this through/ }
	   log4perl.filter.Match2	= sub { /and that, too/ }
	   log4perl.filter.MyBoolean	   = Log::Log4perl::Filter::Boolean
	   log4perl.filter.MyBoolean.logic = Match1 || Match2

	   log4perl.appender.Screen	   = Log::Dispatch::Screen
	   log4perl.appender.Screen.Filter = MyBoolean
	   log4perl.appender.Screen.layout = Log::Log4perl::Layout::SimpleLayout

       "Log::Log4perl::Filter::Boolean"'s boolean expressions allow for combining different appenders by name using AND (&& or &), OR (|| or |)
       and NOT (!) as logical expressions. Parentheses are used for grouping. Precedence follows standard Perl. Here's a bunch of examples:

	   Match1 && !Match2		# Match1 and not Match2
	   !(Match1 || Match2)		# Neither Match1 nor Match2
	   (Match1 && Match2) || Match3 # Both Match1 and Match2 or Match3

SEE ALSO

       Log::Log4perl::Filter, Log::Log4perl::Filter::LevelMatch, Log::Log4perl::Filter::LevelRange, Log::Log4perl::Filter::StringRange

COPYRIGHT AND LICENSE

       Copyright 2002-2009 by Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>.

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

perl v5.10.1							    2010-07-21						      Filter::Boolean(3pm)