Log::NullLogLite - The Log::NullLogLite class implements the Null Object pattern for the Log::LogLite class.
Log::NullLogLite
Log::LogLite
use Log::NullLogLite; # create new Log::NullLogLite object my $log = new Log::NullLogLite(); ... # we had an error (this entry will not be written to the log # file because we use Log::NullLogLite object). $log->write("Could not open the file ".$file_name.": $!", 4);
The Log::NullLogLite class is derived from the Log::LogLite class and implement the Null Object Pattern to let us to use the Log::LogLite class with null Log::LogLite objects. We might want to do that if we use a Log::LogLite object in our code, and we do not want always to actually define a Log::LogLite object (i.e. not always we want to write to a log file). In such a case we will create a Log::NullLogLite object instead of the Log::LogLite object, and will use that object instead. The object has all the methods that the Log::LogLite object has, but those methods do nothing. Thus our code will continue to run without any change, yet we will not have to define a log file path for the Log::LogLite object, and no log will be created.
The constructor. The parameters will not have any affect. Returns the new Log::NullLogLite object.
Does nothing. The parameters will not have any affect. Returns nothing.
Does nothing. The parameters will not have any affect. Returns -1.
Does nothing. The parameters will not have any affect. Returns empty string ("").
Rani Pinchuk, rani@cpan.org
Copyright (c) 2001-2002 Ockham Technology N.V. & Rani Pinchuk. All rights reserved. This package is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Log::LogLite(3), The Null Object Pattern - Bobby Woolf - PLoP96 - published in Pattern Languages of Program Design 3 (http://cseng.aw.com/book/0,,0201310112,00.html)
1 POD Error
The following errors were encountered while parsing the POD:
You forgot a '=back' before '=head1'
To install Log::LogLite, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Log::LogLite
CPAN shell
perl -MCPAN -e shell install Log::LogLite
For more information on module installation, please visit the detailed CPAN module installation guide.