NAME¶
Log::NullLogLite - The "Log::NullLogLite" class implements the Null
Object pattern for the "Log::LogLite" class.
SYNOPSIS¶
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);
DESCRIPTION¶
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.
CONSTRUCTOR¶
- new ( FILEPATH [,LEVEL [,DEFAULT_MESSAGE ]] )
- The constructor. The parameters will not have any affect. Returns the new
Log::NullLogLite object.
METHODS¶
- write( MESSAGE [, LEVEL ] )
- Does nothing. The parameters will not have any affect. Returns
nothing.
- level( [ LEVEL ] )
- Does nothing. The parameters will not have any affect. Returns -1.
- default_message( [ MESSAGE ] )
- Does nothing. The parameters will not have any affect. Returns empty
string ("").
AUTHOR¶
Rani Pinchuk, rani@cpan.org
COPYRIGHT¶
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.
