validation::class::backwards(3pm) [debian man page]

Validation::Class::Backwards(3pm)			User Contributed Perl Documentation			 Validation::Class::Backwards(3pm)

NAME

       Validation::Class::Backwards - Backwards-Compatibility Layer for Validation::Class

VERSION

       version 7.70

SYNOPSIS

	   package SomeClass;

	   use Validation::Class;

	   package main;

	   my $class = SomeClass->new;

	   ...

	   1;

DESCRIPTION

       Validation::Class::Backwards is responsible for providing deprecated functionality to the Validation::Class::Prototype layer whilst clearly
       remaining separate via namespacing.

       Note: The methods described here will eventually become obsolete and cease to exist. Please review the namespace occasionally and adjust
       your code accordingly. Using methods defined here will generate warnings unless you unset the $ENV{'VALIDATION_CLASS_BC_WARNING'}
       environment variable.

METHODS

   error
       DEPRECATING:

       The error method is used to set and/or retrieve errors encountered during validation. The error method with no parameters returns the error
       message object which is an arrayref of error messages stored at class-level.

	   # set errors at the class-level
	   return $self->error('this isnt cool', 'unknown somethingorother');

	   # set an error at the field-level, using the field ref (not field name)
	   $self->error($field_object, "i am your error message");

	   # return all errors encountered/set as an arrayref
	   my $all_errors = $self->error();

       RECOMMENDED:

	   # see Validation::Class::Errors

	   # set errors at the class-level
	   return $self->errors->add(...);

	   # set an error at the field-level
	   $self->fields->{$field_name}->{errors}->add(...);

	   # return all errors encountered
	   my $list = $self->errors->list;

AUTHOR

       Al Newkirk <anewkirk@ana.io>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2011 by Al Newkirk.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2012-06-28					 Validation::Class::Backwards(3pm)

Class::ErrorHandler(3pm)				User Contributed Perl Documentation				  Class::ErrorHandler(3pm)

NAME

       Class::ErrorHandler - Base class for error handling

SYNOPSIS

	   package Foo;
	   use base qw( Class::ErrorHandler );

	   sub class_method {
	       my $class = shift;
	       ...
	       return $class->error("Help!")
		   unless $continue;
	   }

	   sub object_method {
	       my $obj = shift;
	       ...
	       return $obj->error("I am no more")
		   unless $continue;
	   }

	   package main;
	   use Foo;

	   Foo->class_method or die Foo->errstr;

	   my $foo = Foo->new;
	   $foo->object_method or die $foo->errstr;

DESCRIPTION

       Class::ErrorHandler provides an error-handling mechanism that's generic enough to be used as the base class for a variety of OO classes.
       Subclasses inherit its two error-handling methods, error and errstr, to communicate error messages back to the calling program.

       On failure (for whatever reason), a subclass should call error and return to the caller; error itself sets the error message internally,
       then returns "undef". This has the effect of the method that failed returning "undef" to the caller. The caller should check for errors by
       checking for a return value of "undef", and calling errstr to get the value of the error message on an error.

       As demonstrated in the SYNOPSIS, error and errstr work as both class methods and object methods.

USAGE

       Class->error($message)

       $object->error($message)

       Sets the error message for either the class Class or the object $object to the message $message. Returns "undef".

       Class->errstr

       $object->errstr

       Accesses the last error message set in the class Class or the object $object, respectively, and returns that error message.

LICENSE

       Class::ErrorHandler is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR &; COPYRIGHT
       Except where otherwise noted, Class::ErrorHandler is Copyright 2004 Benjamin Trott, cpan@stupidfool.org. All rights reserved.

perl v5.8.7							    2005-07-20						  Class::ErrorHandler(3pm)