/ 
OOTools-2.41
River stage two • 10 direct dependents • 13 total dependents
/ Package::groups

NAME

Object::groups - Pragma to implement group of properties

VERSION 2.40

Included in OOTools 2.21 distribution.

The latest versions changes are reported in the Changes file in this distribution.

The distribution includes:

Package::props

Pragma to implement lvalue accessors with options

Package::groups

Pragma to implement groups of properties accessors with options

Class::constr

Pragma to implement constructor methods

Class::props

Pragma to implement lvalue accessors with options

Class::groups

Pragma to implement groups of properties accessors with options

Class::Error

Delayed checking of object failure

Class::Util

Class utility functions

Object::props

Pragma to implement lvalue accessors with options

Object::groups

Pragma to implement groups of properties accessors with options

INSTALLATION

Prerequisites
Perl version >= 5.6.1
CPAN
perl -MCPAN -e 'install OOTools'
Standard installation

From the directory where this file is located, type:

perl Makefile.PL
make
make test
make install

DESCRIPTION

This pragma is very similar to the Class::groups pragma: the main difference is the underlying variable that holds the value, which is a global hash in the caller package instead in the class. For example:

package BaseClass;
use Package::groups 'a_package_group';
use Class::groups 'a_class_group';

package SubClass;
our @ISA = 'BaseClass';

# underlaying hash for accessor 'a_package_group' is
# %BaseClass::a_package_group
# underlaying hash for accessor 'a_class_group' is
# %SubClass::a_class_group;

This might seem a subtle difference, but the possible usage in inherited classes makes a big difference.

While you can also call a package group accessor by statically using the implementing package name (e.g. BaseClass-a_group>), regardless the subclass that uses it, overridden package accessor groups don't inherit defaults as Class accessors do.

See the documentation of the accessor groups in Class::groups for all the details.

SUPPORT and FEEDBACK

If you need support or if you want just to send me some feedback or request, please use this link: http://perl.4pro.net/?Object::groups.

AUTHOR and COPYRIGHT

Copyright 2004-2005 by Domizio Demichelis.

All Rights Reserved. This module is free software. It may be used, redistributed and/or modified under the same terms as perl itself.

CREDITS

Thanks to Juerd Waalboer (http://search.cpan.org/author/JUERD) that with its Attribute::Property inspired the creation of this distribution.