NAME

       Class::Adapter::Builder - Generate Class::Adapter classes

VERSION

       version 1.09

SYNOPSIS

         package My::Adapter;

         use strict;
         use Class::Adapter::Builder
             ISA     => 'Specific::API',
             METHODS => [ qw{foo bar baz} ],
             method  => 'different_method';

         1;

DESCRIPTION

       "Class::Adapter::Builder" is another mechanism for letting you create Adapter classes of
       your own.

       It is intended to act as a toolkit for generating the guts of many varied and different
       types of Adapter classes.

       For a simple base class you can inherit from and change a specific method, see
       Class::Adapter::Clear.

   The Pragma Interface
       The most common method for defining Adapter classes, as shown in the synopsis, is the
       pragma interface.

       This consists of a set of key/value pairs provided when you load the module.

         # The format for building Adapter classes
         use Class::Adapter::Builder PARAM => VALUE, ...

       ISA The "ISA" param is provided as either a single value, or a reference to an "ARRAY"
           containing is list of classes.

           Normally this is just a straight list of classes. However, if the value for "ISA" is
           set to '_OBJECT_' the object will identify itself as whatever is contained in it when
           the "->isa" and "->can" method are called on it.

       NEW Normally, you need to create your "Class::Adapter" objects separately:

             # Create the object
             my $query = CGI->new( 'param1', 'param2' );

             # Create the Decorator
             my $object = My::Adapter->new( $query );

           If you provide a class name as the "NEW" param, the Decorator will do this for you,
           passing on any constructor arguments.

             # Assume we provided the following
             # NEW => 'CGI',

             # We can now do the above in one step
             my $object = My::Adapter->new( 'param1', 'param2' );

       AUTOLOAD
           By default, a "Class::Adapter" does not pass on any methods, with the methods to be
           passed on specified explicitly with the 'METHODS' param.

           By setting "AUTOLOAD" to true, the "Adapter" will be given the standard "AUTOLOAD"
           function to to pass through all unspecified methods to the parent object.

           By default the AUTOLOAD will pass through any and all calls, including calls to
           private methods.

           If the AUTOLOAD is specifically set to 'PUBLIC', the AUTOLOAD setting will ONLY apply
           to public methods, and any private methods will not be passed through.

       METHODS
           The "METHODS" param is provided as a reference to an array of all the methods that are
           to be passed through to the parent object as is.

       Any params other than the ones specified above are taken as translated methods.

         # If you provide the following
         # foo => bar

         # It the following are equivalent
         $decorator->foo;
         $decorator->_OBJECT_->bar;

       This capability is provided primarily because in Perl one of the main situations in which
       you hit the limits of Perl's inheritance model is when your class needs to inherit from
       multiple different classes that containing clashing methods.

       For example:

         # If your class is like this
         package Foo;

         use base 'This', 'That';

         1;

       If both "This->method" exists and "That->method" exists, and both mean different things,
       then "Foo->method" becomes ambiguous.

       A "Class::Adapter" could be used to wrap your "Foo" object, with the "Class::Adapter"
       becoming the "That" sub-class, and passing "$decorator->method" through to
       "$object->that_method".

METHODS

       Yes, "Class::Adapter::Builder" has public methods and later on you will be able to access
       them directly, but for now they are remaining undocumented, so that I can shuffle things
       around for another few versions.

       Just stick to the pragma interface for now.

SEE ALSO

       Class::Adapter, Class::Adapter::Clear

SUPPORT

       Bugs may be submitted through the RT bug tracker
       <https://rt.cpan.org/Public/Dist/Display.html?Name=Class-Adapter> (or
       bug-Class-Adapter@rt.cpan.org <mailto:bug-Class-Adapter@rt.cpan.org>).

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2005 by Adam Kennedy.

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