class::makemethods::composite(3pm) [debian man page]

MakeMethods::Composite(3pm)				User Contributed Perl Documentation			       MakeMethods::Composite(3pm)

NAME

       Class::MakeMethods::Composite - Make extensible compound methods

SYNOPSIS

	 package MyObject;
	 use Class::MakeMethods::Composite::Hash (
	   new => 'new',
	   scalar => [ 'foo', 'bar' ],
	   array => 'my_list',
	   hash => 'my_index',
	 );

DESCRIPTION

       This document describes the various subclasses of Class::MakeMethods included under the Composite::* namespace, and the method types each
       one provides.

       The Composite subclasses provide a parameterized set of method-generation implementations.

       Subroutines are generated as closures bound to a hash containing the method name and additional parameters, including the arrays of
       subroutine references that will provide the method's functionality.

   Calling Conventions
       When you "use" this package, the method names you provide as arguments cause subroutines to be generated and installed in your module.

       See "Calling Conventions" in Class::MakeMethods::Standard for more information.

   Declaration Syntax
       To declare methods, pass in pairs of a method-type name followed by one or more method names.

       Valid method-type names for this package are listed in "METHOD GENERATOR TYPES".

       See "Declaration Syntax" in Class::MakeMethods::Standard and "Parameter Syntax" in Class::MakeMethods::Standard for more information.

   About Composite Methods
       The methods generated by Class::MakeMethods::Composite are assembled from groups of "fragment" subroutines, each of which provides some
       aspect of the method's behavior.

       You can add pre- and post- operations to any composite method.

	 package MyObject;
	 use Class::MakeMethods::Composite::Hash (
	   new => 'new',
	   scalar => [
	     'foo' => {
	       'pre_rules' => [
		 sub {
		   # Don't automatically convert list to array-ref
		   croak "Too many arguments" if ( scalar @_ > 2 );
		 }
	       ],
	       'post_rules' => [
		 sub {
		   # Don't let anyone see my credit card number!
		   ${(pop)->{result}} =~ s/d{13,16}/****/g;
		 }
	       ],
	     }
	   ],
	 );

SEE ALSO

       See Class::MakeMethods for general information about this distribution.

       For distribution, installation, support, copyright and license information, see Class::MakeMethods::Docs::ReadMe.

perl v5.10.1							    2004-09-06					       MakeMethods::Composite(3pm)

MakeMethods::Autoload(3pm)				User Contributed Perl Documentation				MakeMethods::Autoload(3pm)

NAME

       Class::MakeMethods::Autoload - Declare generated subs with AUTOLOAD

SYNOPSIS

	 package MyObject;
	 use Class::MakeMethods::Autoload 'Standard::Hash::scalar';

	 package main;
	 my $obj = bless {}, 'MyObject';

	 $obj->foo("Foozle");
	 print $obj->foo();

DESCRIPTION

       This package provides a generate-on-demand interface to Class::MakeMethods.

       When your class uses this package, it imports an AUTOLOAD function that resolves missing methods by using Class::MakeMethods to generate
       and install a standard type of method.

       You must specify the type of method to be generated by passing a single argument to your use Class::MakeMethods::Autoload statement, which
       can take any of these forms:

       o   A Class::MakeMethods generator name and method type.

	   Here are three examples:

	     use Class::MakeMethods::Autoload 'Standard::Hash:scalar';

	     use Class::MakeMethods::Autoload 'Basic::Universal::no_op';

	     use Class::MakeMethods::Autoload
			   '::Class::MakeMethod::Composite::Global:array';

       o   A reference to a subroutine which will be called for each requested function name and which is expected to return the name of the
	   method generator to use.

	   Here's a contrived example which generates scalar accessors for methods except those with a digit in their name, which are treated as
	   globals.

	     use Class::MakeMethods::Autoload sub {
	       my $name = shift;
	       ( $name =~ /d/ ) ? 'Standard::Global::scalar'
				 : 'Standard::Hash::scalar'
	     };

       o   A reference to a hash which defines which method type to use based on the name of the requested method. If a key exists which is an
	   exact match for the requested function name, the associated value is used; otherwise, each of the keys is used as a regular expression,
	   and the value of the first one that matches the function name is used. (For regular expression matching, the keys are tested in reverse
	   length order, longest to shortest.)

	   Here's an example which provides a new() constructor, a DESTROY() method that does nothing, and a wildcard match that provides scalar
	   accessors for all other Autoloaded methods:

	     use Class::MakeMethods::Autoload {
	       'new'	 => 'Standard::Hash::new',
	       '.*'	 => 'Standard::Hash::scalar',
	       'DESTROY' => 'Standard::Universal::no_op',
	     };

	   Here's a more sophisticated example which causes all-upper-case method names to be generated as globals, those with a leading upper-
	   case letter to be generated as inheritable data methods, and others to be normal accessors:

	     use Class::MakeMethods::Autoload {
	       'new'	 => 'Standard::Hash::new',
	       '.*'	 => 'Standard::Hash::scalar',
	       '[A-Z].*' => 'Standard::Inheritable::scalar',
	       '[A-Z0-9]+' => 'Standard::Global::scalar',
	       'DESTROY' => 'Standard::Universal::no_op',
	     };

DIAGNOSTICS

       The following warnings and errors may be produced when using Class::MakeMethods::Attribute to generate methods. (Note that this list does
       not include run-time messages produced by calling the generated methods, or the standard messages produced by Class::MakeMethods.)

       No default method type; can't autoload
	   You must declare a default method type, generally by passing its name to a "use Class::MakeMethods::Autoload" statement, prior to
	   autoloading any methods.

       Construction of %s method %s failed to produce usable method
	   Indicates that Autoload succesfully called Class::MakeMethods->make to generate the requested method, but afterwards was not able to
	   invoke the generated method. You may have selected an incompatible method type, or the method may not have been installed sucesfully.

SEE ALSO

       See Class::MakeMethods for general information about this distribution.

       For distribution, installation, support, copyright and license information, see Class::MakeMethods::Docs::ReadMe.

perl v5.10.1							    2004-09-06						MakeMethods::Autoload(3pm)