07 Sep 2004 21:45:34 UTC
- Distribution: Class-MakeMethods
- Module version: 1.008
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- Latest versionEVO Matthew Simon Cavalletto
Class::MakeMethods::Template::ClassName - Access object's class
package MyObject; use Class::MakeMethods::Template::ClassName ( subclass_name => [ 'type' ] ); ... package main; my $object = MyObject->new; $object->type('Foo') # reblesses object to MyObject::Foo subclass print $object->type(); # prints "Foo".
These method types access or change information about the class an object is associated with.
Called without arguments, returns the class name.
If called with an argument, reblesses object into that class. If the class doesn't already exist, it will be created.
Called without arguments, returns the subclass name.
If called with an argument, reblesses object into that subclass. If the subclass doesn't already exist, it will be created.
The subclass name is written as follows:
if it's the original, defining class: empty
if its a a package within the namespace of the original: the distingushing name within that namespace, without leading
if it's a package elsewhere: the full name with leading
Provides a shared hash mapping keys to class names.
class_registry => [ qw/ foo / ]
Takes a single string or a reference to an array of strings as its argument. For each string, creates a new anonymous hash and associated accessor methods that will map scalar values to classes in the calling package's subclass hiearchy.
The accessor methods provide an interface to the hash as illustrated below. Note that several of these functions operate quite differently depending on the number of arguments passed, or the context in which they are called.
- @indexes = $class_or_ref->x;
Returns the scalar values that are indexes associated with this class, or the class of this object.
- $class = $class_or_ref->x( $index );
Returns the class name associated with the provided index value.
- @classes = $class_or_ref->x( @indexes );
Returns the associated classes for each index in order.
- @all_indexes = $class_or_ref->x_keys;
Returns a list of the indexes defined for this registry.
- @all_classes = $class_or_ref->x_values;
Returns a list of the classes associated with this registry.
- @all_classes = $class_or_ref->unique_x_values;
Returns a list of the classes associated with this registry, with no more than one occurance of any value.
- %mapping = $class_or_ref->x_hash;
Return the key-value pairs used to store this attribute
- $mapping_ref = $class_or_ref->x_hash;
Returns a reference to the hash used for the mapping.
- $class_or_ref->add_x( @indexes );
Adds an entry in the hash for each of the provided indexes, mapping it to this class, or the class of this object.
Removes those entries from the hash whose values are this class, or the class of this object.
- $class_or_ref->clear_xs( @indexes );
Remove all entries from the hash.
See Class::MakeMethods for general information about this distribution.
See Class::MakeMethods::Template for information about this family of subclasses.
Module Install Instructions
To install Class::MakeMethods, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell install Class::MakeMethods
For more information on module installation, please visit the detailed CPAN module installation guide.