Graph::Reader::XML.3pm

Langue: en

Autres versions - même langue

Version: 2005-01-02 (ubuntu - 07/07/09)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Graph::Reader::XML - class for reading a Graph instance from XML

SYNOPSIS

     use Graph::Reader::XML;
     use Graph;
     
     $reader = Graph::Reader::XML->new();
     $graph = $reader->read_graph('mygraph.xml');

DESCRIPTION

Graph::Reader::XML is a perl class used to read a directed graph stored as XML, and return an instance of the Graph class.

The XML format is designed to support the Graph classes: it can be used to represent a single graph with a collection of nodes, and edges between those nodes. The graph, nodes, and edges can all have attributes specified,

Graph::Reader::XML is a subclass of Graph::Reader, which defines the generic interface for Graph reader classes.

METHODS

new()

Constructor - generate a new reader instance. 
     $reader = Graph::Reader::XML->new();

This doesn't take any arguments.

read_graph()

Read a graph from a file: 
     $graph = $reader->read_graph( $file );

The $file argument can be either a filename or a filehandle of a previously opened file.

KNOWN BUGS

Attribute values must be scalar. If they're not, well, you're on your own.

SEE ALSO

Graph::Reader
The base class for Graph::Reader::XML.
Graph::Writer::XML
Used to serialise a Graph instance as XML.
Graph
Jarkko Hietaniemi's classes for representing directed graphs.

AUTHOR

Neil Bowers <neil@bowers.com> Copyright (c) 2001-2005, Neil Bowers. All rights reserved. Copyright (c) 2001, Canon Research Centre Europe. All rights reserved.

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