---
name: "Graph::Reader::XML"
section: "3pm"
platform: "linux"
package: "libgraph-readwrite-perl"
version: "2.10-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Graph::Reader::XML"
---

# Graph::Reader::XML(3pm)

class for reading a Graph instance from XML

## 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.

## REPOSITORY

\<https://github.com/neilb/Graph-ReadWrite\>

## AUTHOR

Neil Bowers \<neil@bowers.com\>

## COPYRIGHT

Copyright (c) 2001-2012, 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.