Package weka.gui.graphvisualizer

Class DotParser

java.lang.Object

weka.gui.graphvisualizer.DotParser

All Implemented Interfaces:

GraphConstants

public class DotParser
extends Object
implements GraphConstants

This class parses input in DOT format, and builds the datastructures that are passed to it. It is NOT 100% compatible with the DOT format. The GraphNode and GraphEdge classes do not have any provision for dealing with different colours or shapes of nodes, there can however, be a different label and ID for a node. It also does not do anything for labels for edges. However, this class won't crash or throw an exception if it encounters any of the above attributes of an edge or a node. This class however, won't be able to deal with things like subgraphs and grouping of nodes.

Version:

$Revision: 10222 $ - 23 Apr 2003 - Initial version (Ashraf M. Kibriya)

Author:

Ashraf M. Kibriya (amk14@cs.waikato.ac.nz)

Field Summary

Fields inherited from interface weka.gui.graphvisualizer.GraphConstants

DIRECTED, DOUBLE, NORMAL, PLURAL_DUMMY, REVERSED, SINGULAR_DUMMY

Constructor Summary

Constructors

Constructor	Description
DotParser(Reader input, ArrayList<GraphNode> nodes, ArrayList<GraphEdge> edges)	Dot parser Constructor

Method Summary

Modifier and Type	Method	Description
String	parse()	This method parses the string or the InputStream that we passed in through the constructor and builds up the m_nodes and m_edges vectors
static void	writeDOT(String filename, String graphName, ArrayList<GraphNode> nodes, ArrayList<GraphEdge> edges)	This method saves a graph in a file in DOT format.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DotParser

public DotParser(Reader input,
 ArrayList<GraphNode> nodes,
 ArrayList<GraphEdge> edges)

Dot parser Constructor

Parameters:

input - - The input, if passing in a string then encapsulate that in String reader object

nodes - - Vector to put in GraphNode objects, corresponding to the nodes parsed in from the input

edges - - Vector to put in GraphEdge objects, corresponding to the edges parsed in from the input

Method Details

parse

public String parse()

This method parses the string or the InputStream that we passed in through the constructor and builds up the m_nodes and m_edges vectors

Returns:

- returns the name of the graph

writeDOT

public static void writeDOT(String filename,
 String graphName,
 ArrayList<GraphNode> nodes,
 ArrayList<GraphEdge> edges)

This method saves a graph in a file in DOT format. However, if reloaded in GraphVisualizer we would need to layout the graph again.

Parameters:

filename - - The name of the file to write in. (will overwrite)

graphName - - The name of the graph

nodes - - Vector containing all the nodes

edges - - Vector containing all the edges