Package weka.gui.graphvisualizer

Class BIFParser

java.lang.Object

weka.gui.graphvisualizer.BIFParser

All Implemented Interfaces:

GraphConstants

public class BIFParser
extends Object
implements GraphConstants

This class parses an inputstream or a string in XMLBIF ver. 0.3 format, and builds the datastructures that are passed to it through the constructor.

Version:

$Revision: 10153 $ - 24 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
BIFParser(InputStream instream, ArrayList<GraphNode> nodes, ArrayList<GraphEdge> edges)	Constructor (if our input is an InputStream)
BIFParser(String input, ArrayList<GraphNode> nodes, ArrayList<GraphEdge> edges)	Constructor (if our input is a String)

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	writeXMLBIF03(String filename, String graphName, ArrayList<GraphNode> nodes, ArrayList<GraphEdge> edges)	This method writes a graph in XMLBIF ver.

Methods inherited from class java.lang.Object

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

Constructor Details

BIFParser

public BIFParser(String input,
 ArrayList<GraphNode> nodes,
 ArrayList<GraphEdge> edges)

Constructor (if our input is a String)

Parameters:

input - the string to be parsed (should not be null)

nodes - vector containing GraphNode objects (should be empty)

edges - vector containing GraphEdge objects (should be empty)

BIFParser

public BIFParser(InputStream instream,
 ArrayList<GraphNode> nodes,
 ArrayList<GraphEdge> edges)

Constructor (if our input is an InputStream)

Parameters:

instream - the InputStream to be parsed (should not be null)

nodes - vector containing GraphNode objects (should be empty)

edges - vector containing GraphEdge objects (should be empty)

Method Details

parse

public String parse()
             throws Exception

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

Throws:

Exception - if both the inString and inStream are null, i.e. no input has been provided

BIFFormatException - if there is format of the input is not correct. The format should conform to XMLBIF version 0.3

NumberFormatException - if there is an invalid char in the probability table of a node.

writeXMLBIF03

public static void writeXMLBIF03(String filename,
 String graphName,
 ArrayList<GraphNode> nodes,
 ArrayList<GraphEdge> edges)

This method writes a graph in XMLBIF ver. 0.3 format to a file. However, if is reloaded in GraphVisualizer we would need to layout the graph again to display it correctly.

Parameters:

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

graphName - The name of the graph. (will be the name of network tag in XMLBIF)

nodes - Vector containing all the nodes

edges - Vector containing all the edges