weka.gui.graphvisualizer

Class BIFParser

java.lang.Object

weka.gui.graphvisualizer.BIFParser

All Implemented Interfaces:

GraphConstants

public class BIFParser
extends java.lang.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.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.String	graphName This holds the name of the graph (i.e. the name of network tag in XMLBIF input)
protected java.io.InputStream	inStream This holds the InputStream to be parsed
protected java.lang.String	inString This holds the string to be parsed
protected java.util.ArrayList<GraphEdge>	m_edges
protected java.util.ArrayList<GraphNode>	m_nodes These holds the nodes and edges of the graph

Fields inherited from interface weka.gui.graphvisualizer.GraphConstants

DIRECTED, DOUBLE, NORMAL, PLURAL_DUMMY, REVERSED, SINGULAR_DUMMY

Constructor Summary

Constructors

Constructor and Description
BIFParser(java.io.InputStream instream, java.util.ArrayList<GraphNode> nodes, java.util.ArrayList<GraphEdge> edges) Constructor (if our input is an InputStream)
BIFParser(java.lang.String input, java.util.ArrayList<GraphNode> nodes, java.util.ArrayList<GraphEdge> edges) Constructor (if our input is a String)

Method Summary

Modifier and Type	Method and Description
java.lang.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(java.lang.String filename, java.lang.String graphName, java.util.ArrayList<GraphNode> nodes, java.util.ArrayList<GraphEdge> edges) This method writes a graph in XMLBIF ver. 0.3 format to a file.

Methods inherited from class java.lang.Object

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

Field Detail

m_nodes

protected java.util.ArrayList<GraphNode> m_nodes

These holds the nodes and edges of the graph

m_edges

protected java.util.ArrayList<GraphEdge> m_edges

graphName

protected java.lang.String graphName

This holds the name of the graph (i.e. the name of network tag in XMLBIF input)

inString

protected java.lang.String inString

This holds the string to be parsed

inStream

protected java.io.InputStream inStream

This holds the InputStream to be parsed

Constructor Detail

BIFParser

public BIFParser(java.lang.String input,
                 java.util.ArrayList<GraphNode> nodes,
                 java.util.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(java.io.InputStream instream,
                 java.util.ArrayList<GraphNode> nodes,
                 java.util.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 Detail

parse

public java.lang.String parse()
                       throws java.lang.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:

java.lang.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

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

writeXMLBIF03

public static void writeXMLBIF03(java.lang.String filename,
                                 java.lang.String graphName,
                                 java.util.ArrayList<GraphNode> nodes,
                                 java.util.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