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## 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.

Version:
  $Revision: 1.7 $ - 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
`BIFParser(java.io.InputStream instream, FastVector nodes, FastVector edges)` Constructor (if our input is an InputStream)
`BIFParser(java.lang.String input, FastVector nodes, FastVector edges)` Constructor (if our input is a String)

Method Summary
`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, FastVector nodes, FastVector 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 Detail

### BIFParser

    public BIFParser(java.lang.String input,
                     FastVector nodes,
                     FastVector 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,
                     FastVector nodes,
                     FastVector 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,
                                     FastVector nodes,
                                     FastVector 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

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