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: 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 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

    Methods
    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.

    - ### 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,
                   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