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Update of /cvsroot/jboost/jboost/src/jboost/examples
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv4508

Modified Files:
	AttributeDescription.java 
Added Files:
	IdDescription.java IntegerAttribute.java 
	IntegerDescription.java 
Log Message:
The beginnings of integer fields (shrink datasize by half) and ID attribute

Index: AttributeDescription.java
===================================================================
RCS file: /cvsroot/jboost/jboost/src/jboost/examples/AttributeDescription.java,v
retrieving revision 1.2
retrieving revision 1.3
diff -C2 -d -r1.2 -r1.3
*** AttributeDescription.java	2 Oct 2007 20:34:56 -0000	1.2
--- AttributeDescription.java	23 Oct 2007 22:44:54 -0000	1.3
***************
*** 33,36 ****
--- 33,37 ----
      if (name.equals(DataStream.LABELS_ATTR)) retval=new LabelDescription(name,options,okValues);
      else if (name.equals(DataStream.WEIGHT_ATTR)) retval= new WeightDescription(name, options);
+     //else if (name.equals(DataStream.ID_ATTR)) retval= new IdDescription(name, options);
      else if(type.equals("number")) retval=new NumberDescription(name,options);
      else if(type.equals("string")) retval=new StringDescription(name,options);

--- NEW FILE: IdDescription.java ---
package jboost.examples;

import jboost.controller.Configuration;
import jboost.tokenizer.BadAttException;

/**
 * The description for a private weight of each example.
 */
public class IdDescription extends IntegerDescription {

    public static final int MAX_ID = Integer.MAX_VALUE;

  IdDescription(String name, Configuration config, int default_val) 
  throws ClassNotFoundException {
    super(name,config);
  }

  /** 
   *  Reads an id 
   *  If no value is specified, default to 1
   *  If the value is negative, return 0 as the weight.
   *  If the value is greater than 1, return 1.
   * @param weight the string representation of the weight
   * @return Attribute the RealAttribute corresponding to the weight
   */
  public Attribute str2Att(String id) throws BadAttException {
    double att = 1.0; // initialized because try complains otherwise.    

    if (id != null) {
      id= id.trim(); 
      if (id.length() != 0) {
        try {
          att= Double.parseDouble(id);
        } catch (NumberFormatException nfe) {
          throw new BadAttException(id + " is not a float",0,0);          
        }
        if (att < 0) {
	    att= 0;
	    throw new BadAttException("The id: " + id + " is less than 0",0,0);          
        }
        if (att > MAX_ID) {
	    throw new BadAttException("The id: " + id + " is larger than MAX_ID=" + MAX_ID,0,0);          
        } 
      }
    }
    return new RealAttribute (att);
  }

}

--- NEW FILE: IntegerDescription.java ---
package jboost.examples;

import jboost.controller.Configuration;
import jboost.tokenizer.BadAttException;

/**
 * the description for number attributes.
 */
class IntegerDescription extends AttributeDescription {
  IntegerDescription(String name, Configuration c) throws ClassNotFoundException {
    attributeName = name;
    attributeClass = Class.forName("jboost.examples.IntegerAttribute");

//  Need to make a SAFE version of configuration, which implements an error() function, which
//  can return and error message.

    crucial=c.getBool("crucial",false);
    ignoreAttribute=c.getBool("ignoreAttribute",false);
    existence=c.getBool("existence",false);
    existence=c.getBool("order",true);
  }

  /** checks format of string in datafile and converts to float 
   *  
   *  If the attribute is missing it creates a new
   *  real attribute, that is not defined.
   */
  public Attribute str2Att(String string) throws BadAttException {
    if(string == null) return(new RealAttribute());
    string=string.trim();
    if(string.length()==0) return(new RealAttribute());
    double att = 0.; // initialized because try complains otherwise.
    try {
      att = Double.parseDouble(string);
    }
    catch (NumberFormatException e) {
      System.err.println(string + " is not a float.");
      throw new BadAttException(string+" is not a float",0,0);
    }
    return new RealAttribute (att);
  }

  public String toString() {
    String retval=new String(attributeName);
    retval+=" "+attributeClass.getName();
    retval+=" crucial: "+crucial;
    retval+=" ignoreAttribute: "+ignoreAttribute;
    retval+=" existence: "+existence;
    retval+=" order: "+order;
    return(retval);
  }

  public String toString(Attribute attr) {
    String retval=new String();
    if(attr==null) return("undefined");
    retval+=((RealAttribute)attr).toString();
    return(retval);
  }
}

--- NEW FILE: IntegerAttribute.java ---
package jboost.examples;

/** Represents a single real valued attribute */
public class IntegerAttribute extends Attribute {

    private int value;

    public IntegerAttribute(int value) {this.value=value; setDefined();}
    public IntegerAttribute() {defined=false;}

    public int getValue() {return value;}

    public String toString() {
	return this.isDefined() ? String.valueOf(value) : "undefined";
    }
}

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