jboost-cvs

[Aaron A. <aa...@us...>]

Update of /cvsroot/jboost/jboost/src/jboost/examples
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv14785

Added Files:
	BooleanAttribute.java BooleanDescription.java 
Log Message:
Adding another type, boolean

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

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

    private boolean value;

    public BooleanAttribute(boolean value) {this.value=value; setDefined();}
    public BooleanAttribute() { setDefined(false);}

    public boolean getValue() {return value;}

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



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

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

/**
 * the description for number attributes.
 */
class BooleanDescription extends AttributeDescription {
  BooleanDescription(String name, Configuration c) throws ClassNotFoundException {
    attributeName = name;
    attributeClass = Class.forName("jboost.examples.BooleanAttribute");
    
    //  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);
    order=c.getBool("order",true);
  }
  
  /** checks format of string in datafile and converts to int
   *  
   *  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 BooleanAttribute());
    string=string.trim();
    if(string.length()==0) return(new BooleanAttribute());
    boolean att = true; // initialized because try complains otherwise.
    try {
	if(string.equals("0") || string.toLowerCase().equals("false")) 
	    att = false;
    }
    catch (NumberFormatException e) {
      System.err.println(string + " is not a boolean.");
      throw new BadAttException(string+" is not a boolean",0,0);
    }
    return new BooleanAttribute (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+=((BooleanAttribute)attr).toString();
    return(retval);
  }
}