ServiceLocationAttribute.java from SmartFrog at Krugle

Show ServiceLocationAttribute.java syntax highlighted

/** (C) Copyright 2007 Hewlett-Packard Development Company, LP

 Disclaimer of Warranty

 The Software is provided "AS IS," without a warranty of any kind. ALL
 EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE HEREBY
 EXCLUDED. SmartFrog is not a Hewlett-Packard Product. The Software has
 not undergone complete testing and may contain errors and defects. It
 may not function properly and is subject to change or withdrawal at
 any time. The user must assume the entire risk of using the
 Software. No support or maintenance is provided with the Software by
 Hewlett-Packard. Do not install the Software if you are not accustomed
 to using experimental software.

 Limitation of Liability

 TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL HEWLETT-PACKARD
 OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
 FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES,
 HOWEVER CAUSED REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF
 OR RELATED TO THE FURNISHING, PERFORMANCE, OR USE OF THE SOFTWARE, OR
 THE INABILITY TO USE THE SOFTWARE, EVEN IF HEWLETT-PACKARD HAS BEEN
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. FURTHERMORE, SINCE THE
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 BARGAIN MADE FOR ANY ASSUMPTIONS OF LIABILITY OR DAMAGES BY
 HEWLETT-PACKARD FOR ANY REASON WHATSOEVER, RELATING TO THE SOFTWARE OR
 ITS MEDIA, AND YOU HEREBY WAIVE ANY CLAIM IN THIS REGARD.

 */

package org.smartfrog.services.slp;

import java.util.*;

/**
 * This class describes the attributes used in service advertisements.
 *
 * @author Guillaume Mecheneau
 */
public class ServiceLocationAttribute {
  private String id;
  private Vector values;

/**
 * Constructor
 * @param id - The attribute name
 * @param values - Vector of one or more attribute values. Vector contents must be uniform in type
 * and one of Integer, String, Boolean, or byte[].
 * If the attribute is a keyword attribute, then values should be null.
 * @throws IllegalArgumentException if the id is null or empty.
 */
  public ServiceLocationAttribute(String id,
                                 Vector values) throws IllegalArgumentException {
   // System.out.println("Creating attribute "+ id + " with value = "+ values);
    if ((id == null) || (id.equals("")))
      throw new IllegalArgumentException(" Attribute id empty ");
    this.id = id;
    this.values = values;
  }

/**
 * A vector of attribute values, or null if the attribute is a keyword attribute.
 * If the attribute is single-valued, then the vector contains only one object.
 * @return a Vector of values for this attribute.
 */
  public Vector getValues(){
    if (values != null)
      return (Vector) values.clone();
    return null;
  }

/**
 * Return the attribute name.
 * @return the id of this attribute.
 */
  public String getId() {
    return id;
  }


/**
 * Return true if the object equals this attribute. The object and the attribute
 * are equal if:
 * - they both are ServiceLocationAttribute
 * - the ids are the same
 * - the two Vectors have the same content.
 * @param o the object to compare.
 */
  public boolean equals(Object o) {
    // check class
    if (o instanceof ServiceLocationAttribute) {
      // check attribute id
      ServiceLocationAttribute sla = (ServiceLocationAttribute) o;
      if (this.id == sla.getId()){
      // check if values is null
        Vector slaValues = sla.getValues();
        if (getValues() == null) {
          return (slaValues==null);
        } else {
        // then check values Vector size
          if (getValues().size() == slaValues.size()){
            // check values
            for (Enumeration e = getValues().elements() ; e.hasMoreElements() ; ){
              Object value = e.nextElement();
              if (!slaValues.contains(o)) return false;
            }
            return true;
          }// different sizes
        }//can't be reached
      }//different ids
    }// not the right class
    return false;
  }

/**
 * A string describing this ServiceLocationAttribute.
 * @return a String describing this attribute.
 */
  public String toString(){
    String res = id + "=";
    for (Enumeration e = values.elements(); e.hasMoreElements();){
      Object o = e.nextElement();
      res += o.toString();// + " of Type " + o.getClass()+ "; " ;
    }
    return res ;
  }


}
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