nodevector.java

一个完整的XACML工程,学习XACML技术的好例子!

/*
* Copyright (c) 2006, University of Kent
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this 
* list of conditions and the following disclaimer.
* 
* Redistributions in binary form must reproduce the above copyright notice, 
* this list of conditions and the following disclaimer in the documentation 
* and/or other materials provided with the distribution. 
*
* 1. Neither the name of the University of Kent nor the names of its 
* contributors may be used to endorse or promote products derived from this 
* software without specific prior written permission. 
*
* 2. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS  
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
* PURPOSE ARE DISCLAIMED. 
*
* 3. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
* POSSIBILITY OF SUCH DAMAGE.
*
* 4. YOU AGREE THAT THE EXCLUSIONS IN PARAGRAPHS 2 AND 3 ABOVE ARE REASONABLE
* IN THE CIRCUMSTANCES.  IN PARTICULAR, YOU ACKNOWLEDGE (1) THAT THIS
* SOFTWARE HAS BEEN MADE AVAILABLE TO YOU FREE OF CHARGE, (2) THAT THIS
* SOFTWARE IS NOT "PRODUCT" QUALITY, BUT HAS BEEN PRODUCED BY A RESEARCH
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* TO USE IT, AND (3) THAT BECAUSE THIS SOFTWARE IS NOT OF "PRODUCT" QUALITY
* IT IS INEVITABLE THAT THERE WILL BE BUGS AND ERRORS, AND POSSIBLY MORE
* SERIOUS FAULTS, IN THIS SOFTWARE.
*
* 5. This license is governed, except to the extent that local laws
* necessarily apply, by the laws of England and Wales.
*/

/*
 * NodeVector.java 9/12/05
 */

package issrg.utils.xml;

import java.util.Vector;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * This class is a NodeList that can be changed. It is used to represent 
 * lists of nodes in the components.
 */
public class NodeVector extends Vector implements NodeList
{
    
    /** 
     * Creates a new instance of NodeVector 
     */
    public NodeVector() 
    {
    }
    
    /**
     * Returns the length of the NodeVector.
     *
     * @return the number of items in this NodeVector
     */ 
    public int getLength()
    {
        return size();
    }
    
    /**
     * Returns a node at a particular index.
     *
     * @param index  index of the node to retrieve.
     * @return       the node that was retrieved at the (index) location.
     */     
    public Node item(int index)
    {
        return (Node)get(index);
    }
}