keyedreference.java

来自「可以实现UDDI」· Java 代码 · 共 180 行

/*
 * The source code contained herein is licensed under the IBM Public License
 * Version 1.0, which has been approved by the Open Source Initiative.
 * Copyright (C) 2001, International Business Machines Corporation
 * All Rights Reserved.
 *
 */

package org.uddi4j.util;

import org.uddi4j.UDDIElement;
import org.uddi4j.UDDIException;
import org.w3c.dom.Element;

/**
 * Represents the keyedReference element within the UDDI version 2.0 schema.
 * This class contains the following types of methods:
 * 
 * <ul>
 *   <li>A constructor that passes the required fields.
 *   <li>A Constructor that will instantiate the object from an appropriate XML
 *       DOM element.
 *   <li>Get/set methods for each attribute that this element can contain.
 *   <li>A get/setVector method is provided for sets of attributes.
 *   <li>A SaveToXML method that serializes this class within a passed in
 *       element.
 * </ul>
 * 
 * Typically, this class is used to construct parameters for, or interpret
 * responses from, methods in the UDDIProxy class.
 *
 * <p><b>Element description:</b>
 * <p>Service element.  Represents a namespace qualified name-value
 * pair.  Depending upon the context in which it is used, this structure can be
 * utilized within different convention frameworks.
 *
 * @author David Melgar ([e-mail])
 */
public class KeyedReference extends UDDIElement
{
    public static final String UDDI_TAG = "keyedReference";

    protected Element base = null;

    String tModelKey = null;
    String keyName = null;
    String keyValue = null;

    /**
     * Default constructor.
     * Avoid using the default constructor for validation. It does not validate
     * required fields. Instead, use the required fields constructor to perform
     * validation.
     */
    public KeyedReference() {
    }

    /**
     * Construct the object with required fields.
     *
     * @param keyName  String
     * @param keyValue String
     */
    public KeyedReference(String keyName,
                          String keyValue) {
        this.keyName = keyName;
        this.keyValue = keyValue;
    }

    public KeyedReference(String keyName, String keyValue, String tModelKey) {
        this(keyName, keyValue);
        this.tModelKey = tModelKey;
    }

    /**
     * Construct the object from a DOM tree. Used by
     * UDDIProxy to construct an object from a received UDDI
     * message.
     *
     * @param base   Element with the name appropriate for this class.
     *
     * @exception UDDIException Thrown if DOM tree contains a SOAP fault
     *  or a disposition report indicating a UDDI error.
     */
    public KeyedReference(Element base) throws UDDIException {
        // Check if it is a fault. Throws an exception if it is.
        super(base);
        tModelKey = base.getAttribute("tModelKey");
      keyName = getAttr(base,"keyName");
      keyValue = getAttr(base,"keyValue");
    }

   private String getAttr(Element base, String attrname)
   {
     if(base.getAttributeNode(attrname)!=null && base.getAttributeNode(attrname).getSpecified() )  
     {
       return base.getAttribute(attrname);
     }
     return null;
   }

    public void setTModelKey(String s) {
        tModelKey = s;
    }

    public void setKeyName(String s) {
        keyName = s;
    }

    public void setKeyValue(String s) {
        keyValue = s;
    }

    public String getTModelKey() {
        return tModelKey;
    }


    public String getKeyName() {
        return keyName;
    }


    public String getKeyValue() {
        return keyValue;
    }


    /**
     * Save an object to the DOM tree. Used to serialize an object
     * to a DOM tree, usually to send a UDDI message.
     *
     * <BR>Used by UDDIProxy.
     *
     * @param parent Object will serialize as a child element under the
     *  passed in parent element.
     */
    public void saveToXML(Element parent) {
        base = parent.getOwnerDocument().createElementNS(UDDIElement.XMLNS, UDDIElement.XMLNS_PREFIX + UDDI_TAG);
        // Save attributes.
        if (tModelKey!=null)
        {
            base.setAttribute("tModelKey", tModelKey);
        }
        if (keyName!=null)
        {
            base.setAttribute("keyName", keyName);
        }
        if (keyValue!=null)
        {
            base.setAttribute("keyValue", keyValue);
        }
        parent.appendChild(base);
    }

    public boolean equals(Object obj)
    {
        boolean result = false;
        if (obj != null && obj instanceof KeyedReference)
        {
            KeyedReference otherKeyedReference = (KeyedReference)obj;
            if ((tModelKey == null && otherKeyedReference.tModelKey == null) ||
                (tModelKey != null && tModelKey.equalsIgnoreCase(otherKeyedReference.tModelKey)))
            {
                if ((keyName == null && otherKeyedReference.keyName == null) ||
                    (keyName != null && keyName.equals(otherKeyedReference.keyName)))
                {
                    if ((keyValue == null && otherKeyedReference.keyValue == null) ||
                        (keyValue != null && keyValue.equals(otherKeyedReference.keyValue)))
                    {
                        result = true;
                    }
                }
            }
        }
        return result;
    }

}