/*
 * $Id: SAAJResult.java,v 1.3 2006/03/09 16:09:42 vj135062 Exp $
 */

/*
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.xml.soap;

import javax.xml.transform.dom.DOMResult;

/**
 * Acts as a holder for the results of a JAXP transformation or a JAXB 
 * marshalling, in the form of a SAAJ tree. These results should be accessed
 * by using the {@link #getResult()} method. The {@link DOMResult#getNode()}
 * method should be avoided in almost all cases. 
 *
 * @author XWS-Security Development Team
 * 
 * @since SAAJ 1.3
 */
public class SAAJResult extends DOMResult {
    
    /**
     * Creates a <code>SAAJResult</code> that will present results in the form
     * of a SAAJ tree that supports the default (SOAP 1.1) protocol. 
     * <p>
     * This kind of <code>SAAJResult</code> is meant for use in situations where the 
     * results will be used as a parameter to a method that takes a parameter 
     * whose type, such as <code>SOAPElement</code>, is drawn from the SAAJ 
     * API. When used in a transformation, the results are populated into the 
     * <code>SOAPPart</code> of a <code>SOAPMessage</code> that is created internally.
     * The <code>SOAPPart</code> returned by {@link DOMResult#getNode()} 
     * is not guaranteed to be well-formed.
     * 
     * @throws SOAPException if there is a problem creating a <code>SOAPMessage</code>
     * 
     * @since SAAJ 1.3
     */
    public SAAJResult() throws SOAPException {
        this(MessageFactory.newInstance().createMessage());
    }
    
    /**
     * Creates a <code>SAAJResult</code> that will present results in the form
     * of a SAAJ tree that supports the specified protocol. The 
     * <code>DYNAMIC_SOAP_PROTOCOL</code> is ambiguous in this context and will
     * cause this constructor to throw an <code>UnsupportedOperationException</code>. 
     * <p>
     * This kind of <code>SAAJResult</code> is meant for use in situations where the 
     * results will be used as a parameter to a method that takes a parameter 
     * whose type, such as <code>SOAPElement</code>, is drawn from the SAAJ 
     * API. When used in a transformation the results are populated into the 
     * <code>SOAPPart</code> of a <code>SOAPMessage</code> that is created 
     * internally. The <code>SOAPPart</code> returned by {@link DOMResult#getNode()} 
     * is not guaranteed to be well-formed.
     * 
     * @param protocol - the name of the SOAP protocol that the resulting SAAJ 
     *                      tree should support
     *  
     * @throws SOAPException if a <code>SOAPMessage</code> supporting the 
     *             specified protocol cannot be created
     * 
     * @since SAAJ 1.3
     */
    public SAAJResult(String protocol) throws SOAPException {
        this(MessageFactory.newInstance(protocol).createMessage());
    }
    
    /**
     * Creates a <code>SAAJResult</code> that will write the results into the
     * <code>SOAPPart</code> of the supplied <code>SOAPMessage</code>. 
     * In the normal case these results will be written using DOM APIs and, 
     * as a result, the finished <code>SOAPPart</code> will not be guaranteed 
     * to be well-formed unless the data used to create it is also well formed. 
     * When used in a transformation the validity of the <code>SOAPMessage</code> 
     * after the transformation can be guaranteed only by means outside SAAJ 
     * specification.
     *
     * @param message - the message whose <code>SOAPPart</code> will be 
     *                  populated as a result of some transformation or 
     *                  marshalling operation
     * 
     * @since SAAJ 1.3
     */
    public SAAJResult(SOAPMessage message) {
        super(message.getSOAPPart());
    }
    
    /**
     * Creates a <code>SAAJResult</code> that will write the results as a 
     * child node of the <code>SOAPElement</code> specified. In the normal
     * case these results will be written using DOM APIs and as a result may
     * invalidate the structure of the SAAJ tree. This kind of 
     * <code>SAAJResult</code> should only be used when the validity of the
     * incoming data can be guaranteed by means outside of the SAAJ 
     * specification.
     * 
     * @param rootNode - the root to which the results will be appended
     * 
     * @since SAAJ 1.3
     */
    public SAAJResult(SOAPElement rootNode) {
        super(rootNode);
    }
    
  
    /**
     * @return the resulting Tree that was created under the specified root Node.
     * @since SAAJ 1.3
     */
    public javax.xml.soap.Node getResult() {
        return (javax.xml.soap.Node)super.getNode().getFirstChild();
     } 
}