samldonotcachecondition.java

开放源代码的基于SAML的单点登录系统

/* 
 * The OpenSAML License, Version 1. 
 * Copyright (c) 2002 
 * University Corporation for Advanced Internet Development, Inc. 
 * 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, if any, must include 
 * the following acknowledgment: "This product includes software developed by 
 * the University Corporation for Advanced Internet Development 
 * <http://www.ucaid.edu>Internet2 Project. Alternately, this acknowledegement 
 * may appear in the software itself, if and wherever such third-party 
 * acknowledgments normally appear.
 * 
 * Neither the name of OpenSAML nor the names of its contributors, nor 
 * Internet2, nor the University Corporation for Advanced Internet Development, 
 * Inc., nor UCAID may be used to endorse or promote products derived from this 
 * software without specific prior written permission. For written permission, 
 * please contact [e-mail]
 * 
 * Products derived from this software may not be called OpenSAML, Internet2, 
 * UCAID, or the University Corporation for Advanced Internet Development, nor 
 * may OpenSAML appear in their name, without prior written permission of the 
 * University Corporation for Advanced Internet Development.
 * 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND WITH ALL FAULTS. ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
 * PARTICULAR PURPOSE, AND NON-INFRINGEMENT ARE DISCLAIMED AND THE ENTIRE RISK 
 * OF SATISFACTORY QUALITY, PERFORMANCE, ACCURACY, AND EFFORT IS WITH LICENSEE. 
 * IN NO EVENT SHALL THE COPYRIGHT OWNER, CONTRIBUTORS OR THE UNIVERSITY 
 * CORPORATION FOR ADVANCED INTERNET DEVELOPMENT, INC. 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 
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
package org.opensaml;

import java.io.InputStream;

import org.w3c.dom.*;

/**
 *  Represents a SAML DoNotCacheCondition
 *
 * @author     Scott Cantor
 * @created    March 30, 2002
 */
public class SAMLDoNotCacheCondition extends SAMLCondition implements Cloneable
{
    /**
     *  Default constructor
     */
    public SAMLDoNotCacheCondition() {
    }

    /**
     *  Reconstructs a condition from a DOM tree
     *
     * @param  e                  The root of a DOM tree
     * @exception  SAMLException  Thrown if the object cannot be constructed
     */
    public SAMLDoNotCacheCondition(Element e) throws SAMLException {
        fromDOM(e);
    }

    /**
     *  Reconstructs a condition from a stream
     *
     * @param  in                   A stream containing XML
     * @exception  SAMLException  Raised if an exception occurs while constructing
     *                              the object.
     */
    public SAMLDoNotCacheCondition(InputStream in) throws SAMLException {
        fromDOM(fromStream(in));
    }
    
    /**
     * @see org.opensaml.SAMLObject#fromDOM(org.w3c.dom.Element)
     */
    public void fromDOM(Element e) throws SAMLException {
        super.fromDOM(e);
        
        if (config.getBooleanProperty("org.opensaml.strict-dom-checking")) {
            if (!XML.isElementNamed(e,XML.SAML_NS,"DoNotCacheCondition")) {
                QName q = QName.getQNameAttribute(e, XML.XSI_NS, "type");
                if (!XML.isElementNamed(e,XML.SAML_NS,"Condition") || q == null ||
                    !XML.SAML_NS.equals(q.getNamespaceURI()) || !"DoNotCacheConditionType".equals(q.getLocalName()))
                    throw new MalformedException(SAMLException.RESPONDER, "SAMLDoNotCacheCondition() requires saml:DoNotCacheCondition at root");
            }
        }
    }

    /**
     *  @see org.opensaml.SAMLObject#toDOM(org.w3c.dom.Document,boolean)
     */
    public Node toDOM(Document doc, boolean xmlns) throws SAMLException {
        if ((root = super.toDOM(doc, xmlns)) != null) {
			if (xmlns)
				((Element)root).setAttributeNS(XML.XMLNS_NS, "xmlns", XML.SAML_NS);
			return root;
        }

        root = doc.createElementNS(XML.SAML_NS, "DoNotCacheCondition");
        if (xmlns)
        	((Element)root).setAttributeNS(XML.XMLNS_NS, "xmlns", XML.SAML_NS);
        return root;
    }

    /**
     *  Copies a SAML object such that no dependencies exist between the original
     *  and the copy
     * 
     * @return      The new object
     * @see java.lang.Object#clone()
     */
    public Object clone() throws CloneNotSupportedException {
        return super.clone();
    }
}