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/* * reserved comment block * DO NOT REMOVE OR ALTER! *//* * Copyright 2005 The Apache Software Foundation. * *  Licensed under the Apache License, Version 2.0 (the "License"); *  you may not use this file except in compliance with the License. *  You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * *  Unless required by applicable law or agreed to in writing, software *  distributed under the License is distributed on an "AS IS" BASIS, *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *  See the License for the specific language governing permissions and *  limitations under the License. * *//* * Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. *//* * $Id: DOMManifest.java,v 1.2 2008/07/24 15:20:32 mullan Exp $ */package org.jcp.xml.dsig.internal.dom; import javax.xml.crypto.*;import javax.xml.crypto.dom.DOMCryptoContext;import javax.xml.crypto.dsig.*; import java.security.Provider;import java.util.*;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.Node; /** * DOM-based implementation of Manifest. * * @author Sean Mullan */public final class DOMManifest extends DOMStructure implements Manifest {     private final List references;    private final String id;     /**     * Creates a <code>DOMManifest</code> containing the specified     * list of {@link Reference}s and optional id.     *     * @param references a list of one or more <code>Reference</code>s. The list     *    is defensively copied to protect against subsequent modification.     * @param id the id (may be <code>null</code>     * @throws NullPointerException if <code>references</code> is     *    <code>null</code>     * @throws IllegalArgumentException if <code>references</code> is empty     * @throws ClassCastException if <code>references</code> contains any     *    entries that are not of type {@link Reference}     */    public DOMManifest(List references, String id) {        if (references == null) {            throw new NullPointerException("references cannot be null");        }        List refCopy = new ArrayList(references);        if (refCopy.isEmpty()) {            throw new IllegalArgumentException("list of references must " +                "contain at least one entry");        }        for (int i = 0, size = refCopy.size(); i < size; i++) {            if (!(refCopy.get(i) instanceof Reference)) {                throw new ClassCastException                    ("references["+i+"] is not a valid type");            }        }        this.references = Collections.unmodifiableList(refCopy);        this.id = id;    }     /**     * Creates a <code>DOMManifest</code> from an element.     *     * @param manElem a Manifest element     */    public DOMManifest(Element manElem, XMLCryptoContext context,        Provider provider) throws MarshalException {        this.id = DOMUtils.getAttributeValue(manElem, "Id");        Element refElem = DOMUtils.getFirstChildElement(manElem);        List refs = new ArrayList();        while (refElem != null) {            refs.add(new DOMReference(refElem, context, provider));            refElem = DOMUtils.getNextSiblingElement(refElem);        }        this.references = Collections.unmodifiableList(refs);    }     public String getId() {        return id;    }     public List getReferences() {        return references;    }     public void marshal(Node parent, String dsPrefix, DOMCryptoContext context)        throws MarshalException {        Document ownerDoc = DOMUtils.getOwnerDocument(parent);         Element manElem = DOMUtils.createElement            (ownerDoc, "Manifest", XMLSignature.XMLNS, dsPrefix);         DOMUtils.setAttributeID(manElem, "Id", id);         // add references        for (int i = 0, size = references.size(); i < size; i++) {            DOMReference ref = (DOMReference) references.get(i);            ref.marshal(manElem, dsPrefix, context);        }        parent.appendChild(manElem);    }     public boolean equals(Object o) {        if (this == o) {            return true;        }         if (!(o instanceof Manifest)) {            return false;        }        Manifest oman = (Manifest) o;         boolean idsEqual = (id == null ? oman.getId() == null :            id.equals(oman.getId()));         return (idsEqual && references.equals(oman.getReferences()));    }}