/*
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 */
/*
 * $Id: Manifest.java,v 1.7 2005/05/10 16:03:46 mullan Exp $
 */
package javax.xml.crypto.dsig;

import javax.xml.crypto.XMLStructure;
import java.util.List;

/**
 * A representation of the XML <code>Manifest</code> element as defined in 
 * the <a href="http://www.w3.org/TR/xmldsig-core/">
 * W3C Recommendation for XML-Signature Syntax and Processing</a>.
 * The XML Schema Definition is defined as:
 * <pre><code>
 * &lt;element name="Manifest" type="ds:ManifestType"/&gt; 
 *   &lt;complexType name="ManifestType"&gt;
 *     &lt;sequence>
 *       &lt;element ref="ds:Reference" maxOccurs="unbounded"/&gt; 
 *     &lt;/sequence&gt;  
 *     &lt;attribute name="Id" type="ID" use="optional"/&gt; 
 *   &lt;/complexType&gt;
 * </code></pre>
 *
 * A <code>Manifest</code> instance may be created by invoking
 * one of the {@link XMLSignatureFactory#newManifest newManifest} 
 * methods of the {@link XMLSignatureFactory} class; for example: 
 *
 * <pre>
 *   XMLSignatureFactory factory = XMLSignatureFactory.getInstance("DOM");
 *   List references = Collections.singletonList(factory.newReference
 *       ("#reference-1", DigestMethod.SHA1));
 *   Manifest manifest = factory.newManifest(references, "manifest-1");
 * </pre>
 *
 * @author Sean Mullan
 * @author JSR 105 Expert Group
 * @since 1.6
 * @see XMLSignatureFactory#newManifest(List)
 * @see XMLSignatureFactory#newManifest(List, String)
 */
public interface Manifest extends XMLStructure {

    /**
     * URI that identifies the <code>Manifest</code> element (this can be 
     * specified as the value of the <code>type</code> parameter of the 
     * {@link Reference} class to identify the referent's type).
     */
    final static String TYPE = "http://www.w3.org/2000/09/xmldsig#Manifest";

    /**
     * Returns the Id of this <code>Manifest</code>.
     *
     * @return the Id  of this <code>Manifest</code> (or <code>null</code> 
     *    if not specified)
     */
    String getId();
    
    /**
     * Returns an {@link java.util.Collections#unmodifiableList unmodifiable 
     * list} of one or more {@link Reference}s that are contained in this
     * <code>Manifest</code>. 
     *
     * @return an unmodifiable list of one or more <code>Reference</code>s 
     */
    List getReferences();
}