/*
* Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
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/*
* ===========================================================================
*
* (C) Copyright IBM Corp. 2003 All Rights Reserved.
*
* ===========================================================================
*/
/*
* $Id: URIDereferencer.java,v 1.5 2005/05/10 15:47:42 mullan Exp $
*/
package javax.xml.crypto;
/**
* A dereferencer of {@link URIReference}s.
* <p>
* The result of dereferencing a <code>URIReference</code> is either an
* instance of {@link OctetStreamData} or {@link NodeSetData}. Unless the
* <code>URIReference</code> is a <i>same-document reference</i> as defined
* in section 4.2 of the W3C Recommendation for XML-Signature Syntax and
* Processing, the result of dereferencing the <code>URIReference</code>
* MUST be an <code>OctetStreamData</code>.
*
* @author Sean Mullan
* @author Joyce Leung
* @author JSR 105 Expert Group
* @since 1.6
* @see XMLCryptoContext#setURIDereferencer(URIDereferencer)
* @see XMLCryptoContext#getURIDereferencer
*/
public interface URIDereferencer {
/**
* Dereferences the specified <code>URIReference</code> and returns the
* dereferenced data.
*
* @param uriReference the <code>URIReference</code>
* @param context an <code>XMLCryptoContext</code> that may
* contain additional useful information for dereferencing the URI. This
* implementation should dereference the specified
* <code>URIReference</code> against the context's <code>baseURI</code>
* parameter, if specified.
* @return the dereferenced data
* @throws NullPointerException if <code>uriReference</code> or
* <code>context</code> are <code>null</code>
* @throws URIReferenceException if an exception occurs while
* dereferencing the specified <code>uriReference</code>
*/
Data dereference(URIReference uriReference, XMLCryptoContext context)
throws URIReferenceException;
}