aoqi@0: /*
aoqi@0:  * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package javax.xml.bind.attachment;
aoqi@0: 
aoqi@0: import javax.activation.DataHandler;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * <p>Enables JAXB unmarshalling of a root document containing optimized binary data formats.</p>
aoqi@0:  *
aoqi@0:  * <p>This API enables an efficient cooperative processing of optimized
aoqi@0:  * binary data formats between a JAXB 2.0 implementation and MIME-based package
aoqi@0:  * processor (MTOM/XOP and WS-I AP 1.0). JAXB unmarshals the body of a package, delegating the
aoqi@0:  * understanding of the packaging format being used to a MIME-based
aoqi@0:  * package processor that implements this abstract class.</p>
aoqi@0:  *
aoqi@0:  * <p>This abstract class identifies if a package requires XOP processing, {@link #isXOPPackage()} and provides retrieval of binary content stored as attachments by content-id.</p>
aoqi@0:  *
aoqi@0:  * <h2>Identifying the content-id, cid, to pass to <code>getAttachment*(String cid)</code></h2>
aoqi@0:  * <ul>
aoqi@0:  * <li>
aoqi@0:  * For XOP processing, the infoset representation of the cid is described
aoqi@0:  * in step 2a in
aoqi@0:  * <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/#interpreting_xop_packages">Section 3.2 Interpreting XOP Packages</a>
aoqi@0:  * </li>
aoqi@0:  * <li>
aoqi@0:  * For WS-I AP 1.0, the cid is identified as an element or attribute of
aoqi@0:  * type <code>ref:swaRef </code> specified in
aoqi@0:  * <a href="http://www.ws-i.org/Profiles/AttachmentsProfile-1.0-2004-08-24.html#Referencing_Attachments_from_the_SOAP_Envelope">Section 4.4 Referencing Attachments from the SOAP Envelope</a>
aoqi@0:  * </li>
aoqi@0:  * </ul>
aoqi@0:  *
aoqi@0:  * @author Marc Hadley
aoqi@0:  * @author Kohsuke Kawaguchi
aoqi@0:  * @author Joseph Fialli
aoqi@0:  *
aoqi@0:  * @since JAXB 2.0
aoqi@0:  *
aoqi@0:  * @see javax.xml.bind.Unmarshaller#setAttachmentUnmarshaller(AttachmentUnmarshaller)
aoqi@0:  *
aoqi@0:  * @see <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/">XML-binary Optimized Packaging</a>
aoqi@0:  * @see <a href="http://www.ws-i.org/Profiles/AttachmentsProfile-1.0-2004-08-24.html">WS-I Attachments Profile Version 1.0.</a>
aoqi@0:  * @see <a href="http://www.w3.org/TR/xml-media-types/">Describing Media Content of Binary Data in XML</a>
aoqi@0:  */
aoqi@0: public abstract class AttachmentUnmarshaller {
aoqi@0:    /**
aoqi@0:     * <p>Lookup MIME content by content-id, <code>cid</code>, and return as a {@link DataHandler}.</p>
aoqi@0:     *
aoqi@0:     * <p>The returned <code>DataHandler</code> instance must be configured
aoqi@0:     * to meet the following required mapping constaint.
aoqi@0:     * <table border="2" rules="all" cellpadding="4">
aoqi@0:     *   <thead>
aoqi@0:     *     <tr>
aoqi@0:     *       <th align="center" colspan="2">
aoqi@0:     *       Required Mappings between MIME and Java Types
aoqi@0:     *       </tr>
aoqi@0:     *     <tr>
aoqi@0:     *       <th>MIME Type</th>
aoqi@0:     *       <th>Java Type</th>
aoqi@0:     *     </tr>
aoqi@0:     *     <tr>
aoqi@0:     *       <th><code>DataHandler.getContentType()</code></th>
aoqi@0:     *       <th><code>instanceof DataHandler.getContent()</code></th>
aoqi@0:     *     </tr>
aoqi@0:     *   </thead>
aoqi@0:     *   <tbody>
aoqi@0:     *     <tr>
aoqi@0:     *       <td>image/gif</td>
aoqi@0:     *       <td>java.awt.Image</td>
aoqi@0:     *     </tr>
aoqi@0:     *     <tr>
aoqi@0:     *       <td>image/jpeg</td>
aoqi@0:     *       <td>java.awt.Image</td>
aoqi@0:     *     </tr>
aoqi@0:     *     <tr>
aoqi@0:     *       <td>text/xml  or application/xml</td>
aoqi@0:     *       <td>javax.xml.transform.Source</td>
aoqi@0:     *     </tr>
aoqi@0:     *   </tbody>
aoqi@0:     *  </table>
aoqi@0:     * Note that it is allowable to support additional mappings.</p>
aoqi@0:     *
aoqi@0:     * @param cid It is expected to be a valid lexical form of the XML Schema
aoqi@0:     * <code>xs:anyURI</code> datatype. If <code>{@link #isXOPPackage()}
aoqi@0:     * ==true</code>, it must be a valid URI per the <code>cid:</code> URI scheme (see <a href="http://www.ietf.org/rfc/rfc2387.txt">RFC 2387</a>)
aoqi@0:     *
aoqi@0:     * @return
aoqi@0:     *       a {@link DataHandler} that represents the MIME attachment.
aoqi@0:     *
aoqi@0:     * @throws IllegalArgumentException if the attachment for the given cid is not found.
aoqi@0:     */
aoqi@0:    public abstract DataHandler getAttachmentAsDataHandler(String cid);
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * <p>Retrieve the attachment identified by content-id, <code>cid</code>,  as a <tt>byte[]</tt></p>.
aoqi@0:      *
aoqi@0:      * @param cid It is expected to be a valid lexical form of the XML Schema
aoqi@0:      * <code>xs:anyURI</code> datatype. If <code>{@link #isXOPPackage()}
aoqi@0:      * ==true</code>, it must be a valid URI per the <code>cid:</code> URI scheme (see <a href="http://www.ietf.org/rfc/rfc2387.txt">RFC 2387</a>)
aoqi@0:      *
aoqi@0:      * @return byte[] representation of attachment identified by cid.
aoqi@0:      *
aoqi@0:     * @throws IllegalArgumentException if the attachment for the given cid is not found.
aoqi@0:      */
aoqi@0:     public abstract byte[] getAttachmentAsByteArray(String cid);
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * <p>Read-only property that returns true if JAXB unmarshaller needs to perform XOP processing.</p>
aoqi@0:      *
aoqi@0:      * <p>This method returns <code>true</code> when the constraints specified
aoqi@0:      * in  <a href="http://www.w3.org/TR/2005/REC-xop10-20050125/#identifying_xop_documents">Identifying XOP Documents</a> are met.
aoqi@0:      * This value must not change during the unmarshalling process.</p>
aoqi@0:      *
aoqi@0:      * @return true when MIME context is a XOP Document.
aoqi@0:      */
aoqi@0:     public boolean isXOPPackage() { return false; }
aoqi@0: }