dspacemetsingester.java

dspace 用j2ee架构的一个数字图书馆.开源程序

/*
 * DSpaceMETSIngester
 *
 * Version: $Revision: 1.1 $
 *
 * Date: $Date: 2006/03/17 00:04:38 $
 *
 * Copyright (c) 2002-2005, Hewlett-Packard Company and Massachusetts
 * Institute of Technology.  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.
 *
 * - Neither the name of the Hewlett-Packard Company nor the name of the
 * Massachusetts Institute of Technology nor the names of their
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS 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
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package org.dspace.content.packager;

import java.io.IOException;
import java.sql.SQLException;
import java.util.Set;

import org.apache.log4j.Logger;
import org.dspace.authorize.AuthorizeException;
import org.dspace.content.Bitstream;
import org.dspace.content.Bundle;
import org.dspace.content.Collection;
import org.dspace.content.Item;
import org.dspace.content.crosswalk.CrosswalkException;
import org.dspace.content.crosswalk.MetadataValidationException;
import org.dspace.core.Context;
import org.dspace.license.CreativeCommons;
import org.jdom.Element;

/**
 * Packager plugin to ingest a
 * METS (Metadata Encoding & Transmission Standard) package
 * that conforms to the DSpace METS SIP (Submission Information Package) Profile.
 * See <a href="http://www.loc.gov/standards/mets/">http://www.loc.gov/standards/mets/</a>
 * for more information on METS, and
 * <a href="http://www.dspace.org/standards/METS/SIP/profilev0p9p1/metssipv0p9p1.pdf">
 * http://www.dspace.org/standards/METS/SIP/profilev0p9p1/metssipv0p9p1.pdf</a>
 * (or a similar file in the /standards/METS/SIP resource hierarchy)
 * for more information about the DSpace METS SIP profile.
 *
 * @author Larry Stone
 * @version $Revision: 1.1 $
 * @see org.dspace.content.packager.METSManifest
 */
public class DSpaceMETSIngester
       extends AbstractMETSIngester
{
    /** log4j category */
    private static Logger log = Logger.getLogger(DSpaceMETSIngester.class);

    // first part of required mets@PROFILE value
    private final static String PROFILE_START = "DSpace METS SIP Profile";

    // just check the profile name.
    void checkManifest(METSManifest manifest)
        throws MetadataValidationException
    {
        String profile = manifest.getProfile();
        if (profile == null)
            throw new MetadataValidationException("Cannot accept METS with no PROFILE attribute!");
        else if (!profile.startsWith(PROFILE_START))
            throw new MetadataValidationException("METS has unacceptable PROFILE value, profile="+profile);
    }

    // nothing needed.
    public void checkPackageFiles(Set packageFiles, Set missingFiles,
                                  METSManifest manifest)
        throws PackageValidationException, CrosswalkException
    {
        // This is where a subclass would arrange to use or ignore
        // any "extra" files added to its type of package.
    }


    /**
     * Choose DMD section(s) to crosswalk.
     * <p>
     * The algorithm is:<br>
     * 1. Find MODS (preferably) or DC as primary DMD.<br>
     * 2. If (1) succeeds, crosswalk it and ignore all other DMDs with
     *    same GROUPID<br>
     * 3. Crosswalk remaining DMDs not eliminated already.
     */
    public void chooseItemDmd(Context context, Item item,
                              METSManifest manifest,
                              AbstractMETSIngester.MdrefManager callback,
                              Element dmds[])
        throws CrosswalkException,
               AuthorizeException, SQLException, IOException
    {
        int found = -1;

        // MODS is preferred
        for (int i = 0; i < dmds.length; ++i)
            if ("MODS".equals(manifest.getMdType(dmds[i])))
                found = i;

        // DC acceptable if no MODS
        if (found == -1)
        {
            for (int i = 0; i < dmds.length; ++i)
                if ("DC".equals(manifest.getMdType(dmds[i])))
                    found = i;
        }

        String groupID = null;
        if (found >= 0)
        {
            manifest.crosswalkItem(context, item, dmds[found], callback);
            groupID = dmds[found].getAttributeValue("GROUPID");

            if (groupID != null)
            {
                for (int i = 0; i < dmds.length; ++i)
                {
                    String g = dmds[i].getAttributeValue("GROUPID");
                    if (g != null && !g.equals(groupID))
                        manifest.crosswalkItem(context, item, dmds[i], callback);
                }
            }
        }

        // otherwise take the first.  Don't xwalk more than one because
        // each xwalk _adds_ metadata, and could add duplicate fields.
        else
        {
            if (dmds.length > 0)
                manifest.crosswalkItem(context, item, dmds[0], callback);
        }
    }


    /**
     * Policy:  For DSpace deposit license, take deposit license
     * supplied by explicit argument first, else use collection's
     * default deposit license.
     * For Creative Commons, look for a rightsMd containing a CC license.
     */
    public void addLicense(Context context, Collection collection,
                           Item item, METSManifest manifest,
                           AbstractMETSIngester.MdrefManager callback,
                           String license)
        throws PackageValidationException, CrosswalkException,
               AuthorizeException, SQLException, IOException
    {
        PackageUtils.addDepositLicense(context, license, item, collection);

        // If package includes a Creative Commons license, add that:
        Element rmds[] = manifest.getItemRightsMD();
        for (int i = 0; i < rmds.length; ++i)
        {
            String type = manifest.getMdType(rmds[i]);
            if (type != null && type.equals("Creative Commons"))
            {
                log.debug("Got Creative Commons license in rightsMD");
                CreativeCommons.setLicense(context, item,
                            manifest.getMdContentAsStream(rmds[i], callback),
                            manifest.getMdContentMimeType(rmds[i]));

                // if there was a bitstream, get rid of it, since
                // it's just an artifact now that the CC license is installed.
                Element mdRef = rmds[i].getChild("mdRef", METSManifest.metsNS);
                if (mdRef != null)
                {
                    Bitstream bs = callback.getBitstreamForMdRef(mdRef);
                    if (bs != null)
                    {
                        Bundle parent[] = bs.getBundles();
                        if (parent.length > 0)
                        {
                            parent[0].removeBitstream(bs);
                            parent[0].update();
                        }
                    }
                }
            }
        }
    }

    // last change to fix up Item.
    public void finishItem(Context context, Item item)
        throws PackageValidationException, CrosswalkException,
         AuthorizeException, SQLException, IOException
    {
        // nothing to do.
    }
}