org.xstudiosys.pdfxmp.MarkBuilder.java Source code

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Here is the source code for org.xstudiosys.pdfxmp.MarkBuilder.java

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/*
 * Copyright 2009 xstudiosys.org (email: support@xstudiosys.org)
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
package org.xstudiosys.pdfxmp;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

import javax.xml.xpath.XPathExpressionException;

import org.apache.jempbox.xmp.XMPMetadata;
import org.apache.jempbox.xmp.XMPSchemaBasic;
import org.apache.jempbox.xmp.XMPSchemaDublinCore;
import org.apache.jempbox.xmp.XMPSchemaPDF;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.PDDocumentInformation;
import org.apache.pdfbox.pdmodel.common.PDMetadata;

import java.util.GregorianCalendar;

public class MarkBuilder {

    private static URI DOI_RESOLVER;
    static {
        try {
            DOI_RESOLVER = new URI("http://dx.doi.org/");
        } catch (URISyntaxException e) {
            /* Not possible. */
        }
    }

    public void onComplete(PDDocument document) {
        try {

            PDDocumentCatalog catalog = document.getDocumentCatalog();
            PDDocumentInformation info = document.getDocumentInformation();

            XMPMetadata metadata = new XMPMetadata();

            XMPSchemaPDF pdfSchema = metadata.addPDFSchema();
            pdfSchema.setKeywords(info.getKeywords());
            pdfSchema.setProducer(info.getProducer());

            XMPSchemaBasic basicSchema = metadata.addBasicSchema();
            basicSchema.setModifyDate(info.getModificationDate());
            basicSchema.setCreateDate(info.getCreationDate());
            basicSchema.setCreatorTool(info.getCreator());
            basicSchema.setMetadataDate(new GregorianCalendar());

            XMPSchemaDublinCore dcSchema = metadata.addDublinCoreSchema();
            dcSchema.setTitle(info.getTitle());
            dcSchema.addCreator("PDFBox");
            dcSchema.setDescription(info.getSubject());

            PDMetadata metadataStream = new PDMetadata(document);
            metadataStream.importXMPMetadata(metadata);
            catalog.setMetadata(metadataStream);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static String getUrlForDoi(String doi) {
        return DOI_RESOLVER.resolve(doi).toString();
    }

}