Alfresco Developer Guide, PdfBoxMetadataExtracter problem

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col_edinburgh

I am following the guide in the book Alfresco Developer Guide but have encountered a something I don't understand.

In chapter 4, Digging into the developer class the book refers to

org.alfresco.repo.content.metadata.PdfBoxMetadataExtracter class‍

and describe the code below:

PDDocumentInformation docInfo = pdf.getDocumentInformation(); putRawValue(KEY_AUTHOR, docInfo.getAuthor(), rawProperties); putRawValue(KEY_TITLE, docInfo.getTitle(), rawProperties); putRawValue(KEY_SUBJECT, docInfo.getSubject(), rawProperties); Calendar created = docInfo.getCreationDate(); if (created != null) { putRawValue(KEY_CREATED, created.getTime(), rawProperties); }‍

The problem is i looked in the code in:

SDK AlfrescoEmbedded/source/alfresco-repository-3.4.d.jar/org.alfresco.repo.content.metadata.PdfBoxMetadataExtracter class‍

which contains the following code:

* Copyright (C) 2005 Jesper Steen M√∏ller
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.repo.content.metadata;

import java.util.ArrayList;

import org.alfresco.repo.content.MimetypeMap;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tika.parser.Parser;
import org.apache.tika.parser.pdf.PDFParser;

/**
 * Metadata extractor for the PDF documents.
 * <pre>
 *   <b>author:</b>                 –      cm:author
 *   <b>title:</b>                  –      cm:title
 *   <b>subject:</b>                –      cm:description
 *   <b>created:</b>                –      cm:created
 *   <b>(custom metadata):</b>      –
 * </pre>
 * 
 * Uses Apache Tika
 * 
 * @author Jesper Steen M√∏ller
 * @author Derek Hulley
 */
public class PdfBoxMetadataExtracter extends TikaPoweredMetadataExtracter
{
    protected static Log pdfLogger = LogFactory.getLog(PdfBoxMetadataExtracter.class);

    public static ArrayList<String> SUPPORTED_MIMETYPES = buildSupportedMimetypes(
             new String[] { MimetypeMap.MIMETYPE_PDF },
             new PDFParser()
    );

    public PdfBoxMetadataExtracter()
    {
        super(SUPPORTED_MIMETYPES);
    }
    
    @Override
    protected Parser getParser() {
       return new PDFParser();
    }
}
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I'm puzzled as I was expeting to see the code: DDocumentInformation docInfo = pdf.g …

mrogers

Since that example was written, it looks like the "old" PDFBox metadata extractor has been replaced with a Apache Tika based extractor.
However, from the few lines you have given, it still looks like a good example, even though it does not match the current code.