2005-12-08 07:13:07 +00:00

92 lines
2.9 KiB
Java

/*
* Copyright (C) 2005 Jesper Steen Møller
*
* Licensed under the Mozilla Public License version 1.1
* with a permitted attribution clause. You may obtain a
* copy of the License at
*
* http://www.alfresco.org/legal/license.txt
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific
* language governing permissions and limitations under the
* License.
*/
package org.alfresco.repo.content.metadata;
import java.io.IOException;
import java.io.Serializable;
import java.util.Calendar;
import java.util.Map;
import org.alfresco.model.ContentModel;
import org.alfresco.repo.content.MimetypeMap;
import org.alfresco.service.cmr.repository.ContentIOException;
import org.alfresco.service.cmr.repository.ContentReader;
import org.alfresco.service.namespace.QName;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdmodel.PDDocumentInformation;
/**
*
* @author Jesper Steen Møller
*/
public class PdfBoxMetadataExtracter extends AbstractMetadataExtracter
{
private static final Log logger = LogFactory.getLog(PdfBoxMetadataExtracter.class);
public PdfBoxMetadataExtracter()
{
super(MimetypeMap.MIMETYPE_PDF, 1.0, 1000);
}
public void extract(ContentReader reader, Map<QName, Serializable> destination) throws ContentIOException
{
if (!MimetypeMap.MIMETYPE_PDF.equals(reader.getMimetype()))
{
logger.debug("No metadata extracted for " + reader.getMimetype());
return;
}
PDDocument pdf = null;
try
{
// stream the document in
pdf = PDDocument.load(reader.getContentInputStream());
// Scoop out the metadata
PDDocumentInformation docInfo = pdf.getDocumentInformation();
trimPut(ContentModel.PROP_CREATOR, docInfo.getAuthor(), destination);
trimPut(ContentModel.PROP_TITLE, docInfo.getTitle(), destination);
trimPut(ContentModel.PROP_DESCRIPTION, docInfo.getSubject(), destination);
Calendar created = docInfo.getCreationDate();
if (created != null)
destination.put(ContentModel.PROP_CREATED, created.getTime());
}
catch (IOException e)
{
throw new ContentIOException("PDF metadata extraction failed: \n" +
" reader: " + reader);
}
finally
{
if (pdf != null)
{
try
{
pdf.close();
}
catch (Throwable e)
{
e.printStackTrace();
}
}
}
}
}