//$Header: /home/deegree/jail/deegreerepository/deegree/src/org/deegree/portal/standard/csw/MetadataTransformer.java,v 1.3 2006/06/23 13:39:01 mays Exp $
/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstraße 19
53177 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.portal.standard.csw;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringWriter;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
/**
* A <code>${type_name}</code> class.<br/>
* TODO class description
*
* @author <a href="mailto:mays@lat-lon.de">Judit Mays</a>
* @author last edited by: $Author: mays $
*
* @version 2.0, $Revision: 1.3 $, $Date: 2006/06/23 13:39:01 $
*
* @since 2.0
*/
public class MetadataTransformer {
/**
* The <code>Transformer</code> object used in the transformation of a map context xml to html.
*/
private Transformer transformer = null;
/**
* Creates a new MetadataTransformer and initializes it with the given <code>file</code>
* (path and name).
*
* @param filePathName
* @throws FileNotFoundException, if filePathName does not point to an existing file.
*/
public MetadataTransformer( String filePathName ) throws FileNotFoundException {
initTransformer( filePathName );
}
/**
* @param filePathName
* @throws FileNotFoundException
*/
private void initTransformer( String filePathName ) throws FileNotFoundException{
InputStream xslInputStream = new FileInputStream( filePathName );
try {
TransformerFactory tFactory = TransformerFactory.newInstance();
transformer = tFactory.newTransformer( new StreamSource( xslInputStream ) );
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
e.printStackTrace();
}
}
/**
* Transforms the context pointed to by <code>context</code> into html
* using <code>xsltURL</code>
*
* @param metadataXml The <code>Reader</code> containing the xml document to be transformed.
* @param catalog The name of the catalog.
* @param serviceCatalogs
* @param hits The number of records matched for this catalog.
* @param startPosition The position to start displaying the matched records from.
* @param metaVersion The version of metadata to transform ( list, overview, detailed ).
* @return Returns result of transformation.
* @throws TransformerException
* @throws IOException
*/
public String transformMetadata( Reader metadataXml, String catalog, String[] serviceCatalogs,
int hits, int startPosition, String metaVersion )
throws TransformerException, IOException {
if( transformer == null ){
throw new IOException( "Transformer is null!" );
}
StringWriter sw = new StringWriter();
StreamResult strmResult = new StreamResult(sw);
StreamSource xmlSrc = new StreamSource( metadataXml );
// turn array of Strings into one comma-separated String
StringBuffer sb = new StringBuffer();
if ( serviceCatalogs != null ) {
for (int i = 0; i < serviceCatalogs.length; i++) {
sb.append( serviceCatalogs[i] );
if ( i < serviceCatalogs.length-1 ) {
sb.append( "," );
}
}
}
// setting global variables for xslt-scripts
transformer.setParameter( "CATALOG", catalog );
transformer.setParameter( "SERVICECATALOGS", sb.toString() );
transformer.setParameter( "HITS", new Integer(hits) );
transformer.setParameter( "STARTPOS", new Integer(startPosition) );
transformer.setParameter( "METAVERSION", metaVersion );
transformer.transform( xmlSrc , strmResult );
try {
sw.close();
} catch (IOException e) {
System.out.println("Unable to close string writer.\n");
e.printStackTrace();
}
return sw.toString();
}
public String toString(){
return transformer.toString();
}
}
/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: MetadataTransformer.java,v $
Revision 1.3 2006/06/23 13:39:01 mays
add/update csw files
********************************************************************** */