/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. 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.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Intalio, Inc. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Intalio, Inc. Exolab is a registered
* trademark of Intalio, Inc.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED 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
* INTALIO, INC. OR ITS 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.
*
* Copyright 1999 (C) Intalio, Inc. All Rights Reserved.
*
* $Id: Importer.java,v 1.2 2004/10/01 13:24:50 snyder Exp $
*/
package org.exolab.castor.dsml;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.util.Enumeration;
import java.util.TooManyListenersException;
import org.xml.sax.DocumentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.Parser;
import org.xml.sax.InputSource;
import org.exolab.castor.util.Configuration;
import org.exolab.castor.util.LocalConfiguration;
import org.exolab.castor.util.Messages;
/**
*
*
* @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
* @version $Revision: 1.2 $ $Date: 2004/10/01 13:24:50 $
*/
public abstract class Importer
{
private Configuration _config = LocalConfiguration.getInstance();
private ImportDescriptor _importDesc;
private ImportEventListener _listener;
public void setImportDescriptor( ImportDescriptor importDesc )
{
_importDesc = importDesc;
}
public ImportDescriptor getImportDescriptor()
{
if ( _importDesc == null )
_importDesc = new ImportDescriptor();
return _importDesc;
}
public void setImportEventListener( ImportEventListener listener )
throws TooManyListenersException
{
if ( _listener != null )
throw new TooManyListenersException( Messages.message( "dsml.onlyOneListener" ) );
_listener = listener;
}
public ImportEventListener getImportEventListener()
{
return _listener;
}
public void importDocument( InputStream stream )
throws ImportExportException
{
importDocument( _config.getParser(), new InputSource( stream ) );
}
public void importDocument( Reader reader )
throws ImportExportException
{
importDocument( _config.getParser(), new InputSource( reader ) );
}
public void importDocument( Parser parser, InputSource input )
throws ImportExportException
{
Consumer consumer;
consumer = createConsumer();
parser.setDocumentHandler( consumer );
try {
parser.parse( input );
} catch ( SAXException except ) {
throw new ImportExportException( except );
} catch ( IOException except ) {
throw new ImportExportException( except );
}
if ( consumer.getResults() != null ) {
importEntries( consumer.getResults() );
}
}
public void readImportDescriptor( InputStream input )
throws IOException, SAXException
{
readImportDescriptor( _config.getParser(), new InputSource( input ) );
}
public void readImportDescriptor( Reader input )
throws IOException, SAXException
{
readImportDescriptor( _config.getParser(), new InputSource( input ) );
}
protected void readImportDescriptor( Parser parser, InputSource input )
throws IOException, SAXException
{
ImportDescriptor desc;
desc = new ImportDescriptor();
parser.setDocumentHandler( desc );
parser.parse( input );
setImportDescriptor( desc );
}
protected void notify( String name, int flag )
{
if ( _listener != null ) {
_listener.processedEntry( name, flag );
}
}
protected abstract Consumer createConsumer();
public abstract void importEntries( Enumeration enumeration )
throws ImportExportException;
}