/*
* Copyright (c) 2006-2009 by Abacus Research AG, Switzerland.
* All rights reserved.
*
* This file is part of the Abacus Formula Compiler (AFC).
*
* For commercial licensing, please contact sales(at)formulacompiler.com.
*
* AFC 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 3 of the License, or
* (at your option) any later version.
*
* AFC 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 AFC. If not, see <http://www.gnu.org/licenses/>.
*/
package org.formulacompiler.spreadsheet.internal.odf.xml.stream;
import java.io.OutputStream;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventFactory;
import javax.xml.stream.XMLEventWriter;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.EndElement;
import javax.xml.stream.events.StartElement;
import org.formulacompiler.spreadsheet.SpreadsheetException;
public abstract class DocumentWriter
{
public void write( final OutputStream _outputStream )
throws SpreadsheetException
{
try {
final XMLEventWriter xmlEventWriter = Factory.createXMLEventWriter( _outputStream );
final XMLEventFactory xmlEventFactory = XMLEventFactory.newInstance();
xmlEventWriter.add( xmlEventFactory.createStartDocument() );
final StartElement startElement = getRootElement( xmlEventFactory );
xmlEventWriter.add( startElement );
writeBody( xmlEventFactory, xmlEventWriter );
final EndElement endElement = xmlEventFactory.createEndElement( startElement.getName(), null );
xmlEventWriter.add( endElement );
xmlEventWriter.add( xmlEventFactory.createEndDocument() );
xmlEventWriter.close();
} catch (XMLStreamException e) {
final Throwable nestedException = e.getNestedException();
if (nestedException != null) {
e.initCause( nestedException );
}
throw new SpreadsheetException.SaveError( e );
}
}
protected abstract StartElement getRootElement( XMLEventFactory _xmlEventFactory );
protected abstract void writeBody( final XMLEventFactory _xmlEventFactory, final XMLEventWriter _xmlEventWriter ) throws XMLStreamException, SpreadsheetException;
protected static void writeTextElement( final XMLEventFactory _xmlEventFactory, final XMLEventWriter _xmlEventWriter, QName _elementName, String _text ) throws XMLStreamException
{
_xmlEventWriter.add( _xmlEventFactory.createStartElement( _elementName, null, null ) );
_xmlEventWriter.add( _xmlEventFactory.createCharacters( _text ) );
_xmlEventWriter.add( _xmlEventFactory.createEndElement( _elementName, null ) );
}
}