/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.extensions.datasources.kettle.parser;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.DataFactoryReadHandler;
import org.pentaho.reporting.engine.classic.extensions.datasources.kettle.KettleDataFactory;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import java.util.ArrayList;
public class KettleDataSourceReadHandler extends AbstractXmlReadHandler
implements DataFactoryReadHandler {
private ArrayList<KettleTransformationProducerReadHandler> queries;
private DataFactory dataFactory;
public KettleDataSourceReadHandler() {
queries = new ArrayList<KettleTransformationProducerReadHandler>();
}
/**
* Returns the handler for a child element.
*
* @param tagName the tag name.
* @param atts the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws SAXException if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild( final String uri,
final String tagName,
final Attributes atts )
throws SAXException {
if ( isSameNamespace( uri ) == false ) {
return null;
}
final KettleTransformationProducerReadHandlerFactory instance =
KettleTransformationProducerReadHandlerFactory.getInstance();
final KettleTransformationProducerReadHandler queryReadHandler = instance.getHandler( uri, tagName );
if ( queryReadHandler != null ) {
queries.add( queryReadHandler );
return queryReadHandler;
}
return null;
}
protected void addQueryHandler( final KettleTransformationProducerReadHandler readHandler ) {
queries.add( readHandler );
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException {
final KettleDataFactory srdf = new KettleDataFactory();
for ( int i = 0; i < queries.size(); i++ ) {
final KettleTransformationProducerReadHandler handler = queries.get( i );
srdf.setQuery( handler.getName(), handler.getTransformationProducer() );
}
dataFactory = srdf;
}
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
*/
public Object getObject() throws SAXException {
return dataFactory;
}
public DataFactory getDataFactory() {
return dataFactory;
}
}