/*
* 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) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.data.sql;
import java.util.ArrayList;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.ConnectionProvider;
import org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SQLReportDataFactory;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.DataFactoryReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.AbstractXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.PropertyReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
/**
* Creation-Date: 07.04.2006, 17:47:53
*
* @author Thomas Morgner
*/
public class SQLDataSourceReadHandler extends AbstractXmlReadHandler
implements DataFactoryReadHandler
{
private ConnectionReadHandler connectionProviderReadHandler;
private ArrayList queries;
private ConfigReadHandler configReadHandler;
private DataFactory dataFactory;
public SQLDataSourceReadHandler()
{
queries = new ArrayList();
}
/**
* 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
{
final ConnectionReadHandlerFactory factory = ConnectionReadHandlerFactory.getInstance();
final XmlReadHandler handler = factory.getHandler(uri, tagName);
if (handler instanceof ConnectionReadHandler)
{
connectionProviderReadHandler = (ConnectionReadHandler) handler;
return connectionProviderReadHandler;
}
if (isSameNamespace(uri) == false)
{
return null;
}
if ("config".equals(tagName))
{
configReadHandler = new ConfigReadHandler();
return configReadHandler;
}
if ("query".equals(tagName))
{
final XmlReadHandler queryReadHandler = new PropertyReadHandler();
queries.add(queryReadHandler);
return queryReadHandler;
}
return null;
}
/**
* Done parsing.
*
* @throws SAXException if there is a parsing error.
*/
protected void doneParsing() throws SAXException
{
ConnectionProvider provider = null;
if (connectionProviderReadHandler != null)
{
provider = (ConnectionProvider) connectionProviderReadHandler.getObject();
}
if (provider == null)
{
provider = (ConnectionProvider) getRootHandler().getHelperObject("connection-provider");
}
if (provider == null)
{
throw new SAXException(
"Unable to create SQL Factory: No connection provider specified or recognized.");
}
final SQLReportDataFactory srdf = new SQLReportDataFactory(provider);
if (configReadHandler != null)
{
srdf.setLabelMapping(configReadHandler.isLabelMapping());
}
for (int i = 0; i < queries.size(); i++)
{
final PropertyReadHandler handler = (PropertyReadHandler) queries.get(i);
srdf.setQuery(handler.getName(), handler.getResult());
}
dataFactory = srdf;
}
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
* @throws SAXException if there is a parsing error.
*/
public Object getObject() throws SAXException
{
return dataFactory;
}
public DataFactory getDataFactory()
{
return dataFactory;
}
}