/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.engine.util;
import java.util.Iterator;
import java.util.List;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.query.JRQueryExecuterFactory;
import net.sf.jasperreports.engine.query.QueryExecuterFactoryBundle;
import net.sf.jasperreports.extensions.ExtensionsEnvironment;
/**
* Query executer utility class.
*
* @author Lucian Chirita (lucianc@users.sourceforge.net)
* @version $Id: JRQueryExecuterUtils.java 3713 2010-04-08 11:06:05Z teodord $
*/
public final class JRQueryExecuterUtils
{
/**
* Returns a query executer factory for a query language.
*
* @param language the query language
* @return a query executer factory
* @throws JRException
* @see JRProperties#QUERY_EXECUTER_FACTORY_PREFIX
*/
public static JRQueryExecuterFactory getQueryExecuterFactory(String language) throws JRException
{
List bundles = ExtensionsEnvironment.getExtensionsRegistry().getExtensions(QueryExecuterFactoryBundle.class);
for (Iterator it = bundles.iterator(); it.hasNext();)
{
QueryExecuterFactoryBundle bundle = (QueryExecuterFactoryBundle)it.next();
JRQueryExecuterFactory factory = bundle.getQueryExecuterFactory(language);
if (factory != null)
{
return factory;
}
}
throw new JRRuntimeException("No query executer factory registered for the '" + language + "' language.");
}
private JRQueryExecuterUtils()
{
}
}