/*
* 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.query;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.util.JRProperties;
import net.sf.jasperreports.engine.util.JRSingletonCache;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: DefaultQueryExecuterFactoryBundle.java 3687 2010-04-06 09:50:42Z shertage $
*/
public final class DefaultQueryExecuterFactoryBundle implements QueryExecuterFactoryBundle
{
private static final JRSingletonCache cache = new JRSingletonCache(JRQueryExecuterFactory.class);
private static final DefaultQueryExecuterFactoryBundle INSTANCE = new DefaultQueryExecuterFactoryBundle();
private DefaultQueryExecuterFactoryBundle()
{
}
/**
*
*/
public static DefaultQueryExecuterFactoryBundle getInstance()
{
return INSTANCE;
}
/**
*
*/
public String[] getLanguages()
{
List languages = new ArrayList();
List properties = JRProperties.getProperties(JRQueryExecuterFactory.QUERY_EXECUTER_FACTORY_PREFIX);
for (Iterator it = properties.iterator(); it.hasNext();)
{
JRProperties.PropertySuffix property = (JRProperties.PropertySuffix) it.next();
languages.add(property.getSuffix());
}
return (String[])languages.toArray(new String[languages.size()]);
}
/**
*
*/
public JRQueryExecuterFactory getQueryExecuterFactory(String language) throws JRException
{
String factoryClassName = JRProperties.getProperty(JRQueryExecuterFactory.QUERY_EXECUTER_FACTORY_PREFIX + language);
if (factoryClassName == null)
{
throw new JRException("No query executer factory class registered for " + language + " queries.");
}
return (JRQueryExecuterFactory) cache.getCachedInstance(factoryClassName);
}
}