/**
SpagoBI - The Business Intelligence Free Platform
Copyright (C) 2005 Engineering Ingegneria Informatica S.p.A.
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
**/
package it.eng.spagobi.tools.dataset.bo;
import it.eng.spagobi.services.dataset.bo.SpagoBiDataSet;
import it.eng.spagobi.utilities.exceptions.SpagoBIRuntimeException;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Constructor;
import java.util.Properties;
import org.apache.log4j.Logger;
import org.xml.sax.InputSource;
/**
* @author Andrea Gioia (andrea.gioia@eng.it)
*
*/
public class DataSetFactory {
private static transient Logger logger = Logger.getLogger(DataSetFactory.class);
public static IDataSet getDataSet( SpagoBiDataSet dataSetConfig ) {
IDataSet dataSet = null;
if (dataSetConfig == null) {
throw new IllegalArgumentException("dataset-config parameter cannot be null");
}
InputStream source = DataSetFactory.class.getResourceAsStream("/datasetTypes.properties");
Properties p = new Properties();
try {
p.load(source);
} catch (IOException e) {
throw new SpagoBIRuntimeException("Cannot load configuration from datasetTypes.properties file", e);
}
String dsType = dataSetConfig.getType();
logger.debug("Dataset type: " + dsType);
String className = p.getProperty(dsType);
logger.debug("Dataset class: " + className);
if (className == null) {
throw new SpagoBIRuntimeException("No dataset class found for dataset type [" + dsType + "]");
}
Constructor c = null;
Object object = null;;
try {
c = Class.forName(className).getConstructor(SpagoBiDataSet.class);
object = c.newInstance(dataSetConfig);
dataSet = (IDataSet) object;
} catch (Exception e) {
throw new SpagoBIRuntimeException("Error while instantiating dataset type [" + dsType
+ "], class [" + className + "]", e);
}
// if ( ScriptDataSet.DS_TYPE.equals( dataSetConfig.getType() ) ) {
// dataSet = new ScriptDataSet( dataSetConfig );
// } else if ( JDBCDataSet.DS_TYPE.equals( dataSetConfig.getType() ) ) {
// dataSet = new JDBCDataSet( dataSetConfig );
// } else if ( JavaClassDataSet.DS_TYPE.equals( dataSetConfig.getType() ) ) {
// dataSet = new JavaClassDataSet( dataSetConfig );
// } else if ( WebServiceDataSet.DS_TYPE.equals( dataSetConfig.getType() ) ) {
// dataSet = new WebServiceDataSet( dataSetConfig );
// } else if ( FileDataSet.DS_TYPE.equals( dataSetConfig.getType() ) ) {
// dataSet = new FileDataSet( dataSetConfig );
// } else {
// logger.error("Invalid dataset type [" + dataSetConfig.getType() + "]");
// throw new IllegalArgumentException("dataset type in dataset-config cannot be equal to [" + dataSetConfig.getType() + "]");
// }
return dataSet;
}
}