/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2008, Open Source Geospatial Foundation (OSGeo)
*
* 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;
* version 2.1 of the License.
*
* 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.
*/
package org.geotools.gce.imagemosaic.jdbc;
import java.lang.reflect.Constructor;
import java.util.HashMap;
import java.util.Map;
import org.geotools.gce.imagemosaic.jdbc.custom.JDBCAccessOracleGeoRaster;
import org.geotools.gce.imagemosaic.jdbc.custom.JDBCAccessPGRaster;
/**
* Factory for JDBCAccess Objects.
*
* The following rule applies:
*
* For each Config object exists exactly one JDBCAccess object !
*
* @author mcr
*
*/
class JDBCAccessFactory {
static Map<String, JDBCAccess> JDBCAccessMap = new HashMap<String, JDBCAccess>();
/**
* Factory method
*
* @param config
* The Config object
* @return the corresponding JDBCAccess object
* @throws Exception
*/
@SuppressWarnings("unchecked")
static synchronized JDBCAccess getJDBCAcess(Config config) throws Exception {
JDBCAccess jdbcAccess = JDBCAccessMap.get(config.getXmlUrl());
if (jdbcAccess != null) {
return jdbcAccess;
}
SpatialExtension type = config.getSpatialExtension();
if (type == null) {
throw new Exception("Property <spatialExtension> missing");
}
if (type == SpatialExtension.DB2) {
jdbcAccess = new JDBCAccessDB2(config);
} else if (type == SpatialExtension.POSTGIS) {
jdbcAccess = new JDBCAccessPostGis(config);
} else if (type == SpatialExtension.MYSQL) {
jdbcAccess = new JDBCAccessMySql(config);
} else if (type == SpatialExtension.UNIVERSAL) {
jdbcAccess = new JDBCAccessUniversal(config);
} else if (type == SpatialExtension.ORACLE) {
jdbcAccess = new JDBCAccessOracle(config);
} else if (type == SpatialExtension.GEORASTER) {
jdbcAccess = new JDBCAccessOracleGeoRaster(config);
} else if (type == SpatialExtension.PGRASTER) {
jdbcAccess = new JDBCAccessPGRaster(config);
} else if (type == SpatialExtension.CUSTOM) {
String jdbcAccessClassName = config.getJdbcAccessClassName();
Class jdbcAccessClass = Class.forName(jdbcAccessClassName);
try {
Constructor cons = jdbcAccessClass.getConstructor(new Class[] { Config.class });
jdbcAccess = (JDBCAccess) cons.newInstance(new Object[] {config });
} catch (Exception ex) {
String msg = "No public Constructor with an "+config.getClass().getName()+
" argument for class "+jdbcAccessClassName ;
throw new RuntimeException(msg, ex);
}
} else {
throw new Exception("spatialExtension: " + type + " not supported");
}
jdbcAccess.initialize();
JDBCAccessMap.put(config.getXmlUrl(), jdbcAccess);
return jdbcAccess;
}
}