/**
*
* Copyright 2003-2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.geronimo.derby;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.geronimo.gbean.GBeanInfo;
import org.apache.geronimo.gbean.GBeanInfoBuilder;
import org.apache.geronimo.gbean.GBeanLifecycle;
import org.apache.geronimo.system.serverinfo.ServerInfo;
import java.sql.DriverManager;
import java.sql.SQLException;
/**
* A GBean that represents an instance of an Apache Derby system (a system being
* a collection of different databases).
*
* @version $Rev$ $Date$
*/
public class DerbySystemGBean implements DerbySystem, GBeanLifecycle {
private static final Log log = LogFactory.getLog("DerbySystem");
private static final String SYSTEM_HOME = "derby.system.home";
private static final String SHUTDOWN_ALL = "jdbc:derby:;shutdown=true";
private final ServerInfo serverInfo;
private final String systemHome;
private String actualHome;
public DerbySystemGBean(ServerInfo serverInfo, String derbySystemHome) {
this.serverInfo = serverInfo;
this.systemHome = derbySystemHome;
}
public String getDerbyHome() {
return actualHome;
}
public void doStart() throws Exception {
// set up the system property for the database home
actualHome = System.getProperty(SYSTEM_HOME);
if (actualHome == null) {
actualHome = serverInfo.resolvePath(systemHome);
}
System.setProperty(SYSTEM_HOME, actualHome);
// set the magic system property that causes derby to use explicity
// file sync instead of relying on vm support for file open rws
System.setProperty("derby.storage.fileSyncTransactionLog", "true");
// load the Embedded driver to initialize the home
new org.apache.derby.jdbc.EmbeddedDriver();
log.debug("Started in " + actualHome);
}
public void doStop() throws Exception {
try {
DriverManager.getConnection(SHUTDOWN_ALL, null, null);
} catch (SQLException e) {
// SQLException gets thrown on successful shutdown so ignore
}
System.gc(); // Added per recommendation Derby documentation
log.debug("Stopped");
}
public void doFail() {
try {
DriverManager.getConnection(SHUTDOWN_ALL, null, null);
} catch (SQLException e) {
// SQLException gets thrown on successful shutdown so ignore
}
System.gc(); // Added per recommendation Derby documentation
log.warn("Failed");
}
public static final GBeanInfo GBEAN_INFO;
public static GBeanInfo getGBeanInfo() {
return GBEAN_INFO;
}
static {
GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(DerbySystemGBean.class);
infoFactory.addAttribute("derbySystemHome", String.class, true);
infoFactory.addAttribute("derbyHome", String.class, false);
infoFactory.addReference("ServerInfo", ServerInfo.class, "GBean");
infoFactory.setConstructor(new String[]{"ServerInfo", "derbySystemHome"});
GBEAN_INFO = infoFactory.getBeanInfo();
}
}