001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.geronimo.derby;
019
020 import org.apache.commons.logging.Log;
021 import org.apache.commons.logging.LogFactory;
022 import org.apache.geronimo.gbean.GBeanInfo;
023 import org.apache.geronimo.gbean.GBeanInfoBuilder;
024 import org.apache.geronimo.gbean.GBeanLifecycle;
025 import org.apache.geronimo.system.serverinfo.ServerInfo;
026
027 import java.sql.DriverManager;
028 import java.sql.SQLException;
029
030 /**
031 * A GBean that represents an instance of an Apache Derby system (a system being
032 * a collection of different databases).
033 *
034 * @version $Rev: 514683 $ $Date: 2007-03-05 09:56:29 -0500 (Mon, 05 Mar 2007) $
035 */
036 public class DerbySystemGBean implements DerbySystem, GBeanLifecycle {
037 private static final Log log = LogFactory.getLog("DerbySystem");
038 private static final String SYSTEM_HOME = "derby.system.home";
039 private static final String SHUTDOWN_ALL = "jdbc:derby:;shutdown=true";
040
041 private final ServerInfo serverInfo;
042 private final String systemHome;
043 private String actualHome;
044
045 public DerbySystemGBean(ServerInfo serverInfo, String derbySystemHome) {
046 this.serverInfo = serverInfo;
047 this.systemHome = derbySystemHome;
048 }
049
050 public String getDerbyHome() {
051 return actualHome;
052 }
053
054 public void doStart() throws Exception {
055 // set up the system property for the database home
056 actualHome = System.getProperty(SYSTEM_HOME);
057 if (actualHome == null) {
058 actualHome = serverInfo.resolveServerPath(systemHome);
059 }
060 System.setProperty(SYSTEM_HOME, actualHome);
061
062 // set the magic system property that causes derby to use explicity
063 // file sync instead of relying on vm support for file open rws
064 System.setProperty("derby.storage.fileSyncTransactionLog", "true");
065
066 // load the Embedded driver to initialize the home
067 new org.apache.derby.jdbc.EmbeddedDriver();
068 log.debug("Started in " + actualHome);
069 }
070
071 public void doStop() throws Exception {
072 try {
073 DriverManager.getConnection(SHUTDOWN_ALL, null, null);
074 } catch (SQLException e) {
075 // SQLException gets thrown on successful shutdown so ignore
076 }
077 System.gc(); // Added per recommendation Derby documentation
078 log.debug("Stopped");
079 }
080
081 public void doFail() {
082 try {
083 DriverManager.getConnection(SHUTDOWN_ALL, null, null);
084 } catch (SQLException e) {
085 // SQLException gets thrown on successful shutdown so ignore
086 }
087 System.gc(); // Added per recommendation Derby documentation
088 log.warn("Failed");
089 }
090
091 public static final GBeanInfo GBEAN_INFO;
092
093 public static GBeanInfo getGBeanInfo() {
094 return GBEAN_INFO;
095 }
096
097 static {
098 GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(DerbySystemGBean.class);
099 infoFactory.addAttribute("derbySystemHome", String.class, true);
100 infoFactory.addAttribute("derbyHome", String.class, false);
101 infoFactory.addReference("ServerInfo", ServerInfo.class, "GBean");
102 infoFactory.setConstructor(new String[]{"ServerInfo", "derbySystemHome"});
103 infoFactory.setPriority(GBeanInfo.PRIORITY_CLASSLOADER);
104 GBEAN_INFO = infoFactory.getBeanInfo();
105 }
106 }