+++ /dev/null
-/*
- * Copyright 2005 the original author or authors.
- *
- * 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.wamblee.persistence;
-
-import java.io.File;
-import java.io.PrintWriter;
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.SQLException;
-import java.util.Properties;
-
-import junit.framework.TestCase;
-
-import org.apache.derby.drda.NetworkServerControl;
-import org.apache.derby.jdbc.ClientDriver;
-import org.apache.log4j.Logger;
-import org.wamblee.io.FileSystemUtils;
-
-/**
- * Derby database setup. The external JDBC url used to connect to a running
- * instance is
- *
- * <pre>
- * jdbc:derby:net://localhost:1527/testdb
- * </pre>
- *
- * and the driver class is
- *
- * <pre>
- * com.ibm.db2.jcc.DB2Driver
- * </pre>
- *
- * The following jars will have to be used <code>db2jcc.jar</code> and
- * <code>db2jcc_license_c.jar</code>.
- */
-public class DerbyDatabase implements Database {
-
- /**
- * Logger.
- */
- private static final Logger LOGGER = Logger.getLogger(DerbyDatabase.class);
-
- /**
- * Database user name.
- */
- private static final String USERNAME = "sa";
-
- /**
- * Database password.
- */
- private static final String PASSWORD = "123";
-
- /**
- * Poll interval for the checking the server status.
- */
- private static final int POLL_INTERVAL = 100;
-
- /**
- * Maximum time to wait until the server has started or stopped.
- */
- private static final int MAX_WAIT_TIME = 10000;
-
- /**
- * Database name to use.
- */
- private static final String DATABASE_NAME = "testdb";
-
- /**
- * Path on the file system where derby files are stored.
- */
- private static final String DATABASE_PATH = "target/db/persistence/derby";
-
- /**
- * Derby property required to set the file system path
- * {@link #DATABASE_PATH}.
- */
- private static final String SYSTEM_PATH_PROPERTY = "derby.system.home";
-
- /**
- * Constructs derby database class to allow creation of derby database
- * instances.
- */
- public DerbyDatabase() {
- // Empty
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.wamblee.persistence.Database#start()
- */
- public void start() {
- try {
- // just in case a previous run was killed without the
- // cleanup
- cleanPersistentStorage();
-
- // set database path.
- Properties lProperties = System.getProperties();
- lProperties.put(SYSTEM_PATH_PROPERTY, DATABASE_PATH);
-
- Class.forName("org.apache.derby.jdbc.EmbeddedDriver").newInstance();
-
- runDatabase();
-
- waitUntilStartedOrStopped(true);
-
- // Force creation of the database.
- Connection lConnection = createConnection();
- lConnection.close();
- } catch (Exception e) {
- throw new RuntimeException("Problem starting database", e);
- }
- }
-
- /**
- * Waits until the database server has started or stopped.
- *
- * @param aStarted
- * If true, waits until the server is up, if false, waits until
- * the server is down.
- * @throws InterruptedException
- */
- private void waitUntilStartedOrStopped(boolean aStarted)
- throws InterruptedException {
- long lWaited = 0;
-
- while (aStarted != isStarted()) {
- Thread.sleep(POLL_INTERVAL);
- lWaited += POLL_INTERVAL;
-
- if (lWaited > MAX_WAIT_TIME) {
- throw new RuntimeException(
- "Derby database did not start within " + MAX_WAIT_TIME
- + "ms");
- }
- }
- }
-
- /**
- * Checks if the database server has started or not.
- *
- * @return True if started, false otherwise.
- */
- private boolean isStarted() {
- try {
- getControl().ping();
-
- return true;
- } catch (Exception e) {
- return false;
- }
- }
-
- /**
- * Gets the controller for the database server.
- *
- * @return Controller.
- * @throws Exception
- */
- private NetworkServerControl getControl() throws Exception {
- return new NetworkServerControl();
- }
-
- /**
- * Runs the database.
- *
- */
- private void runDatabase() {
- try {
- getControl().start(new PrintWriter(System.out));
- } catch (Exception e) {
- throw new RuntimeException(e);
- }
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.wamblee.persistence.Database#getJdbcUrl()
- */
- public String getJdbcUrl() {
- return getBaseJdbcUrl()
- + ";create=true;retrieveMessagesFromServerOnGetMessage=true;";
- }
-
- private String getBaseJdbcUrl() {
- return "jdbc:derby:" + DATABASE_NAME;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.wamblee.persistence.Database#getExternalJdbcUrl()
- */
- public String getExternalJdbcUrl() {
- return "jdbc:derby:net://localhost:1527/" + DATABASE_NAME;
- }
-
- /**
- * Shuts down the derby database and cleans up all created files.
- *
- */
- private void shutdownDerby() {
- try {
- DriverManager.getConnection("jdbc:derby:;shutdown=true");
- throw new RuntimeException("Derby did not shutdown, "
- + " should always throw exception at shutdown");
- } catch (Exception e) {
- LOGGER.info("Derby has been shut down.");
- }
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.wamblee.persistence.Database#getDriverClassName()
- */
- public String getDriverClassName() {
- return ClientDriver.class.getName();
- }
-
- /**
- * Gets the user name.
- */
- public String getUsername() {
- return USERNAME;
- }
-
- /**
- * Gets the password.
- *
- * @return
- */
- public String getPassword() {
- return PASSWORD;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see org.wamblee.persistence.Database#createConnection()
- */
- public Connection createConnection() throws SQLException {
- Connection c = DriverManager.getConnection(getJdbcUrl(), getUsername(),
- getPassword());
-
- return c;
- }
-
- /**
- * Stops the derby database and cleans up all derby files.
- */
- public void stop() {
- try {
- // shutdown network server.
- getControl().shutdown();
- waitUntilStartedOrStopped(false);
-
- // shutdown inmemory access.
- shutdownDerby();
- cleanPersistentStorage();
- } catch (Exception e) {
- LOGGER.warn("Problem stopping database", e);
- }
- }
-
- /**
- * Cleans up persistent storage of Derby.
- */
- private void cleanPersistentStorage() {
- File lFile = new File(DATABASE_PATH);
-
- if (lFile.isFile()) {
- TestCase.fail("A regular file by the name " + DATABASE_PATH
- + " exists, clean this up first");
- }
-
- if (!lFile.isDirectory()) {
- return; // no-op already cleanup up.
- }
-
- FileSystemUtils.deleteDirRecursively(DATABASE_PATH);
- }
-}
git://wamblee.org / utils / blobdiff