| /* |
| * Copyright (c) 2014 DataTorrent, Inc. ALL Rights Reserved. |
| * |
| * 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 com.datatorrent.lib.db.jdbc; |
| |
| import java.sql.Connection; |
| import java.sql.DriverManager; |
| import java.sql.SQLException; |
| import java.util.Properties; |
| |
| import javax.validation.constraints.NotNull; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.base.CharMatcher; |
| import com.google.common.base.Splitter; |
| import com.google.common.collect.Iterables; |
| |
| import com.datatorrent.common.util.DTThrowable; |
| import com.datatorrent.lib.db.Connectable; |
| |
| /** |
| * A {@link Connectable} that uses jdbc to connect to stores. |
| * |
| * @since 0.9.4 |
| */ |
| public class JdbcStore implements Connectable |
| { |
| protected static final Logger logger = LoggerFactory.getLogger(JdbcStore.class); |
| @NotNull |
| private String dbUrl; |
| @NotNull |
| private String dbDriver; |
| private final Properties connectionProps; |
| |
| protected transient Connection connection = null; |
| |
| public JdbcStore() |
| { |
| connectionProps = new Properties(); |
| } |
| |
| @NotNull |
| public String getDbUrl() |
| { |
| return dbUrl; |
| } |
| |
| public void setDbUrl(@NotNull String dbUrl) |
| { |
| this.dbUrl = dbUrl; |
| } |
| |
| @NotNull |
| public String getDbDriver() |
| { |
| return dbDriver; |
| } |
| |
| public void setDbDriver(@NotNull String dbDriver) |
| { |
| this.dbDriver = dbDriver; |
| } |
| |
| public Connection getConnection() |
| { |
| return connection; |
| } |
| |
| /** |
| * Sets the user name. |
| * |
| * @param userName user name |
| * @deprecated use {@link #setConnectionProperties(String)} instead. |
| */ |
| public void setUserName(String userName) |
| { |
| connectionProps.put("user", userName); |
| } |
| |
| /** |
| * Sets the password. |
| * |
| * @param password password |
| * @deprecated use {@link #setConnectionProperties(String)} instead. |
| */ |
| public void setPassword(String password) |
| { |
| connectionProps.put("password", password); |
| } |
| |
| /** |
| * Sets the properties on the jdbc connection. |
| * |
| * @param connectionProperties comma separated list of properties. property key and value are separated by colon. |
| * eg. user:xyz,password:ijk |
| */ |
| public void setConnectionProperties(String connectionProperties) |
| { |
| String[] properties = Iterables.toArray(Splitter.on(CharMatcher.anyOf(":,")).omitEmptyStrings().trimResults().split(connectionProperties), String.class); |
| for (int i = 0; i < properties.length; i += 2) { |
| if (i + 1 < properties.length) { |
| connectionProps.put(properties[i], properties[i + 1]); |
| } |
| } |
| } |
| |
| public Properties getConnectionProps() |
| { |
| return connectionProps; |
| } |
| |
| /** |
| * Create connection with database using JDBC. |
| */ |
| @Override |
| public void connect() |
| { |
| try { |
| // This will load the JDBC driver, each DB has its own driver |
| Class.forName(dbDriver).newInstance(); |
| connection = DriverManager.getConnection(dbUrl, connectionProps); |
| |
| logger.debug("JDBC connection Success"); |
| } |
| catch (Throwable t) { |
| DTThrowable.rethrow(t); |
| } |
| } |
| |
| /** |
| * Close JDBC connection. |
| */ |
| @Override |
| public void disconnect() |
| { |
| try { |
| connection.close(); |
| } |
| catch (SQLException ex) { |
| throw new RuntimeException("closing database resource", ex); |
| } |
| } |
| |
| @Override |
| public boolean isConnected() |
| { |
| try { |
| return !connection.isClosed(); |
| } |
| catch (SQLException e) { |
| throw new RuntimeException("is isConnected", e); |
| } |
| } |
| |
| |
| } |