/*
* Copyright 2004 Clinton Begin
*
* 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.ibatis.dao.engine.transaction.jdbc;
import com.ibatis.common.jdbc.DbcpConfiguration;
import com.ibatis.common.jdbc.SimpleDataSource;
import com.ibatis.dao.client.DaoException;
import com.ibatis.dao.client.DaoTransaction;
import com.ibatis.dao.engine.transaction.DaoTransactionManager;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
/**
* DaoTransactionManager implementation for JDBC
*/
public class JdbcDaoTransactionManager implements DaoTransactionManager {
private DataSource dataSource;
public void configure(Properties properties) {
if (properties.containsKey("DataSource")) {
String type = (String) properties.get("DataSource");
if ("SIMPLE".equals(type)) {
configureSimpleDataSource(properties);
} else if ("DBCP".equals(type)) {
configureDbcp(properties);
} else if ("JNDI".equals(type)) {
configureJndi(properties);
} else {
throw new DaoException("DAO Transaction Manager properties must include a value for 'DataSource' of SIMPLE, DBCP or JNDI.");
}
} else {
throw new DaoException("DAO Transaction Manager properties must include a value for 'DataSource' of SIMPLE, DBCP or JNDI.");
}
}
public DaoTransaction startTransaction() {
return new JdbcDaoTransaction(dataSource);
}
private void configureSimpleDataSource(Map properties) {
dataSource = new SimpleDataSource(properties);
}
private void configureDbcp(Map properties) {
DbcpConfiguration dbcp = new DbcpConfiguration(properties);
dataSource = dbcp.getDataSource();
}
private void configureJndi(Map properties) {
try {
Hashtable contextProps = getContextProperties(properties);
InitialContext initCtx = null;
if (contextProps == null) {
initCtx = new InitialContext();
} else {
initCtx = new InitialContext(contextProps);
}
dataSource = (DataSource) initCtx.lookup((String) properties.get("DBJndiContext"));
} catch (NamingException e) {
throw new DaoException("There was an error configuring the DataSource from JNDI. Cause: " + e, e);
}
}
public void commitTransaction(DaoTransaction trans) {
((JdbcDaoTransaction) trans).commit();
}
public void rollbackTransaction(DaoTransaction trans) {
((JdbcDaoTransaction) trans).rollback();
}
private static Hashtable getContextProperties(Map allProps) {
final String PREFIX = "context.";
Hashtable contextProperties = null;
Iterator keys = allProps.keySet().iterator();
while (keys.hasNext()) {
String key = (String) keys.next();
String value = (String) allProps.get(key);
if (key.startsWith(PREFIX)) {
if (contextProperties == null) {
contextProperties = new Properties();
}
contextProperties.put(key.substring(PREFIX.length()), value);
}
}
return contextProperties;
}
}