hibernate动态数据库进化版 - JAVA

hreadLocal.set(null);

if (session != null) {
session.close();
}
}

/**
* return session factory
*
*/
public static org.hibernate.SessionFactory getSessionFactory() {
return sessionFactory;
}

/**
* return session factory
*
* session factory will be rebuilded in the next call
*/
/*public static void setConfigFile(String configFile) {
TempSessionFactory.configFile = configFile;
sessionFactory = null;
}*/

/**
* return hibernate configuration
*
*/
public static DynamicHibernateConfiguration getConfiguration() {
return configuration;
}

}

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
/**
* 动态会话工厂类
* @author 陈道俊改进版
*
*/
public class DynamicSessionFactory {

// private static String CONFIG_FILE_LOCATION = "/hibernate.cfg.xml";
private static final ThreadLocal threadLocal = new ThreadLocal();
private static DynamicHibernateConfiguration configuration = new DynamicHibernateConfiguration();
private static org.hibernate.SessionFactory sessionFactory;
private static List configurationList = new ArrayList();
private static Map sessinFactoryMap = new HashMap();
// private static String configFile = CONFIG_FILE_LOCATION;

/* static {
try {

configuration.configure(configFile);
sessionFactory = configuration.buildSessionFactory();
} catch (Exception e) {
System.err.println("%%%% 创建临时会话工厂错误 %%%%");
e.printStackTrace();
}
}*/

private DynamicSessionFactory() {
}

/**
* Returns the ThreadLocal Session instance. Lazy initialize the
* SessionFactory if needed.
*
* @return Session
* @throws HibernateException
*/
public static Session getSession() throws HibernateException {
Session session = (Session) threadLocal.get();

if (session == null || !session.isOpen()) {
if (sessionFactory == null) {
rebuildSessionFactory();
}
session = (sessionFactory != null) sessionFactory.openSession()
: null;
threadLocal.set(session);
}

return session;
}

/**
* Rebuild hibernate session factory
*
*/
public static void rebuildSessionFactory() {
try {
// configuration.configure(configFile);
sessionFactory = configuration.buildSessionFactory();
} catch (Exception e) {
System.err.println("%%%% 重建临时会话工厂错误 %%%%");
e.printStackTrace();
}
}

public static void reflashSessionFactory(
DynamicHibernateConfiguration tempConfiguration) {
try {
// configuration.configure(configFile);

// hibernate配置相同的标志
boolean flag = false;
for (Dy

hibernate动态数据库进化版 (六)