package com.hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
/**
* Configures and provides access to Hibernate sessions, tied to the
* current thread of execution. Follows the Thread Local Session
* pattern, see {@link http://hibernate.org/42.html }.
*/
public class HibernateSessionFactory {
/**
* Location of hibernate.cfg.xml file.
* Location should be on the classpath as Hibernate uses
* #resourceAsStream style lookup for its configuration file.
* The default classpath location of the hibernate config file is
* in the default package. Use #setConfigFile() to update
* the location of the configuration file for the current session.
*/
private static String CONFIG_FILE_LOCATION = "/hibernate.cfg.xml";
private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();
private static Configuration configuration = new Configuration();
private static org.hibernate.SessionFactory sessionFactory;
private static String configFile = CONFIG_FILE_LOCATION;
static {
try {
configuration.configure(configFile);
sessionFactory = configuration.buildSessionFactory();
} catch (Exception e) {
System.err
.println("%%%% Error Creating SessionFactory %%%%");
e.printStackTrace();
}
}
private HibernateSessionFactory() {
}
/**
* Returns the ThreadLocal Session instance. Lazy initialize
* the <code>SessionFactory</code> 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("%%%% Error Creating SessionFactory %%%%");
e.printStackTrace();
}
}
/**
* Close the single hibernate session instance.
*
* @throws HibernateException
*/
public static void closeSession() throws HibernateException {
Session session = (Session) threadLocal.get();
threadLocal.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) {
HibernateSessionFactory.configFile = configFile;
sessionFactory = null;
}
/**
* return hibernate configuration
*
*/
public static Configuration getConfiguration() {
return configuration;
}
}
没有合适的资源?快使用搜索试试~ 我知道了~
Hibernate_query查询数据表中的一个字段.
共15个文件
xml:4个
class:3个
java:3个
2星 需积分: 34 18 下载量 42 浏览量
2008-11-02
16:07:04
上传
评论 1
收藏 492KB RAR 举报
温馨提示
Hibernate_query查询数据表中的一个字段.
资源推荐
资源详情
资源评论
收起资源包目录
Hibernate_query查询数据表中的一个字段.rar (15个子文件)
Hibernate_query查询数据表中的一个字段
test.sql 1KB
project
.project 717B
bin
com
biz
Test.class 1KB
hibernate
HibernateSessionFactory.class 2KB
Student.hbm.xml 1KB
Student.class 2KB
hibernate.cfg.xml 929B
src
com
biz
Test.java 625B
hibernate
Student.hbm.xml 1KB
Student.java 1KB
HibernateSessionFactory.java 3KB
hibernate.cfg.xml 929B
.classpath 395B
.myhibernatedata 465B
lib
mysqljdbc.jar 501KB
共 15 条
- 1
资源评论
- t_chao2012-10-25基本没有,才简单了,了解Hibernate的都会用
- 啦啦啦的哥2013-05-31不是自己想要的,。。。
hechenqingtian
- 粉丝: 57
- 资源: 120
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功