Hibernate3.2(5):MyEclipse对Hibernate的内置支持

打开MyEclipse6.5，切换到MyEclipse Database Explorer视图，在左边DB Browser空白区右击--->New...--->

Next--->

OK--->

OK--->

Finish

双击左边出现的temp数据库，

将节点展开，可以看到temp库里都有哪些表，当然还有视图，存储过程，函数和触发器。这里我们只关注表。

切换回MyEclipse Java Enterprise视图，新建一个web工程，这里取名为hibetnate3.2，右击工程名--->MyEclipse--->Add Hibernate Capabilities...--->

如上勾选--->Next--->

Next--->

Next--->

Java Package后面的New...->

Finish--->

Finish.

可以看到，MyEclipse6.5已经为我们添加好了Hibernate3.2的所有jar包，并且已经自动生成了hibernate.cfg.xml文件和一个HibernateSessionFactory.java文件。

这里贴出这些自动生成的文件的源代码：

hibernate.cfg.xml :

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

    <session-factory>
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="connection.url">jdbc:mysql://localhost:3306/temp</property>
        <property name="connection.username">root</property>
        <property name="connection.password">mysqladmin</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="myeclipse.connection.profile">temp</property>
    
    </session-factory>

</hibernate-configuration>

HibernateSessionFactory.java :

public class HibernateSessionFactory {

    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() {
    }
	
    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;
    }

	public static void rebuildSessionFactory() {
		try {
			configuration.configure(configFile);
			sessionFactory = configuration.buildSessionFactory();
		} catch (Exception e) {
			System.err
					.println("%%%% Error Creating SessionFactory %%%%");
			e.printStackTrace();
		}
	}

    public static void closeSession() throws HibernateException {
        Session session = (Session) threadLocal.get();
        threadLocal.set(null);

        if (session != null) {
            session.close();
        }
    }
    
	public static org.hibernate.SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	public static void setConfigFile(String configFile) {
		HibernateSessionFactory.configFile = configFile;
		sessionFactory = null;
	}

	public static Configuration getConfiguration() {
		return configuration;
	}

}

我们在src目录下新建一个db.domain包，然后再次切换到MyEclipse Database Explorer视图，temp--->Connected to temp--->temp--->table--->uers右击--->Hibernate Reverse Engineering...--->

Next--->

Next--->Finish--->切换回MyEclipse Java Enterprise视图。

下面贴出红框内的那些自动生成的文件的源码：

Users.hbm.xml :

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="db.domain.Users" table="users" catalog="temp">
        <id name="id" type="integer">
            <column name="id" />
            <generator class="native" />
        </id>
        <property name="name" type="string">
            <column name="name" length="10" />
        </property>
        <property name="age" type="integer">
            <column name="age" />
        </property>
        <property name="married" type="string">
            <column name="married" length="2" />
        </property>
    </class>
</hibernate-mapping>

Users.java :

public class Users implements java.io.Serializable {

	private Integer id;
	private String name;
	private Integer age;
	private String married;

	public Users() {
	}

	public Users(String name, Integer age, String married) {
		this.name = name;
		this.age = age;
		this.married = married;
	}

	public Integer getId() {
		return this.id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getName() {
		return this.name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Integer getAge() {
		return this.age;
	}

	public void setAge(Integer age) {
		this.age = age;
	}

	public String getMarried() {
		return this.married;
	}

	public void setMarried(String married) {
		this.married = married;
	}

}

IBaseHibernateDAO.java :

public interface IBaseHibernateDAO {
	public Session getSession();
}

BaseHibernateDAO.java :

public class BaseHibernateDAO implements IBaseHibernateDAO {
	
	public Session getSession() {
		return HibernateSessionFactory.getSession();
	}
	
}

UsersDAO.java :

public class UsersDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(UsersDAO.class);
	public static final String NAME = "name";
	public static final String AGE = "age";
	public static final String MARRIED = "married";

	public void save(Users transientInstance) {
		log.debug("saving Users instance");
		try {
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Users persistentInstance) {
		log.debug("deleting Users instance");
		try {
			getSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Users findById(java.lang.Integer id) {
		log.debug("getting Users instance with id: " + id);
		try {
			Users instance = (Users) getSession().get("db.domain.Users", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Users instance) {
		log.debug("finding Users instance by example");
		try {
			List results = getSession().createCriteria("db.domain.Users").add(
					Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding Users instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Users as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByName(Object name) {
		return findByProperty(NAME, name);
	}

	public List findByAge(Object age) {
		return findByProperty(AGE, age);
	}

	public List findByMarried(Object married) {
		return findByProperty(MARRIED, married);
	}

	public List findAll() {
		log.debug("finding all Users instances");
		try {
			String queryString = "from Users";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public Users merge(Users detachedInstance) {
		log.debug("merging Users instance");
		try {
			Users result = (Users) getSession().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(Users instance) {
		log.debug("attaching dirty Users instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(Users instance) {
		log.debug("attaching clean Users instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}