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;
}
}
}