hibernate3.0+ejb3 annotaion配置实战+spring1.21 annotation事务控制

【转载】hibernate3.0+ejb3 annotaion配置实战+spring1.21 annotation事务控制

hibernate3.0+ejb3 annotaion配置实战+spring1.21 annotation事务控制

我是比较讨厌xml的人，没有强类型，很多配置出错，包括xdoclet都无法检查。刚好现在的主流框架总算开始支持annotation了，所以玩了一下配置，供参考：
hibernate3.05
hibernate-annotations-3.0beta2
spring1.21

几个配置文件如下：
spring-database.xml(这个文件基本不变，有新的dao在底下加入一行即可。

<? xml version="1.0" encoding="UTF-8" ?>
<! DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" >

< beans >

     <!--  ========================= RESOURCE DEFINITIONS =========================  -->

     < bean  id ="dataSource"  class ="org.apache.commons.dbcp.BasicDataSource"  destroy-method ="close" >
         < property  name ="driverClassName" >< value > ${jdbc.driverClassName} </ value ></ property >
         < property  name ="url" >< value > ${jdbc.url} </ value ></ property >
         < property  name ="username" >< value > ${jdbc.username} </ value ></ property >
         < property  name ="password" >< value > ${jdbc.password} </ value ></ property >
     </ bean >

     < bean  id ="sessionFactory"  class ="org.springframework.orm.hibernate3.LocalSessionFactoryBean" >
         < property  name ="configurationClass" >< value > org.hibernate.cfg.AnnotationConfiguration </ value ></ property >
            < property  name ="dataSource" >< ref  bean ="dataSource" /></ property >
            < property  name ="configLocation" >< value > /hibernate.cfg.xml </ value ></ property >
    </ bean >

     < bean  id ="transactionManager"  class ="org.springframework.orm.hibernate3.HibernateTransactionManager" >
            < property  name ="sessionFactory" >< ref  bean ="sessionFactory" /></ property >
            < property  name ="dataSource" >< ref  bean ="dataSource" /></ property >
     </ bean >

     < bean  class ="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" />

     < bean  class ="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor" >
         < property  name ="transactionInterceptor" >< ref  bean ="transactionInterceptor" /></ property >
     </ bean >

     < bean  id ="transactionInterceptor"  class ="org.springframework.transaction.interceptor.TransactionInterceptor" >
         < property  name ="transactionManager" >< ref  bean ="transactionManager" /></ property >
         < property  name ="transactionAttributeSource" >
             < bean  class ="org.springframework.transaction.annotation.AnnotationTransactionAttributeSource" />
         </ property >
     </ bean >

     <!--  ========================= DAO DEFINITIONS =========================  -->

     < bean  id ="testDao"  class ="org.steeven.TestDaoImpl" >
          < property  name ="sessionFactory" >
             < ref  bean ="sessionFactory" />
         </ property >
     </ bean >

    <!-- ========================= DAO DEFINITIONS ========================= -->
     <bean id="mitService" class="org.steeven.TestServiceImpl"></bean>
</ beans >

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" >
< hibernate-configuration >
     < session-factory >
         < property  name ="hibernate.hbm2ddl.auto" > create-drop </ property >
         < property  name ="hibernate.dialect" > org.hibernate.dialect.MySQLDialect </ property >
         < property  name ="hibernate.cglib.use_reflection_optimizer" > true </ property >
         < property  name ="default-lazy" > false </ property >
        
         <!--  用于hibernate持久化的对象"  -->
         < mapping  class ="org.steeven.Test" />
        
           < listener  type ="pre-update"  class ="org.hibernate.validator.event.ValidatePreUpdateEventListener" />
           < listener  type ="pre-insert"  class ="org.hibernate.validator.event.ValidatePreInsertEventListener" />
     </ session-factory >
</ hibernate-configuration >

上面两个就是配置文件的全部了。下面看看代码：
TestDao.java(注意，就是个普通的dao，事务控制由调用者标注）

public   class  TestDaoImpl extends HibernateDaoSupport implements TestDao  {
    public void save(Test data) {
        getHibernateTemplate().saveOrUpdateAll(Arrays.asList(data));
    }
}

Test.java

@Entity
@Proxy(lazy  =   false )
public   class  Test  {
    int id;
    String name;
    Map<String, String> properties;
    @Column(length = 100)
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    @Id(generate = GeneratorType.AUTO)
    public int getId() {
        return id;
    }

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

    @Transient
    public String getNotStoredProp() {
        return null;
    }


    @Type(type = "org.steeven.database.MapUserType")
    @Column(name = "properties", length = 1000)
        //Map暂时不被支持，自己持久化到一个大字段
    public Map<String, String> getProperties() {
        return properties;
    }

    public void setProperties(Map<String, String> properties) {
        this.properties = properties;
    }
}

TestServiceImpl.java（这个类也是从spring中取得，关键就在@Transactional标记）

@Transactional
public   class  TestServiceImpl implements TestService  {
    public void save(Test data) {
        TestDao dao = (TestDao)ServiceLocator.getInstance().getBean("testDao");
        dao.save(data[0]);
        if (true) throw new RuntimeException(); //看看数据库是不是什么都没有？！
        dao.save(data[1]);
    }
}

现在很清爽了，所有的事务控制只需要加几个@Transaction标记。感谢hibernate+spring
另外，hibernate还提供了基于标记的参数校验，请参考下面文档：

参考资源：
spring1.21自带smaples/jpetstore
http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/