G_G 2008-05-29 10:51 发表评论

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G_G 2007-12-07 15:36 发表评论

G_G 2007-12-03 11:29 发表评论

package  hbn.test.supper.Interceptor;

import  java.io.Serializable;
import  java.util.HashSet;
import  java.util.Iterator;
import  java.util.Set;

import  org.hibernate.CallbackException;
import  org.hibernate.EntityMode;
import  org.hibernate.Interceptor;
import  org.hibernate.Transaction;
import  org.hibernate.type.Type;

public   class  TestInterceptor  implements  Interceptor,Serializable{

     private  Set inserts  =   new  HashSet();
     private  Set updates  =   new  HashSet();
    
     // Session初化一个持久对象 如果这方法中改变了对象属性就返回true 否则null
     public   boolean  onLoad(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types)  throws  CallbackException {
         return   false ;
    }
    // Session flush()中检查到脏数据是调用 如：tr.commit() ....
     public   boolean  onFlushDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types)  throws  CallbackException {
        updates.add(entity);
         return   false ;
    }
    // Session Save() 当修改了对象属性返回true
     public   boolean  onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types)  throws  CallbackException {
        
        inserts.add(entity);
         return   false ;
    }
     // delete
     public   void  onDelete(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types)  throws  CallbackException {
    }
     //flush() 之前调用
     public   void  preFlush(Iterator entities)  throws  CallbackException {
    }
     // flush() 执行SQL语句之后调用
     public   void  postFlush(Iterator entities)  throws  CallbackException {
        
         try  {
             for (Iterator it  =  updates.iterator();it.hasNext();){
                System.out.println( " update= " +  it.next() );    
            }
             for (Iterator it  =  inserts.iterator();it.hasNext();){
                System.out.println( " insert " +  it.next() );    
            }
            
        }  catch  (Exception e) {
            e.printStackTrace();
        }
        
    }

     public  Boolean isTransient(Object entity) {
         //  TODO Auto-generated method stub
         return   null ;
    }
    //决定Session中那些对象是脏数据 如果null Session使用默认处理脏数据
     public   int [] findDirty(Object entity, Serializable id, Object[] currentState, Object[] previousState, String[] propertyNames, Type[] types) {
         return   null ;
    }

     // 当Session构造实体类对象前调用
     public  Object instantiate(String entityName, EntityMode entityMode, Serializable id)  throws  CallbackException {
         return   null ;
    }

     public  String getEntityName(Object object)  throws  CallbackException {
         //  TODO Auto-generated method stub
         return   null ;
    }

     public  Object getEntity(String entityName, Serializable id)  throws  CallbackException {
         //  TODO Auto-generated method stub
         return   null ;
    }

     public   void  afterTransactionBegin(Transaction tx) {
         //  TODO Auto-generated method stub
        
    }

     public   void  beforeTransactionCompletion(Transaction tx) {
         //  TODO Auto-generated method stub
        
    }

     public   void  afterTransactionCompletion(Transaction tx) {
         //  TODO Auto-generated method stub
        
    }

}

package  hbn.test.supper.Interceptor;

import  java.lang.reflect.Field;

import  org.hibernate.Session;
import  org.hibernate.SessionFactory;
import  org.hibernate.Transaction;

import  hbn.HibernateSessionFactory;
import  hbn.bean.T2oo;
import  junit.framework.TestCase;

public   class  TestIC  extends  TestCase {
     private  SessionFactory sessionFactory;
     protected   void  setUp()  throws  Exception {
         super .setUp();
         // 利用java反射得到 HibernateSessionFactory ->
         // private  static org.hibernate.SessionFactory sessionFactory;
         // 要模拟 并发 要 HibernateSessionFactory 得出的 有 threadLocal 不行 
        HibernateSessionFactory.currentSession();
        HibernateSessionFactory.closeSession();
        Field field  =  HibernateSessionFactory. class .getDeclaredField( " sessionFactory " );
        field.setAccessible( true );
        sessionFactory  =  (SessionFactory) field.get(HibernateSessionFactory. class );
    }
    
     public   void  testInc()  throws  Exception {
        TestInterceptor intx  =   new  TestInterceptor();
         // 加载拦截器
        Session session  =  sessionFactory.openSession(intx);
        
        Transaction tr  =  session.beginTransaction();
        T2oo t2  =   new  T2oo( 23 );
        session.save(t2);
        t2.setAvg( new  Integer( 99 ));
        tr.commit();
    }
}

G_G 2007-11-29 10:13 发表评论

G_G 2007-11-26 18:57 发表评论

说明约定-如：
1.表属性 :T1oo->id,name
          T2oo->id,avg,aid( 外键 ),version

2.代码过程是：Save->t1oo对象(T1oo 外键 T2oo)
        T1oo t1oo = new T1oo();
        t1oo.setName("xx");       
        t1oo.setT2ooSet(new HashSet());
        T2oo t2oo2 = new T2oo(24);
        //t2oo2.setT1oo(t1oo); (在下面的本用例表中的第3属性 )
        t1oo.getT2ooSet().add(t2oo2); (在下面的本用例表中的第2属性 )
        session.save(t1oo);

3.本例表使用：
T1oo.hbm.xml ->
        <set name="t2ooSet" inverse="true" cascade = "all"  > (在下面的本用例表中的第1，2属性 )
            <key column="aid"/>
            <one-to-many class="T2oo"/>
        </set>
T2oo.hbm.xml ->
        <many-to-one name="t1oo" column="aid"  class="T1oo" cascade="all" /> (在下面的本用例表中的第1，2属性 )
结合上面说明得表为：
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  | all   |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+

4.执行 Hibernate语句 ：
    Hibernate: insert into t1oo (name, id) values (?, ?)
    Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
5.结果为：
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  2 |  24 | NULL |       0 | //主要就是看 aid属性
+----+-----+------+---------+
1 row in set (0.00 sec)


mysql> select * from t1oo; // 因为 T1oo总是可以 Save 下面就不再提了
+----+------+
| id | name |
+----+------+
|  2 | xx   |
+----+------+
1 row in set (0.00 sec)

可改项：
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | 可改4 | 可改2  |          |          |
+-------+-------+-------+           |   可改1  |
| t2oo  |       | 可改3 |           |          |
+-------+-------+-------+----------+----------+



主本:
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  | all   |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 |    1 |       0 |
+----+-----+------+---------+
1 row in set (0.00 sec)


改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  | all   |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 | NULL|       0 |
+----+-----+------+---------+
1 row in set (0.00 sec)

改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  |       |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)

改2  改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  |       |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)


改3
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  | all   |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 |    1 |       0 |
+----+-----+------+---------+
1 row in set (0.00 sec)

改3 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  |       |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)


改3 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  | all   |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 | NULL |       0 |
+----+-----+------+---------+
1 row in set (0.00 sec)

改3 改2 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | true  |       |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Empty set (0.00 sec)

改4
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false | all   |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 |    1 |       0 |
+----+-----+------+---------+
1 row in set (0.02 sec)

改4 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false | all   |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 |    1 |       0 |
+----+-----+------+---------+
1 row in set (0.00 sec)

改4 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false |       |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)

改4 改3
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false | all   |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 |    1 |       0 |
+----+-----+------+---------+
1 row in set (0.00 sec)

改4 改3 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false |       |          |          |
+-------+-------+-------+  true    |  true    |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)

改4 改1 改2
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false |       |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       | all   |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)


改4 改1 改3
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false |  all  |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: insert into t2oo (version, avg, aid, id) values (?, ?, ?, ?)
Hibernate: update t2oo set aid=? where id=?
mysql> select * from t2oo;
+----+-----+------+---------+
| id | avg | aid  | version |
+----+-----+------+---------+
|  1 |  24 |    1 |       0 |
+----+-----+------+---------+
1 row in set (0.02 sec)

改4 改3 改2 改1
+-------+-------+-------+----------+----------+
|hbn.xml|inverse|cascade|t1oo->t2oo|t2oo->t1oo|
+-------+-------+-------+----------+----------+
| t1oo  | false |       |          |          |
+-------+-------+-------+  true    |  false   |
| t2oo  |       |       |          |          |
+-------+-------+-------+----------+----------+
Hibernate: insert into t1oo (name, id) values (?, ?)
Hibernate: update t2oo set aid=? where id=?
Empty set (0.00 sec)

G_G 2007-11-16 19:20 发表评论

G_G 2007-11-12 16:29 发表评论

G_G 2007-10-23 10:34 发表评论

G_G 2007-08-24 16:36 发表评论

     public  List getFind(String[] dpids ) {
        Criteria cr  =   getCriteriaBegin(Deptid. class );
        
        cr.add( Restrictions.or( 
                    Restrictions.eq( " dpid " , dpids[ 0 ] ) , 
                    Restrictions.eq(  " dpid "  ,dpids[ 1 ] ) )
                );
        
         return  getCriteriaEnd(cr);
    }

	<set name="emails" table="email">//email表 就 2列 id address
		<key column="id"/>  //email表的主键 也是主表的主键
 		<element type="java.lang.String" column="address"/> 
</set> 
     		.java private Set emails;  //存和外键同
2)List  的 .xml
<list name="items" table="item"> 
	  <key column="id"/> //为item表的 idINT(11) NOT NULL,
	  <index column="position"/>    //为表的 position INT(11) NOT NULL,
 <element type="java.lang.String" column="name"/>//为表的name VARCHAR(100) NOT NULL default ''
</list> 
	。。。。。
3. 列为对象 
        <set name="emails" table="email"> 
            <key column="id"/> 
<composite-element class="onlyfun.caterpillar.MailAddress"> 
<property name="address" column="address"/>  //调用 getAddress()
</composite-element> 
        </set> 

G_G 2007-08-09 14:30 发表评论

G_G 2007-07-04 16:49 发表评论