ibatis中iterate的用法

PersonDaoImp如下:

  /**
    * 删除性别为man,年龄为 11,12 的Person记录
    */
   public  int deletePerson(Map<String, Object> map) {
         
         List<Person>  personList= new ArrayList<Person>();

         Person p1= new Person(11);
         person p2= new Person(12);
         personList.add(p1);
         personList.add(p2);

         map.put( "personList",  personList);

         map.put( "sex",'man');
          return getSqlMapClientTemplate().delete(
                                  "person.deletePerson", map);
     }

person.xml如下:

<!--  删除相应的person记录 -->
   < delete  id =" deletePerson "  parameterClass ="map" >

    delete from 表名 where      sex=#sex#         
         < iterate   prepend ="and"  property =" personList "  open ="("
           close =")"  conjunction ="or" >
          age=$ personList[]. age$
         </ iterate > 
       
   </ delete >

输出sql如下:
delete from 表名 where sex='man' and  (age =11  or age=12 )

当然你也可以这么写:
person.xml如下:

<!--  删除相应的person记录 -->
   < delete  id =" deletePerson "  parameterClass ="map" >

    delete from 表名 where      sex=#sex#      and age in   
         < iterate  property =" personList "  open ="("
           close =")"  conjunction ="," >
          $ personList[]. age$
         </ iterate > 
       
   </ delete >

输出sql如下:
delete from 表名 where sex='man' and   age in (11  ,12 )

最后Person代码大致如下:

public  class Person{
   public  Person(int age){
      this.age=age;
  }
   /**
    * 年龄
    */
   private int age;
   /**
    * 性别
    */
   private String sex;
  
    //get/set方法略
    ...
 } //end of Person