求教高手,两天了没能解决,Hibernate外键查询问题???????

Question

三张表,一对多关系
Purchaser表          Purconn表                   Purlist表
purseq  主键         pucseq   主键               purlseq  主键
purflag              purseq   外键               purlcode
purway               purLseq  外键               purlname
purLimt                                          purlmon一条Purchaser中记录对应多条Purlist表中记录  Purconn是关系表
我现在知道 Purchaser的主键  要去查它对应的Purlist中的记录 该怎么查??????
Hibernate 映射的Purconn 信息是  
     private String pucseq;
     private Purchaser purchaser;
     private Purclist purclist;
    // Constructors    /** default constructor */
    public AbstractPurconn() {
    }    
    /** full constructor */
    public AbstractPurconn(Purchaser purchaser, Purclist purclist) {
        this.purchaser = purchaser;
        this.purclist = purclist;
        
    }   映射文件
   
   <hibernate-mapping>
    <class name="com.yitong.po.capital.Purconn" table="PURCONN" schema="ERPT1104">
        <id name="pucseq" type="java.lang.String">
            <column name="PUCSEQ" length="32" />
            <generator class="uuid.hex" />
        </id>
        <many-to-one name="purchaser" class="com.yitong.po.capital.Purchaser"   fetch="select">
         <column name="PURSEQ" length="32" not-null="true" />
        </many-to-one>
        <many-to-one name="purclist" class="com.yitong.po.capital.Purclist" fetch="select">
            <column name="PURLSEQ" length="32" not-null="true" />
        </many-to-one>
    </class>
</hibernate-mapping>映射过来的是对象而不是字段  我该怎么查呢?????????????

Answer 1

Hibernate本来就是针对对象的操作，你即便只取一个字段，它也会返回整个对象。因此，根据一对多关系得到对象，再从对象属性里取出字段。