关于Hibernate自动生成工具的问题

java 代码

<hibernate-mapping>
    <class name="com.pilotek.ups.pk.hbm.Table1" table="TABLE1" schema="dbo" catalog="UpsMonitor">
        <composite-id name="id" class="com.pilotek.ups.pk.hbm.Table1Id">
            <key-property name="id" type="java.lang.String">
                <column name="id" length="50" />
            </key-property>
            <key-property name="name" type="java.lang.String">
                <column name="name" length="10" />
            </key-property>
        </composite-id>
    </class>
</hibernate-mapping>

pojo
public class Table1  implements java.io.Serializable {


    // Fields

     private Table1Id id;


    // Constructors

    /** default constructor */
    public Table1() {
    }


    // Property accessors

    public Table1Id getId() {
        return this.id;
    }

    public void setId(Table1Id id) {
        this.id = id;
    }

}

public class Table1Id  implements java.io.Serializable {


    // Fields

     private String id;
     private String name;


    // Constructors

    /** default constructor */
    public Table1Id() {
    }

    /** minimal constructor */
    public Table1Id(String id) {
        this.id = id;
    }

    /** full constructor */
    public Table1Id(String id, String name) {
        this.id = id;
        this.name = name;
    }


    // Property accessors

    public String getId() {
        return this.id;
    }

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

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }




   public boolean equals(Object other) {
         if ( (this == other ) ) return true;
         if ( (other == null ) ) return false;
         if ( !(other instanceof Table1Id) ) return false;
         Table1Id castOther = ( Table1Id ) other;

         return ( (this.getId()==castOther.getId()) || ( this.getId()!=null && castOther.getId()!=null && this.getId().equals(castOther.getId()) ) )
 && ( (this.getName()==castOther.getName()) || ( this.getName()!=null && castOther.getName()!=null && this.getName().equals(castOther.getName()) ) );
   }

   public int hashCode() {
         int result = 17;

         result = 37 * result + ( getId() == null ? 0 : this.getId().hashCode() );
         result = 37 * result + ( getName() == null ? 0 : this.getName().hashCode() );
         return result;
   }
}

最近遇到很怪的问题,搞了几天才弄明白, 使用myeclipse和hibernate-tool工具,自动生成代码.hbm.xml,pojo,自动产生的代码见上面, <hibernate-mapping> <class catalog="UpsMonitor" schema="dbo" table="TABLE1" name="com.pilotek.ups.pk.hbm.Table1"> <composite-id class="com.pilotek.ups.pk.hbm.Table1Id" name="id"> <key-property type="java.lang.String" name="id"> <column length="50" name="id"> </column> <key-property type="java.lang.String" name="name"> <column length="10" name="name"> </column> </key-property> </key-property> </composite-id>全部是以组合键的形式出现,搞了半天,把eclipse也折腾了几次,差点崩溃,差点全部要手写了,最后发现原来表必须要设某列为主键,否则产生的代码就是这样,就是以组合键的方式出现.</class></hibernate-mapping>

评论

1 楼 adler_sui 2009-11-30  

我也遇到同样的问题，也是看了楼主的帖子，才恍然大悟