动态实例化查询结果

动态实例化查询结果
摘自《精通Hibernate》一书

package mypack;

import java.io.Serializable;
public class CustomerRow implements Serializable {

    private Long id;

    private String name;

    private String orderNumber;
 
   public CustomerRow(Long id,String name, String orderNumber) {
        this.id=id;
        this.name = name;
        this.orderNumber = orderNumber;
    }

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

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

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

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

   public String getOrderNumber() {
        return this.orderNumber;
    }

    public void setOrderNumber(String orderNumber) {
        this.orderNumber = orderNumber;
    }
    
}


Iterator it = serssion.createQuery("select new mypack.CustomerRow(c.id, c.name, o.orderNumber) from Customer c join c.orders o where o where o.orderNumber like 'T%'").list().iterator();
while(it.hasNext()){
	CustomerRow row = (CustomerRow)it.next();
	Long id = row.getId();
	String name = row.getName();
	....
}

CustomerRow类不需要是持久化类,因此不必创建它的对象-关系映射文件.