Hibernate_一对多 or 多对1

Hibernate__一对多 or 多对一

??一对多，多对一 ?初解

?

配置文件

?

ecopOrder.hbm.xml

?

<set name="ecopOrderstates" inverse="true" cascade="all"order-by="ORDER_STATE_ID"><key><column name="ORDER_ID" precision="22" scale="0" /></key><one-to-many /></set>

?

ecopOrderstate.hbm.xml

?

<many-to-one name="ecopOrder"fetch="select"><column name="ORDER_ID" precision="22" scale="0" /></many-to-one>

?

orderModel.xml

?

private Set<EcopOrderstate> ecopOrderstates = new HashSet<EcopOrderstate>(0);// 订单->订单状态 1对N关系

?

orderStateModel.xml

?

private EcopOrder ecopOrder;