[Hibernate-devel] Please help with 1:n relationship

[Marco P. <mar...@cm...>]

I have problems understanding, the operations/settings nesecary for
the following example...

A client can place multiple orders, a order consists out of multiple
orderlines,
and an orderline contains a product.

I am starting with a simple example that a client just can place multiple
orders...
a order can only refer to 1 client so a one-to-many relationship....

I tried to use the following mapping..
-----------------------
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping SYSTEM "hibernate-mapping.dtd">
<hibernate-mapping>
  <class name="com.mticket.Client" table="Client">
    <id name="clientId" type="long">
      <generator class="cirrus.hibernate.id.HiLoGenerator"/>
    </id>  
    <property name="name"/>
    
    <set role="besteld" table="order">
        <key column="Id" type="long"/>
        <one-to-many class="com.mticket.Order"/>
    </set>
  </class>

  <class name="com.mticket.Order" table="order">
    <id name="orderid" type="long">
      <generator class="cirrus.hibernate.id.HiLoGenerator"/>
    </id>
    <property name="description"/>
    <many-to-one name="Client" column="clientId"
class="com.mticket.Client"/>
  </class>   
</hibernate-mapping>
-----------------------
I am nut sure about the <many-to-one tags and the role....
Can someone help me out?

Greetings..
Marco