[Hibernate] How do you map value objects?

[Joshua White]

I have a customer object and a customer table. The customer table contains address information. I have chosen to seperate this information in the customer object into a value object named address. How would I map the address value object? I have included a example mapping of the customer object below.

Regards,

Joshua

  
<class
    name="Customer"
    table="CUSTOMER"
>
    <id
        name="id"
        type="long"
        column="id"
    >
        <generator class="assigned" />
    </id>
    <property
        name="firstName"
        type="string"
        column="FISRT_NAME"
    />
<property
        name="lastName"
        type="string"
        column="LAST_NAME"
    />
    
    <!-- 
    The following need to be mapped to a value object named "address" 
    which is a member of customer
   -->        
    <property
        name="address1"
        type="string"
        column="ADDRESS1"
    />
    <property
        name="address2"
        type="string"
        column="ADDRESS1"
    />    
    <property
        name="city"
        type="string"
        column="CITY"
    />
    <property
        name="state"
        type="string"
        column="STATE"
    />
    <property
        name="zip"
        type="string"
        column="ZIP"
    />                
</class>

[ June 22, 2004: Message edited by: Joshua White ]

[Paul Sturrock]

You can split table mappings up into separate POJOs. In fact this is what Hibernate recommend you do (unless address is not a nullable property - in which case its clearer if you keep them together). Write a mapping for each part of the table - customer & address - give them the same PK column, but different POJO names. Then just treat the as you would normal objects.