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Loading a class with a composite key without PK class

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graemian

Post subject: Loading a class with a composite key without PK class

Posted: Sat Jul 17, 2004 6:47 am

Newbie

Joined: Sat Jul 17, 2004 6:39 am
Posts: 7

Hi,

I have an object with the following key:

<composite-id>
<key-property name="id" type="string" column="id" length="15"/>
<key-many-to-one name="group" class="Group" column="group_id"/>
</composite-id>

I want to be able to do the equivalent of

session.load(MyClass.class, id, groupInstance)

, but I don't want to declare a PK class. As I understand, my alternatives are

1) declare a PK class
2) use a query to load the object

Are these the only alternatives?

Thanks,
G

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mchyzer

Post subject: Re: Loading a class with a composite key without PK class

Posted: Sun Jul 18, 2004 11:24 am

Senior

Joined: Sat Jul 17, 2004 5:16 pm
Posts: 143

Can't you query by example where you set the key and group? Or query with criteria and set the key as the Java type (not create a POJO for it). Maybe Im missing something here. Chris

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gavin

Post subject:

Posted: Sun Jul 18, 2004 11:56 am

Hibernate Team

Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia

You can use an instance of the class as the "identifier". Hibernate will load the state into the instance you provide.

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