Hibernate Mapping for id

[Jayaraj Jaganathan]

I have configuration doubt in hibernate.

please look into my configuration

   
        <id name="id" type="java.lang.Long" column="CREDIT_CARD_ID">
            <generator class="sequence">
                <param name="sequence">SEQ_CREDIT_CARD_ID</param>
            </generator>
        </id>

according to above configuration whenever i save CreditCard.java , next sequence id is generated
now , i tried to set id manually by setting

   
CreditCard creditCard = new CreditCard();
creditCard.setId(513);
 

but still it generate next sequence id and getting saved.
please let me know how to configure it accordingly ?

thanks for all your help in advance...

[Paul Sturrock]

What configuration do you want to use? You can either use a generator and delegate to something else to create an id or you can define the id as "assigned" and assign it yourself, you can't do both.

[Jayaraj Jaganathan]

Paul Sturrock wrote:What configuration do you want to use? You can either use a generator and delegate to something else to create an id or you can define the id as "assigned" and assign it yourself, you can't do both.

thanks for your reply

so i planned to have two hbm files
1. sequence
2. assigned

[Paul Sturrock]

Two mappings for the same entity so you can use two different id generation strategies? Why?

[Jayaraj Jaganathan]

Paul Sturrock wrote:Two mappings for the same entity so you can use two different id generation strategies? Why?

its complected to explain, let me try

existing design (shopping cart)
-----------------
when user submit order we store client credit card information in database, here we no need to assign an id, so we used sequence

new requirement (new shopping cart)
--------------------
when user submit order we need to call fraud web service after that we store client credit card information in database,
here fraud web service need credit card id as the request, so we are going to use assigned

[Paul Sturrock]

So, your CC fraud service needs the surrogate key of your credit card entity? Not sure I understand why; but I'll take your word for it (though if your CC fraud service returns a value with business meaning you probably don't want that as your key).

Sounds like you just can't use a generated key. I'd swap to assigned; its just asking for bugs to have two entities and calling different ones dependent on where in your code you persist.