hi gilles,
yes, objects _require_ to have an identity field.
oleg
gilles dodinet wrote:
> hi oleg..
> about identity... i wonder if objects _require_ to have a field (say)
> 'identity' that map to the primary key. it seem that they do.
> if not, ive passed through, so how can i achieve that.
> if yes, what about a pool of oid? (some kind of OIDManager and Hashtable
> perhaps?)
> --
> gilles
>>From: Oleg Nitz <[EMAIL PROTECTED]>
>>Reply-To: [EMAIL PROTECTED]
>>To: [EMAIL PROTECTED]
>>Subject: Re: [castor-dev] identity necessary?
>>Date: Wed, 1 Aug 2001 16:34:52 +0300
>>
>>Hi Juergen,
>>
>>HANKE,JUERGEN (HP-Germany,ex1) wrote:
>> > Why do I need to specify the identity in the mapping file?
>>Because ;-)
>>Java objects must be uniquely identified by class and identity,
>>it's a design of Castor JDO.
>>
>> > I have a table which has no primary key, only a foreign key. But the
>>foreign key is not
>> > unique for each row. Or do I need the identity and have to add a dummy
>> > sequence number which is unique?
>>Yes, you do.
>>
>>Oleg
>>
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