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 Post subject: Design question - custom persister?
PostPosted: Mon Feb 07, 2005 2:17 am 
Newbie

Joined: Sat Feb 05, 2005 8:11 am
Posts: 16
Location: Melbourne, Australia
I've read your fine book pretty much from cover to cover, and am just getting ready to get my hands dirty, but first I have one important question which wasn't answered by the text.

In my preliminary design, I have two classes/tables which will contain nothing but balances, being aged balances for the Client class and the Debt class. These will be among the most volatile tables in the system - most of the others contain static, rarely updated info or are mostly insert-only.

For this reason, in SQL terms, I had in mind to perform all the updates to these tables using SQL expressions, something like this...

UPDATE DB_BALANCE SET PAID = (PAID+ 23.45), COMMISSION = (COMMISSION + 2.35), ...

Obviously, this beans bypassing the normal persistence mechanisms, and until today I had in mind to do this by making my balance classes immutable and updating them in hand-written DAO classes. But today, I came across the ClassPersister interface, and I'm wondering whether perhaps I shouldn't write my own custom ClassPersisters instead.

So that's the question. Should I write custom ClassPersisters, or is there some better way of doing this that I've missed so far?

Oh, and if I do write my own ClassPersisters, what is the best persister to extend?

Running Hibernate version 2.1.

TIA for any and all suggestions,
Luke


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 Post subject:
PostPosted: Mon Feb 07, 2005 1:39 pm 
Hibernate Team
Hibernate Team

Joined: Mon Aug 25, 2003 9:11 pm
Posts: 4592
Location: Switzerland
There is a better chance to get an answer to this in the normal User forum. I only answer questions about the book and CaveatEmptor here.


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 Post subject:
PostPosted: Mon Feb 07, 2005 6:20 pm 
Newbie

Joined: Sat Feb 05, 2005 8:11 am
Posts: 16
Location: Melbourne, Australia
Whups! Sorry about that. Feel free to delete this thread.

Cheers,
Luke


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