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Feature request: load(Class, Serializable[])

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cherrydev

Post subject: Feature request: load(Class, Serializable[])

Posted: Tue Feb 10, 2004 10:05 am

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Joined: Wed Nov 19, 2003 10:29 pm
Posts: 27

Or load(Class, List), for that matter.

Obviously this is possible using find(), but having a load() method that handled this simplified special case would probably be more efficient since it would be able to look in the session cache for already loaded objects.

I also don't know of a way of having an select .. from .. where id in (...) construct in HSQL without either having to resort to string-concat-ing or programmatic query construction.

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michael

Post subject:

Posted: Tue Feb 10, 2004 10:08 am

Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany

Code:

session.createQuery("from X x where x.id in :ids").setParameterList("ids", idList).list();

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nickvajberg

Post subject:

Posted: Tue Feb 10, 2004 10:12 am

Senior

Joined: Tue Oct 21, 2003 8:15 am
Posts: 186

Yes, yes, I've been looking for this as well.

Code:

List myList = session.load(X.class);

Very handy, indeed.

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cherrydev

Post subject:

Posted: Tue Feb 10, 2004 10:13 am

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Joined: Wed Nov 19, 2003 10:29 pm
Posts: 27

Didn't know you could do that in HSQL. Now I know.

My original point still stands, though. The query system can't take advantage of the session cache. This would be especially useful if you knew that most or all of the items you're looking for are in the cache.

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gavin

Post subject:

Posted: Tue Feb 10, 2004 9:22 pm

Hibernate Team

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

Well, I've considered this, its not such a bad idea, but it would only improve performance if it was very likely that ALL of the ids were in the session cache (otherwise you have to hit DB anyway).

Its pretty marginal.....

Submit a feature request and see if it gets any votes, if you like.

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cherrydev

Post subject: New issue posted for voting

Posted: Wed Feb 11, 2004 5:19 am

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Joined: Wed Nov 19, 2003 10:29 pm
Posts: 27

If you'd like to vote on this, the new issue is posted here.

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nickvajberg

Post subject:

Posted: Wed Feb 11, 2004 5:28 am

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Joined: Tue Oct 21, 2003 8:15 am
Posts: 186

You should rephrase the issue. It starts with

"This seems like a natural extension to the current load() methods. "

_This_ what???

Users who have not followed this thread will not have a clue on what they are voting about.

Please include a sample.

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cherrydev

Post subject:

Posted: Wed Feb 11, 2004 5:34 am

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Joined: Wed Nov 19, 2003 10:29 pm
Posts: 27

Well, the contents of the issue topic name is 'THIS'.

I'll add another comment to make it more clear.

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