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Set distinctResult = new HashSet(criteria.list());

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gifor

Post subject: Set distinctResult = new HashSet(criteria.list());

Posted: Mon May 24, 2004 10:36 am

Beginner

Joined: Fri Oct 17, 2003 4:11 am
Posts: 40

A question about the distinctResult that i have with:

Code:

Set distinctResult = new HashSet(criteria.list());

The order of the result (distinctResult) is not the order of the query because the Set is unsorted, it's correct?
How to maintei the order thet i define in the query?! Using TreeSet?

Gio

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steve

Post subject:

Posted: Mon May 24, 2004 1:23 pm

Hibernate Team

Joined: Tue Aug 26, 2003 3:00 pm
Posts: 1816
Location: Austin, TX

The problem is that TreeSet ordering is based on a Comparator. So you'd have to construct a Comparator that knows how to order the results in the manner in which they are ordered in the list.

The easier approach would be to create a new collection impl that functions as both a List and a Set at the same time. I have done this before and its pretty trivial. Basically, have the underlying storage be an ArrayList (to maintain the incoming order), however on add make sure that the given element does not yet exist in the underlying collection.

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gifor

Post subject:

Posted: Mon May 24, 2004 6:19 pm

Beginner

Joined: Fri Oct 17, 2003 4:11 am
Posts: 40

Thanks!

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