Re: Sort Approach in Many to Many Subset
Re: Sort Approach in Many to Many Subset
- Subject: Re: Sort Approach in Many to Many Subset
- From: Jesse Tayler <email@hidden>
- Date: Tue, 21 May 2013 12:41:30 -0400
well, I'm not certain I understand your question but if your method derives that totalOrderAmount then you'd have to sort that in memory after getting a reasonable number of objects from another fetch.
often times in these situations I setup a kind of calculated integer and store the result right on the User table, as an integer, so I can order objects based on that result.
you'd need to identify the places (likely relationships) where operations might possibly change that number, and recalculate that result again at runtime -- again, you'd be storing and saving the resulting number on the user table for later sorting from the database.
or maybe your issue is something else?
On May 21, 2013, at 12:33 PM, James Cicenia <email@hidden> wrote:
>
> I have the following:
>
> customer <<---->> stores.
>
> I want the top five customers by order total for a store.
>
> I wrote a method:
>
> customer.totalOrderAmountByStore(Store store);
>
> What is the best way to sort that?
>
> Is there some cool ERXKEy? Make an abstract Entity in my Model?
>
> Wondering
> James
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