FindLinkedSingle ?
Ed Kleban
Ed at Kleban.com
Mon Dec 12 08:24:25 CST 2005
On 12/12/05 2:47 AM, "Ruslan Zasukhin" <sunshine at public.kherson.ua> wrote:
> On 12/12/05 7:19 AM, "Ed Kleban" <Ed at Kleban.com> wrote:
>
>> There's no FindLinkedSingle call in the API.
>>
>> Any reason why not?
>
> How you can be sure ?
>
> Aha, sure is only if you move in director to : 1
>
Yes.
You can be sure if you've already done a lookup to determine count -- a
function which V2 DOES offer.
You can be sure if you're keeping a separate count so you already know if
there is a link and how many links, but just not which link -- which I often
do so that I don't incur the overhead for a needless lookup.
And you can be sure if the relation ship is 1:1 or M:1, as you point out.
And the benefits are:
1) Cleaner syntax
2) Less call and return processing overhead
3) You immediately stop searching as soon as you find one.
... and leads to a whole separate question about BinaryLink Lookup and
Management efficiency that came up while sleeping last night and which I'll
include in a separate email later.
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