V4RB2 vLink

[Ruslan Zasukhin]

On 12/30/04 10:17 AM, "erne" <ernestogiannotta at tiscalinet.it> wrote:

>>> after all we are required to know the Index order of linked tables if
>>> we must link records by:
>>> vLink.LinkRecords( inRecIDs() as Integer )
>> 
>> Agree. Index of table is strict thing.
>> It correspond to the order of creation.
>> 
>>> anyway, to specify the 2nd table seems redundant as we have:
>>> vLink.DeleteLinkedRecords( inRecID as Integer, inTableA as VTable )
>>> vLink.DeleteAllLinkedRecords( inTableA as VTable )
>>> 
>>> so it should be enough:
>>> vLink.FindLinked( inRecID as Integer, inTableA as [VTable or Integer] )
>>> as VSet
>> 
>> I see your point...and
>> 
>>> unless vLink will be able to link more than 2 tables in the future
>> 
>> Exactly! Bingo! :-)
>> 
>>> in which case the LinkRecords, DeleteLinkedRecords and
>>> DeleteAllLinkedRecords methods must be updated
>> 
>> NO. because when link will have 3 branches, I still can say
>> 
>> vLink.DeleteAllLinkedRecords( inTableA as VTable )
>> 
>> And this means break links to ALL linked tables of TableA.
>> 
> 
> still
> 
> vLink.LinkRecords( inRecIDs() as Integer )
> 
> remains not consistent... it does not give way to specify link direction

and

> should be
> 
> vLink.LinkRecords( inRecIDs() as Integer, inTableA as VTable, inTableB as
> VTable )
> 
> just like in the vLink.FindLinked syntax

No no no.

When you create link you specify order of tables:
    
    db.CreateBinaryLink( ... T1, T2 ...)

So when you want link 2 records of these tables you do

    link.LinkRecords( Array( 3, 5) )

And you and Valentina know that

    3 -- this is RecID of T1
    5 -- this is RecID of T2.

Direction is not important here. Absolutely.

-- 
Best regards,
Ruslan Zasukhin      [ I feel the need...the need for speed ]
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e-mail: ruslan at paradigmasoft.com
web: http://www.paradigmasoft.com

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