From: Logan Capaldo <logancapaldo@...>
Date: 2005-09-14T06:02:48+09:00
Subject: Re: KirbyBase


On Sep 13, 2005, at 3:02 PM, Jamey Cribbs wrote:

> rubyhacker@gmail.com wrote:
>
>
>> Ezra Zygmuntowicz wrote:
>>
>>
>>> What if you were to store an array of keys in the
>>> 'relationshipkey' field that specifies the relationships(separate
>>> from the primary key). Then your one to many relationship could
>>> actually be a one to one from an element in the array to the  
>>> child in
>>> the other table.
>>>
>>>
>>>
>>
>> [snippage]
>>
>> I did think of something like this, but it just seemed too hairy,
>> too daunting. I didn't even mention it to Jamey. KB has no way to
>> store an array field as such in the first place, nor do I know how
>> you'd really implement it.
>>
>>
> I thought about this, too, when I started thinking about how to  
> implement one-to-many links.  The problem with this approach is  
> that what happens, for example, if one of the child records is  
> deleted.  Now, KirbyBase has to go through every parent record,  
> check to see if it's array holds that deleted child records key,   
> and then delete key from the array.  Feels a little kludgy.
>
> It also doesn't solve the main problem that Hal has with one-to- 
> many links,  the fact that they are really only good for #selects,  
> not #inserts, or #updates.
>
> As far as the way the KirbyBase beta implements the mechanics of  
> one-to-many links, IMO I think it is a pretty sound implementation  
> (of course, I'm a little biased).  I think what is up in the air  
> now is, how much farther do we push one-to-many links (and  
> possibley other special types).  Do we leave them the way they work  
> now, which, to me is pretty similar to how a traditional RDBMS  
> would work, or, do we work to make them truly "object  
> symetrical" (how's that for making up a non-sensical term) so that,  
> no matter how you push/pull/bend/stretch the one-to-many link  
> "thing", KirbyBase does the right thing.  Kind of like Silly Putty;  
> you can stretch it out and plaster it all over the Sunday Comics  
> and it still fits back inside it's egg.  :-)
>
> Jamey
>
> Confidentiality Notice: This email message, including any  
> attachments, is for the sole use of the intended recipient(s) and  
> may contain confidential and/or privileged information. If you are  
> not the intended recipient(s), you are hereby notified that any  
> dissemination, unauthorized review, use, disclosure or distribution  
> of this email and any materials contained in any attachments is  
> prohibited. If you receive this message in error, or are not the  
> intended recipient(s), please immediately notify the sender by  
> email and destroy all copies of the original message, including  
> attachments.
>
>

The more I read this thread the more the temptation to try my hand at  
making an ORM system for KirbyBase grows. I think I'll do some work  
on it today.