Re: Query kernel

• To: ozone-dev@ozone-db.org
• Subject: Re: Query kernel
• From: Dasarathi <dasar@tetra.iitm.ernet.in>
• Date: Mon, 9 Apr 2001 19:38:34 -0500 (GMT)
• Delivered-To: softw7-ozone-db:org-ozone-dev@ozone-db.org
• In-Reply-To: <01040818390700.00949@rdu26-229-109>

On Sun, 8 Apr 2001, Rob Knapp wrote:

> 
> That seems a little awkward to me.  Would "Select Object From ClassName Where 
> Object.foo() = 'bar'" make more sense?  
> 
> Since a class is defined as having a set of fields and methods, if we know 
> the class then we know what methods it has.  IIRC ozone (and most other 
> OODMS's) have an api call where you can get all instances of a classname 
> provided, so it wouldn't be too horribly hard to implement...(i think).

   ya you can get all instances of a class but then it is just like 
  a RDBMS.Getting all of them and joining is very costly.
  so pointer traversal is better.
   
> 
> Just my two cents.
> --
> Rob Knapp
> GLIMS Project
> http://glims.sourceforge.net
> 
> 

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