Hi, Robert. Be aware that Sun just built a reference implementation to show off the functionality. They access a filesystem, which has no indexes for optimized queries except the filename. They simply hit their goal (it works), and had no ambitions to overfulfil it.
Hiran ----- Original Message ----- From: "Robert S. Sfeir" <[EMAIL PROTECTED]> To: "OJB Users List" <[EMAIL PROTECTED]> Sent: Tuesday, February 25, 2003 9:09 PM Subject: Re: JDO > > On Tuesday, Feb 25, 2003, at 14:59 US/Eastern, Thomas Mahler wrote: > > > SO any queries that do a (non-primary key based) criteria lookup, will > > result in loading the complete extent (all instances of a given class) > > into memory an then filter all matching instances. > > This is even worse than an full table scan in the DBMS! > > WOA! instant cartesian product! Scan all rows of all tables you're > selecting... Geez! Nice going Sun! > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
