[DUG] Scripting languages

[Todd Martin]

So I'm reading, apart from loading a whole row (which could be a problem for 
records with BLOBS, nested datasets etc), there was no major performance 
penalty.

On Wed, 31 May 2006 15:54, Richard Vowles wrote:
> Generally when you ask for something, Bold will load the whole row (all
> fields) into memory - and people have a tendency to ask for a lot of
> stuff.
>
> Bold also layers an intelligent cache on the top of the database, so it
> holds onto objects and it was a little hard to evict them from memory
> unless you actually knew what you were doing (and most people never got
> that far). But it was also very cool because you just navigated around
> your object model and it would just grab the objects as you requested
> them. But it wasn't cool if you wanted to grab the entire object graph
> in one swoop from the database - and you couldn't replace that (you can
> in ECO - you can not only selectively use SQL or OCL, but you can do
> lazy loading or force loading or replace parts of the persistence engine
> if you like).
>
> Bold made a lot very easy, but it also meant you had to do it their way.
> You had to use a bold_id for example - no generators or identity fields.
> ECO has a mapper so you can use an existing database. You can even use
> stored procedures if you want to - you have to override the persistence
> mapper to achieve this though.
>
> Bold is win32. ECO is .NET. ECO is designed with a lot of lessons learnt
> - I just wish they'd back-port it to win32.
>
> Richard
>
>
> ---
> Richard Vowles, Solutions Architect, Borland New Zealand
> email: richard.vowles at borland.com
> phone: +64-9-9184573
> cell: +64-21-467747
> other: MSN richard.vowles at borland.com, skype: rvowles
> blog: http://www.usergroup.org.nz/blogs/selectBlog.html?id=39769
>
> -----Original Message-----
> From: delphi-bounces at ns3.123.co.nz [mailto:delphi-bounces at ns3.123.co.nz]
> On Behalf Of Todd Martin
> Sent: Wednesday, 31 May 2006 3:12 p.m.
> To: NZ Borland Developers Group - Delphi List
> Subject: Re: [DUG] Scripting languages
>
> I've never used BOLD. What is the main cause of the performance
> problems?
> Multiple table joins to represent a class heirarchy?
>
> On Tue, 30 May 2006 21:23, peter at webcentre.co.nz wrote:
> > And "Makes good software" is a rather important criterion. There's no
> > end of crap that can be churned out in the name of good design, with
> > tools tailored for that objective. Why is why I become amused when I
> > hear people praising Bold, for example. Beautiful designs. Useless
> > performance in real-life applications.
> >
> > So please don't mention Bold too often if you want to lure me towards
> > ECO, Richard <G>.
> >
> > cheers,
> > peter
> >
> >
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