Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread Jeremy Neal Kelly
Perhaps you've already written code that uses linked lists, but in case you haven't, let me ask: why do you need them? Why not manipulate the data directly in the databases? This type of access is marginally slower, but if I understand the purpose of your application, the difference shouldn't be

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread Jeremy Neal Kelly
It's certainly possible to save your linked lists in a database, but the only method I know of is quite tedious. If you like, I'll write it up for you; otherwise, perhaps someone has a neat trick for doing this. Er... as you can see, I went ahead and did just that; this paragraph should've

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread alexrousseau_jta
--- In Jeremy Neal Kelly [EMAIL PROTECTED] wrote: It's certainly possible to save your linked lists in a database, but the only method I know of is quite tedious. If you like, I'll write it up for you; otherwise, perhaps someone has a neat trick for doing this. Er... as you can see, I

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread alexrousseau_jta
--- Jeremy Neal Kelly [EMAIL PROTECTED] wrote: Perhaps you've already written code that uses linked lists, but in case you haven't, let me ask: why do you need them? Why not manipulate the data directly in the databases? This type of access is marginally slower, but if I understand the

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread alexrousseau_jta
Hi, Thanks for your good advice. I am completely ignorant of VFS (still focusing on OS 3.5+ support at this time). How would it help the user if I supported VFS? Also, I intend to support OS3.5+ and I guess that I'll still need a Dm-conversant layer in there, like you did. Thx! Alex Hal

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread Chris Tutty
I think Hal's point (and it's one I agree with) is that rather than have your interface code work directly with the database and record calls that you wrap the database in a module that exposes the objects in an abstract way. I've got into the habit of doing this with every database - you end up

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread Jeremy Neal Kelly
alexrousseau_jta [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I forgot to ask: When you say marginally slower, is it still fast enough to load a 2-bit-depth 160x160 bitmap in 250ms or less? I'm glad to be of service! As for the 'slowness', my (rough) understanding is that it has

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread alexrousseau_jta
Hal Mueller [EMAIL PROTECTED] wrote: At 21:46 + 7/11/03, alexrousseau_jta wrote: How would it help the user if I supported VFS? More memory (probably more important for you than for most apps, since I can see this becoming graphics-heavy). And easier exchange (here Fred, take a look

Re: Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-11 Thread alexrousseau_jta
Jeremy Neal Kelly [EMAIL PROTECTED] wrote: alexrousseau_jta [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] I forgot to ask: When you say marginally slower, is it still fast enough to load a 2-bit-depth 160x160 bitmap in 250ms or less? I'm glad to be of service! As for the

Advice sought on design of a db of linked lists of linked lists of bitmaps?

2003-07-10 Thread Alexandre Rousseau
Hi, title says it all, though cryptically perhaps. I am writing a mini storyboarding application and am about to embark on the persistence part of the project. And I need some advice on how to structure my db(s?) for this. So far, I have structured my data as follows: - the db will contain 0,