Re: Indexing and Data Files
> I am working on several projects that need database handling. My
>question is this: Has anyone developed a library or set of routines for
>file handling in a database, or do I need to write my own routines. What I
>am in need of at this time is this:
>
> [Category] [Sub-Category] [Field1] [Field2] [Field3].....[FieldN]
>
> I need to have the DataBase indexed by Category and Sub-Category. For
>example.
<<SNIP>>
Sadly nothing like this is being done in Euphoria. I do, however, happen
to have a library for reading and writing fixed-length files, which sounds
like it's part of what you will need. (I wouldn't have the foggiest idea
of how to index a variable-length index) It is called fileman.e, and you
can find on my website at http://2fargon.hypermart.net/.
I did start work on a btrieve library for Eu, but it never came to
fruition, mostly because I recoiled in horror at the thought of converting
that many lines of C code...
As a VERY simple index, you could make a file with room for two atoms
tacked on to the end - one for a pointer to the previous record in the
index, and a pointer to the next record in the index. You could then use
those values to seek() to the next record in the index. It's not elegant,
but it does work.
I'm afraid that you'll end up having to "roll yer own" for most all of
these I/O routines. I'm already streched pretty thin, but I'd be happy to
help you out where I can.
Brian
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Not Categorized, Please Help
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