Re: Appending to a collection, merging collections, or just "restoring" db-files

[email protected] wrote:

> Jonas,
>
> A while back, i did the required research to create a collection in
> multiple stages. What i was doing was running my (faster) feature
> extractor against all the image files, using several machines,
> dropping the result into one big database, and running the following
> version of the gift-add-collection.pl script.
>
> I'm attaching said script.
>
> I THINK it works along the same lines as you're talking about,
> only I was using several machines to create a collection with this.
>
> I've done the "homework". A collection built with this script is
> bitwise identical to a collection built normally.
>
> Please comment.

Okay...
I haven't actually tried the script, but I've read it and compared it  
to the "old version". And of course I have some thoughts...

The old version compares the modification time of the script, with  
the modification time of the thumbnails and features-files.
If the script is newer it recreates the thumbnails and fts-files.
This may have made sense at some time when the format of the feature  
files was not stable... I can't see when it would ever have been  
interesting for the thumbnails, but then again, I'm not interested in  
the thumbnails at all.

This "new" version removes these modification-time-comparisons, and  
only creates thumbs and fts-files when these files are missing.
Which makes sense to me. The file-formats should be stable by now,  
and if it isn't then removing the obsolete files is pretty easy.
My only "comment" is that although the modification times are  
assigned to a couple of variables, these variables aren't used for  
anything interesting that I can see. Why not remove the variables  
altogether if they don't serve a real purpose?

(I may have missed some other modifications... I just read the script  
briefly)


The gift-add-collection.pl script is doing all sorts of handy stuff.  
I think the best thing about it is that it serves as a good sample  
for how one could do the indexing. I certainly won't use gift-add- 
collection.pl once I get around to writing my own script that fits MY  
needs better. (no thumbnails + appending to a collection, for example)



/Jonas

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