On Thu, Dec 1, 2011 at 12:34 PM, William Lee <[email protected]> wrote:
> I'm a developer at Wikia. We have a use case for searching through a file's
> metadata. This task is challenging now, because the field
> Image.img_metadata is a blob.
>
> We propose expanding the metadata field into a new table. We propose the
> name image_metadata. It will have three columns: img_name, attribute
> (varchar) and value (varchar). It can be joined with Image on img_name.
>
> On the application side, LocalFile's load* and decodeRow methods will have
> to be changed to support the new table.
>
> One issue to consider is the file archive. Should we replicate the metadata
> table for file archive? Or serialize the data and store it in a new table
> (something like fa_metadata)?
>
> Please let us know if you see any issues with this plan. We hope that this
> will be useful to the MediaWiki project, and a candidate to merge back.
>

That was part of bawolff's plan last summer for GSoC when he overhauled
our metadata support. He got a lot of his project done, but never quite got
to this point. Something we'd definitely like to see though!

-Chad

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