[Sugar-devel] Adding support for new datastore to the XS...
tomeu at sugarlabs.org
Thu May 7 06:54:09 EDT 2009
On Thu, May 7, 2009 at 12:13, Martin Langhoff <martin.langhoff at gmail.com> wrote:
> On Thu, May 7, 2009 at 11:36 AM, Tomeu Vizoso <tomeu at sugarlabs.org> wrote:
>> Is it clearer now?
> yes - thanks!
>>> And while we're at it - is 'preview' completely gone?
>> Check out that page, preview is a metadata property like the others.
> So metadata stores binary files too? I thought it was meant to hold
> straight utf-8 text (or json formatted), but not binary formats. If it
> can store binary formats, it's a good idea to spell that out... and
> which formats to expect too! The trick of the 'metadata' is that it's
> readable by general tools (the journal, moodle) that don't know
> specialised formats...
> Or is 'preview' a text file with a filename of the actual preview file?
No, property files hold strings of bytes. There are a few standard
properties which should have a specified format that were kindly
documented by Bert here:
But anyway, as no type checks are performed by the DS, users of
metadata cannot assume a property's data will have one format or the
other and should take the needed precautions.
> martin.langhoff at gmail.com
> martin at laptop.org -- School Server Architect
> - ask interesting questions
> - don't get distracted with shiny stuff - working code first
> - http://wiki.laptop.org/go/User:Martinlanghoff
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