On 27/12/2008, at 3:16 PM, Chris Anderson wrote:
<database_dir>/
376256767374932aafbad43539978a53.couch/
data
name
fe58718fe13cd483f4c66fb4b2c512b1.couch/
data
name
views/ <-- views go in here
b84dd25a153afb4a7412ab9c20413210.view/
data
name
Sure.
The small benefit of two separate directories is that it's slightly
easier to script the copying of the database directory as a whole,
without the derived data i.e all you need for a backup. It might look
like this:
<database_dir>/
<slug>-fe58718fe13cd483f4c66fb4b2c512b1.couch/
data
name
<slug>-fe58718fe13cd483f4c66fb4b2c512b1.cache/
<slug>-b84dd25a153afb4a7412ab9c20413210.view/
data
name
A useful additional feature would be for an external to have access to
the (cache) directory for a given database. A very useful application
of _external is for maintaining secondary indexes, and maintaining
that data in the same place as the views would be convenient. Having
access to the name-munging algorithm in an external would also be
useful for the same reason that it's useful in the core e.g. per-
database files.
Probably the lowest-impact way to do this would be to provide an http
end-point that encodes names. I suggest having the dbinfo also provide
the location of the directory/ies associated with the database, even
though the external code could work it out using the config call and
the encoder, because it's one less detail to expose. Many externals
wouldn't need to use the encoder because their file names would be
fixed, and as long as they avoid e.g.
'data'/'name'/'*.couch'/'*.view'/'*.cache' (which I admit could be
made into a better rule), there would be a guarantee of no collisions.
Or, in a single directory you might have a dedicated directory for
_externals
<database_dir>/
376256767374932aafbad43539978a53.couch/
data
name
fe58718fe13cd483f4c66fb4b2c512b1.couch/
data
name
views/ <-- views go in here
b84dd25a153afb4a7412ab9c20413210.view/
data
name
externals/
... data managed by externals ...
Antony Blakey
-------------
CTO, Linkuistics Pty Ltd
Ph: 0438 840 787
He who would make his own liberty secure, must guard even his enemy
from repression.
-- Thomas Paine
