[gdal-dev] Adding Sync to CouchDB/Cloudant Driver

[Norman Barker]

Hi,

I am looking to add sync to the GDAL CouchDB driver. I would rather not add
additional API functions to do this but to wrap it up in the
usual GetFeature call. The first call to GetFeature would initiate a sync,
but thoughts on this are appreciated.

Sync is a useful function that is a key differentiator with CouchDB which
is a multi-master database.

There are a couple of ways of doing the sync, I could force a whole
database sync (the CouchDB model) or we could do a filtered sync based on
the bbox of the current local dataset. I would do the former in the initial
implementation.

As for the persistence, I would like to use leveldb as a local store though
I could use sqlite. The two schemas are as follows;

https://github.com/pouchdb/pouchdb/blob/master/lib/adapters/idb/idb.js#L56
https://github.com/couchbaselabs/TouchDB-iOS/wiki/Object-Design-And-Schema

I will be create a PR on this shortly, but I am interested in any early
feedback.

Norman
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/gdal-dev/attachments/20150303/62f32639/attachment.html>