Excellent plan +1 from me, if you'd like some help give me a shout (it ties
in with work I'm peripherally involved with at work).
Ian
On 10 July 2013 18:19, Justin Deoliveira <jdeol...@opengeo.org> wrote:
> Hi all,
>
> Some folks may have heard of the geopackage spec that is currently being
> developed by the OGC. For those that haven't the short of it is that it is
> a SQLite based format capable of housing vector and raster datasets, as
> well as pre rendered tile sets (inspired by mbtiles).
>
> We've been working on an implementation for geotools and would like to
> push it in as an supported module. The code is currently on a branch in my
> github repo.
>
> https://github.com/jdeolive/geotools/compare/geopkg
>
> Some additional technical information about the implementation.
>
> It uses the same xerial sqlite driver we use for the spatialite datastore,
> although geopackage has no requirement for spatialite so we just use the
> base driver without any of the spatialite dependencies.
>
> For the vector support the module contains a datastore (jdbc based).
>
> The raster support is currently somewhat lame. In general i am not sure
> how useful the raster bits of the geopackage spec will be. It is actually
> an optional part of the spec but we implemented a rough initial version of
> it. Basically the format gives back a coverage reader for blobs stored in
> the database. It currently supports world images and geotiffs.
>
> The tile stuff is pretty straight forward and given a tile index the
> format will give back an image blob stored in the database, or given a
> range will give back an iterator.
>
> For those interested here is the latest version of the spec.
>
>
> https://dl.dropboxusercontent.com/u/1663985/12-128r7_OpenGIS_GeoPackage_Implementation_Specification_accept_changes.pdf
>
> -Justin
>
> --
> Justin Deoliveira
> OpenGeo - http://opengeo.org
> Enterprise support for open source geospatial.
>
>
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--
Ian Turton
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