Michael Bedward ha scritto:
> Hi Steve,
>
> Thanks for this - it's a good catch. That method was a quick hack for
> FOSS4G. Perhaps a better long term solution would be to have a method
> in the map layer itself so that lets you check what sort of feature
> source it has. What do you think ?
>
> Andrea, what do you think about a MapLayer method, perhaps returning
> an enum to indicate the vector features vs grid coverage vs grid
> coverage reader ?
Eh... what we really need is a complete overhaul of those classes,
they were conceived for just vector data and has been hacked upon
until this messy situation.
Hack for hack, I would try to be at least consistent with the renderer.
The renderer assumes you have a grid if the feature type has a "grid"
property that contains either a grid coverage or a grid coverage
reader. So I would do something like (pseudo code, untested):
PropertyDescriptor grid = type.getProperty("grid");
if(grid == null)
return false;
Class binding = grid.getType().getBinding();
return AbstractGridCoverage2DReader.class.isAssignableFrom(binding) ||
GridCoverage.class.isAssignableFrom(binding);
Cheers
Andrea
--
Andrea Aime
OpenGeo - http://opengeo.org
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