I am attempting to use GeoTools to create and eclipse plug-in that draws maps.
I've had some luck writing conventional Java applications and decided to move
forward a Rich Client Platform (RCP) implementation to take advantage of the
better GUI support. Anyway, I've hit a roadblock.
At the point in the program execution when I try to create my first map, the
program fails when calling a constructor for a class. The class loads a shape
file and creates a map context. A key point here is that the constructor
itself is empty (it's just a stub for now) and the method that creates the map
context is NEVER called. Even so, if the statement
MapContext mapContext = DefaultMapContext();
is called, the program fails. If the line is commented out, it continues on...
though of course there's little point in doing so since it will never be able
to render a map. A similar thing happens if I use DefaultMapLayer.
Interestingly enough, the program is able to include code open a shape file and
create a ShapeFileDatastore.
Clearly the problem has to do with the ClassLoader and Eclipse's notion of
installing custom class loaders. I am new to the RCP and plug-ins, so I don't
really know how to proceed from here.
I was wondering whether anyone had a solution for this problem. I know that the
uDig folks must have worked it out, but I haven't found any relevant discussion
in the archives for this mailing list.
As I have said so many times before on this discussion group: thanks in advance
for your help.
Gary
---
Gary W. Lucas, Senior Software Engineer
Sonalysts, Inc
215 Parkway North
Waterford, CT 06320
(860) 326-3682
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