Hi Stefan,
Sorry you had to waste time with this. You were on the right track. It
can be fixed by commenting out the blackboard stuff in SIDLayer. Like:
// private Blackboard blackboard = new Blackboard();
// public Blackboard getBlackboard()
// {
// return blackboard;
// }
I'm not sure why this suddenly became a problem.
regards,
Larry
On Sun, Apr 27, 2008 at 6:50 PM, Stefan Steiniger <[EMAIL PROTECTED]> wrote:
> Hei,
>
> ok.. I got a problem where I lack knowledge (and time) on solving the
> problem.
>
> The problem:
> One gets a null pointer exception if one tries to add a SIDLayer in OJ
> 1.2. The null pointer comes from a non existing Blackboard inside
> WMSLayer. SIDLayer actually extends WMLayer (in this case
> WMSLayer.init() is called first - before any code in SIDLayer is
> executed.. so it looks like I can not solve the issue in SIDLayer
> itself, or can I?).
>
> The cause seems to be, that the constructors of WMSLayer have been
> changed within the last half year (from revision 908 on).
>
> I tried now the simple way of just using an old version of WMSLayer. But
> then I get the problem, that JUMP does not know how to render the
> SIDLayer (as it becomes a different instance of WMSLayer, i.e. the old
> WMSLayer that I would like to use has then a different class path...
> jippy). Ok.. a next step would be to add an extra renderer and factory,
> by simply copying and renaming the WMS-Renderer stuff. But.. here I
> stuck again.. I have no idea how to do the assignment between LayerType
> and Renderer (using the contentId stuff)... and this furthermore it is
> also a "stupid" solution. A better Idea would be to use Ole's Pirol
> solution or what Paul has written in the RenderingManager. But I simply
> lack background knowledge and willingness on how to use both approaches
> (every GUI/rendering stuff is far over my self-taught programming
> knowledge).
>
> So.. if anybody has suggestions... or is willing to fix it, then he is
> warmly welcome!!! ..or somenody writes a DOC on how to add a new image
> renderer....
> I am looking forward to the day when I want to find out how to add the
> ImageJ stuff from Erwans team (which probably requires as well to look
> into the rendering stuff :(
>
> time for dinner now
> Stefan
>
> PS: conclusion: MrSID Layers support is dumped since OJ1.2 (F) and
> future versions.
>
>
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