Duplication of ColorMapEntry broken AND RasterSymbolizerImpl default property 
name is "raster" instead of "geom"
----------------------------------------------------------------------------------------------------------------

                 Key: GEOT-2819
                 URL: http://jira.codehaus.org/browse/GEOT-2819
             Project: GeoTools
          Issue Type: Bug
          Components: core coverage, core styling
    Affects Versions: 2.6.0
         Environment: Java 1.6
            Reporter: Stefan Alfons Krüger
             Fix For: 2.6.1
         Attachments: 
DuplicatingBrokenForColorMapEntry_AndDefaultPoprNameFixForRasterSymbolizerImpl.patch

Two things:

1. DuplicatingStyleVisitor foregts quantity value. Fixed and JUnit test 
provided.

2. The default constructor RasterSymbolizerImpl() sets the geometry property 
name to "raster". This is hardly ever called, because for example 
StyleFactoryImpl.java is explicitly setting it to "geom"
    public RasterSymbolizer getDefaultRasterSymbolizer() {
        return createRasterSymbolizer("geom",
            filterFactory.literal(1.0), null, null, null, null,
            null, null);
    }

Also the FeatureUtilities.wrapGridCoverage and wrapGridCoverageReader methods 
set geom attribute to "geom" by default. So in the rare case, that the 
RasteSymbolizer is created with  " new RasterSymbolizerImpl() ", it doesn't 
find the attribute "raster", beause it's called "geom".

So my conclusion is, that "geom" is a correct default, and "raster" is a bad 
default. 

This patch also changes the default constructor of RasterSymbolizerImpl to use 
"geom" instead of "raster". 

Tested all JUnit tests against my patch.


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