@SuppressWarnings("unchecked")
private static Style createStyle(SimpleFeatureSource source, String fieldName) throws Exception {
StyleFactory styleFactory = CommonFactoryFinder.getStyleFactory();
FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
Function colourFn = ff.function("colorlookup", ff.literal(source), ff.property(fieldName));
Stroke stroke =
styleFactory.createStroke(
colourFn,
ff.literal(1.0f), // line
// width
ff.literal(1.0f)); // opacity
Fill fill = styleFactory.createFill(colourFn, ff.literal(1.0f)); // opacity
Class<?> geomClass = source.getSchema().getGeometryDescriptor().getType().getBinding();
Symbolizer sym = null;
Geometries geomType = Geometries.getForBinding((Class<? extends Geometry>) geomClass);
switch (geomType) {
case POLYGON:
case MULTIPOLYGON:
sym = styleFactory.createPolygonSymbolizer(stroke, fill, null);
break;
case LINESTRING:
case MULTILINESTRING:
sym = styleFactory.createLineSymbolizer(stroke, null);
break;
case POINT:
case MULTIPOINT:
Graphic gr = styleFactory.createDefaultGraphic();
gr.graphicalSymbols().clear();
Mark mark = styleFactory.getCircleMark();
mark.setFill(fill);
mark.setStroke(stroke);
gr.graphicalSymbols().add(mark);
gr.setSize(ff.literal(10.0f));
sym = styleFactory.createPointSymbolizer(gr, null);
break;
default:
throw new IllegalArgumentException("Unsupported geometry type");
}
Style style = SLD.wrapSymbolizers(sym);
return style;
}
