Thanks Justin,
It is error free now but doesnt do what i want.
What i am trying to do is to get all features from shapefile and
render them on map depending on their colour attribute, e.g.
colour=1 => blue
colour=2 => black ...
I am probably doing something wrong but dont know what:
FeatureSource<SimpleFeatureType,SimpleFeature> featureSource;
FeatureCollection<SimpleFeatureType, SimpleFeature> collection;
FeatureIterator<org.opengis.feature.simple.SimpleFeature> iterator;
featureSource = pgDatastore.getFeatureSource("bugsites");
collection = featureSource.getFeatures();
iterator = collection.features();
try {
while (iterator.hasNext()) {
SimpleFeature feature = iterator.next();
createBugsitesStyle(style,feature,1,Color.BLACK);
createBugsitesStyle(style,feature,2,Color.GREEN); ...
}
} finally {
iterator.close();
}
map.addLayer(fs, style);
private static Style createBugsitesStyle(Style style, SimpleFeature feature,
int colourValue, Color c) throws IllegalFilterException {
StyleBuilder sb = new StyleBuilder();
FilterFactory ff = CommonFactoryFinder.getFilterFactory(null);
PropertyIsEqualTo cf = ff.equals(ff.property("Colour"),
ff.literal(colourValue));
StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
FeatureTypeStyle fts = sf.createFeatureTypeStyle();
Rule r = sf.createRule();
cf.evaluate(feature);
r.setFilter(cf);
Mark circle = sb.createMark(StyleBuilder.MARK_CIRCLE, c,
Color.BLACK, 1);
Graphic grBug = sb.createGraphic(null, circle, null);
PointSymbolizer ps = sb.createPointSymbolizer(grBug);
r.setSymbolizers(new Symbolizer [ ]{ps});
fts.addRule(r);
style.addFeatureTypeStyle(fts);
return style;
}
Yeah, the filter interfaces are now based on geoapi (. The following is
the equivalent:
import org.opengis.filter.FilterFactory;
import org.opengis.filter.PropertyIsEqualTo;
...
FilterFactory ff = CommonFactoryFinder. getFilterFactory(null);
PropertyIsEqualTo cf = ff.equals( ff.property( "color" ),
ff.literal(colorValue) );
Hope that helps.
-Justin
iceDice wrote:
> Hello guys,
>
> I try to do something similar like this in GeoTools-2.5.4 but i got errors.
> It seems that i use some deprecated methods.
>
> FilterFactory ff = CommonFactoryFinder.getFilterFactory(null);
>
> Rule r = sf.createRule();
>
> CompareFilter cf = ff.createCompareFilter(CompareFilter.COMPARE_EQUALS);
> cf.addLeftValue(ff.createAttributeExpression(f, "colour"));
> cf.addRightValue(sb.literalExpression(colourValue));
> r.setFilter(cf);
>
> Can someone tell me how to do this on other way in GeoTools-2.5.4?
>
> Thanks.
--
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.
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