Examples of org.geotools.data.gen.info.Generalization

org.geotools.data.gen.info.Generalization
@author Christian MuellerThis class holds info for one generalization distance the distance used in generalization featureName the name of the feature geomPropertyName the name of the geometry property in the feature dataSourceName the name of the datasource dataSourceNameSpace the namespace of the datasource, may be null @source $URL$

    public SimpleFeatureCollection getFeatures(Query query)
            throws IOException {


        SimpleFeatureSource fs = getFeatureSourceFor(query);
        Query newQuery = getProxyObject(query, fs);
        Generalization di = info.getGeneralizationForDistance(getRequestedDistance(query));
        if (di != null)
            logDistanceInfo(di);
        return new PreGeneralizedFeatureCollection(fs.getFeatures(newQuery), getSchema(),
                indexMapping.get(di == null ? 0.0 : di.getDistance()), info.getGeomPropertyName(),
                getBackendGeometryName(fs));
    }

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        if (access instanceof DataStore) {
            FeatureReader<SimpleFeatureType, SimpleFeature> backendReader = ((DataStore) access)
                    .getFeatureReader(newQuery, transaction);
            String backendGeometryPropertyName = getBackendGeometryName(fs);


            Generalization di = info.getGeneralizationForDistance(getRequestedDistance(query));
            if (di != null)
                logDistanceInfo(di);


            return new PreGeneralizedFeatureReader(getSchema(), indexMapping.get(di == null ? 0.0
                    : di.getDistance()), backendReader, info.getGeomPropertyName(),
                    backendGeometryPropertyName);
        }
        return null;
    }

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    private SimpleFeatureSource getFeatureSourceFor(
            Double requestedDistance) throws IOException {


        if (requestedDistance == null || requestedDistance == 0)
            return getBaseFeatureSource();
        Generalization di = info.getGeneralizationForDistance(requestedDistance);
        return getFeatureSourceFor(di);
    }

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Related Classes of org.geotools.data.gen.info.Generalization

org.geotools.data.gen.PreGeneralizedFeatureSource

java.io.IOException

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