Examples of FeatureVisitor

org.opengis.feature.FeatureVisitor
FeatureVisitor interface to allow for container optimised traversal.
The iterator construct from the Collections api is well understood and loved, but breaks down for working with large GIS data volumes. By using a visitor we allow the implementor of a Feature Collection to make use of additional resources (such as multiple processors or tiled data) concurrently.
This interface is most often used for calculations and data transformations and an implementations may intercept known visitors (such as "bounds" or reprojection) and engage an alternate work flow.
@author Cory Horner (Refractions Research, Inc) @source $URL$

Examples of org.opengis.feature.FeatureVisitor


        final String[] properties = { "the_geom", "label" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_ROADS.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        URL url = TestData.getResource(this, GEOS_ROADS.DATA);
        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, url);


        int nof = parser.getNumberOfFeatures();

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Examples of org.opengis.feature.FeatureVisitor


        final String[] properties = { "the_geom", "label" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_CURVE_ROADS.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        URL url = TestData.getResource(this, GEOS_CURVE_ROADS.DATA);
        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, url);


        int nof = parser.getNumberOfFeatures();

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Examples of org.opengis.feature.FeatureVisitor


        final String[] properties = { "the_geom", "CNTRY_NAME", "POP_CLASS" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_TASMANIA_CITIES.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        URL url = TestData.getResource(this, GEOS_TASMANIA_CITIES.DATA);
        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, url);


        int nof = parser.getNumberOfFeatures();

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Examples of org.opengis.feature.FeatureVisitor

        final String[] properties = { "geometry", "instanceName", "instanceCode" };


        final SimpleFeatureType featureType = getTypeView(featureName, schemaLocation,
                CUBEWERX_GOVUNITCE.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        URL url = TestData.getResource(this, CUBEWERX_GOVUNITCE.DATA);
        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, url);
        int nof = parser.getNumberOfFeatures();
        assertEquals(-1, nof);

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Examples of org.opengis.feature.FeatureVisitor

        final GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, url);


        int nof = parser.getNumberOfFeatures();
        assertEquals(-1, nof);


        FeatureVisitor assertor = new FeatureAssertor(featureType);
        testParseGetFeatures(featureName, featureType, parser, assertor, 3);
    }

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Examples of org.opengis.feature.FeatureVisitor

        final GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, url);


        int nof = parser.getNumberOfFeatures();
        assertEquals(-1, nof);


        FeatureVisitor assertor = new FeatureAssertor(featureType);
        testParseGetFeatures(featureName, featureType, parser, assertor, 2);
    }

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Examples of org.opengis.feature.FeatureVisitor

            andFil = ff.and(boundsCheck, polyCheck);
            
            try {
                fcResult = featureSource.getFeatures(andFil);
                // go through results and copy out the found features
                fcResult.accepts(new FeatureVisitor() {
                    public void visit(Feature feature) {
                        found.add((SimpleFeature) feature);
                    }
                }, null);
            } catch (IOException e1) {

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Examples of org.opengis.feature.FeatureVisitor

        // load shapefile end (docs marker)


        final SpatialIndex index = new STRtree();
        FeatureCollection features = source.getFeatures();
        System.out.println("Slurping in features ...");
        features.accepts(new FeatureVisitor() {


            @Override
            public void visit(Feature feature) {
                SimpleFeature simpleFeature = (SimpleFeature) feature;
                Geometry geom = (MultiLineString) simpleFeature.getDefaultGeometry();

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Examples of org.opengis.feature.FeatureVisitor

        final SimpleFeatureType schema = buildType.buildFeatureType();
        // Configure memory datastore
        final MemoryDataStore memory = new MemoryDataStore();
        memory.createSchema(schema);
        
        collection.accepts(new FeatureVisitor() {
            public void visit(Feature feature) {
                SimpleFeatureBuilder builder = new SimpleFeatureBuilder(schema);
                
                builder.init((SimpleFeature) feature);
                for (AttributeDescriptor descriptor : newTypes) {

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Examples of org.opengis.feature.FeatureVisitor

    FilterFactory ff = CommonFactoryFinder.getFilterFactory(GeoTools.getDefaultHints());
    Filter filter = ff.id(Collections.singleton(ff.featureId("fred")));
    try {
        final Set<FeatureId> removed = new HashSet<FeatureId>();
        SimpleFeatureCollection collection = store.getFeatures( new Query( typeName, filter, Query.NO_NAMES ));
        collection.accepts( new FeatureVisitor(){
            public void visit(Feature feature) {
                removed.add( feature.getIdentifier() );
            }
        }, null );
        store.removeFeatures(filter);

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