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

    }
    
    public void testVisitor() throws IOException {
        Filter filter = ff.equal(ff.property("someAtt"), ff.literal("1"), false);
        SimpleFeatureCollection collection = new FilteringSimpleFeatureCollection(delegate, filter);
        collection.accepts(new FeatureVisitor() {
            
            public void visit(Feature feature) {
                assertEquals(1, feature.getProperty("someAtt").getValue());
                
            }

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Examples of org.opengis.feature.FeatureVisitor


        final String[] properties = { "cat", "str1", "the_geom" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_ARCHSITES_11.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, data);


        int nof = parser.getNumberOfFeatures();
        assertEquals(expectedCount, nof);

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Examples of org.opengis.feature.FeatureVisitor


        final String[] properties = { "the_geom", "NAME", "THUMBNAIL", "MAINPAGE" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_POI_10.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType, data);


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

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Examples of org.opengis.feature.FeatureVisitor

        final String[] properties = { "the_geom", "STATE_NAME", "STATE_FIPS", "SUB_REGION",
                "SAMP_POP" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_STATES_11.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType) {
            @Override
            public void visit(final Feature feature) {
                super.visit(feature);
                final String fid = feature.getIdentifier().getID();
                final int numPolygons;

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Examples of org.opengis.feature.FeatureVisitor

        final String[] properties = { "the_geom", "STATE_NAME", "STATE_FIPS", "SUB_REGION",
                "SAMP_POP" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_STATES_11.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType) {
            @Override
            public void visit(final Feature feature) {
                super.visit(feature);
                final String fid = feature.getIdentifier().getID();
                final int numPolygons;

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Examples of org.opengis.feature.FeatureVisitor


        final String[] properties = { "the_geom", "label" };
        final SimpleFeatureType featureType;
        featureType = getTypeView(featureName, schemaLocation, GEOS_ROADS_11.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType,
                GEOS_ROADS_11.DATA);


        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_ROADS_10.CRS, properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType,
                GEOS_ROADS_10.DATA);


        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_11.CRS,
                properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


        GetFeatureParser parser = getParser(featureName, schemaLocation, featureType,
                GEOS_TASMANIA_CITIES_11.DATA);


        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, srsName,
                properties);


        final FeatureVisitor assertor = new FeatureAssertor(featureType);


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

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Examples of org.opengis.feature.FeatureVisitor

                CUBEWERX_ROADSEG.DATA);


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


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

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