Examples of org.geotools.feature.simple.SimpleFeatureBuilder

org.geotools.feature.simple.SimpleFeatureBuilder
of features we would like to build ( assume schema = (geom:Point,name:String) ) SimpleFeatureType featureType = ... //create the builder SimpleFeatureBuilder builder = new SimpleFeatureBuilder(); //set the type of created features builder.setType( featureType ); //add the attributes builder.add( new Point( 0 , 0 ) ); builder.add( "theName" ); //build the feature SimpleFeature feature = builder.buildFeature( "fid" );

This builder builds a feature by maintaining state. Each call to {@link #add(Object)}creates a new attribute for the feature and stores it locally. When using the add method to add attributes to the feature, values added must be added in the same order as the attributes as defined by the feature type. The methods {@link #set(String,Object)} and {@link #set(int,Object)} are used to add attributes out of order.

Each time the builder builds a feature with a call to {@link #buildFeature(String)}the internal state is reset.

This builder can be used to copy features as well. The following code sample demonstrates:
```
 //original feature SimpleFeature original = ...; //create and initialize the builder SimpleFeatureBuilder builder = new SimpleFeatureBuilder(); builder.init(original); //create the new feature SimpleFeature copy = builder.buildFeature( original.getID() ); 
```
The builder also provides a number of static "short-hand" methods which can be used when its not ideal to instantiate a new builder, thought this will trigger some extra object allocations. In time critical code sections it's better to instantiate the builder once and use it to build all the required features.
```
 SimpleFeatureType type = ..; Object[] values = ...; //build a new feature SimpleFeature feature = SimpleFeatureBuilder.build( type, values, "fid" ); ... SimpleFeature original = ...; //copy the feature SimpleFeature feature = SimpleFeatureBuilder.copy( original ); 
```
This class is not thread safe nor should instances be shared across multiple threads.
@author Justin Deoliveira @author Jody Garnett @source $URL$


    }


    protected Feature feature(SimpleFeatureType type, String id, Object... values)
            throws ParseException {
        SimpleFeatureBuilder builder = new SimpleFeatureBuilder(type);
        for (int i = 0; i < values.length; i++) {
            Object value = values[i];
            if (type.getDescriptor(i) instanceof GeometryDescriptor) {
                if (value instanceof String) {
                    value = new WKTReader2().read((String) value);
                }
            }
            builder.set(i, value);
        }
        return builder.buildFeature(id);
    }

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     * Once in a FeatureCollection, they can for example be exported as GeoJSON.
     */
    public static SimpleFeatureCollection makeContourFeatures(List<IsochroneData> isochrones) {
        DefaultFeatureCollection featureCollection = new DefaultFeatureCollection(null,
                contourSchema);
        SimpleFeatureBuilder fbuilder = new SimpleFeatureBuilder(contourSchema);
        for (IsochroneData isochrone : isochrones) {
            fbuilder.add(isochrone.geometry);
            fbuilder.add(isochrone.cutoffSec);
            featureCollection.add(fbuilder.buildFeature(null));
        }
        return featureCollection;
    }

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    private SimpleFeatureCollection makePointFeatures() throws Exception {
        Map<Vertex, Double> points = makePoints();
        /* Stage the point features in memory */
        DefaultFeatureCollection featureCollection = new DefaultFeatureCollection(null, pointSchema);
        SimpleFeatureBuilder fbuilder = new SimpleFeatureBuilder(pointSchema);
        GeometryFactory gf = new GeometryFactory();
        for (Map.Entry<Vertex, Double> entry : points.entrySet()) {
            Vertex vertex = entry.getKey();
            Double travelTime = entry.getValue();
            fbuilder.add(gf.createPoint(vertex.getCoordinate()));
            fbuilder.add(travelTime);
            featureCollection.add(fbuilder.buildFeature(null));
        }
        return featureCollection;
    }

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    private SimpleFeatureCollection makeContourFeatures() throws Exception {
        Map<Integer, Geometry> contours = makeContours();
        /* Stage the features in memory, in order from bottom to top, biggest to smallest */
        DefaultFeatureCollection featureCollection = 
                new DefaultFeatureCollection(null, contourSchema);
        SimpleFeatureBuilder fbuilder = new SimpleFeatureBuilder(contourSchema);
        List<Integer> thresholds = new ArrayList<Integer>(contours.keySet());
        Collections.sort(thresholds);
        //Collections.reverse(thresholds);
        for (Integer threshold : thresholds) {
            Geometry contour = contours.get(threshold);
            fbuilder.add(contour);
            fbuilder.add(threshold);
            featureCollection.add(fbuilder.buildFeature(null));
        }
        return featureCollection;
    }

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        this.fidReader = fidReader;
        this.featureType = featureType;
        this.filteredContent = filteredContent;
        this.session = session;
        this.listenerManager = listenerManager;
        this.featureBuilder = new SimpleFeatureBuilder(featureType);
        this.versionHandler = versionHandler;
    }

View Full Code Here


    public ArcSDEFeatureReader(final ArcSDEAttributeReader attributeReader) throws SchemaException {
        super(attributeReader, attributeReader.getFeatureType());


        this.featureType = attributeReader.getFeatureType();
        this.featureBuilder = new SimpleFeatureBuilder(featureType);
    }

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        store.setTransaction(transaction);


        SimpleFeatureType schema = store.getSchema();
        assertNotNull(schema);


        SimpleFeatureBuilder builder = new SimpleFeatureBuilder(schema);
        if (schema.getDescriptor("ROW_ID") != null) {
            // it's user managed...
            builder.set("ROW_ID", Integer.valueOf(1000));
        }
        builder.set("INT_COL", Integer.valueOf(1000));
        builder.set("STRING_COL", Integer.valueOf(1000));


        SimpleFeatureCollection fc;
        fc = DataUtilities.collection(builder.buildFeature(null));


        List<FeatureId> fids = store.addFeatures(fc);
        assertNotNull(fids);
        assertEquals(1, fids.size());
        return fids;

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        SimpleFeatureTypeBuilder tbuilder = new SimpleFeatureTypeBuilder();
        tbuilder.setName("points");
        tbuilder.add("geom", Point.class);
        tbuilder.add("NAME", String.class);
        SimpleFeatureType type = tbuilder.buildFeatureType();
        SimpleFeatureBuilder fb = new SimpleFeatureBuilder(type);
        ListFeatureCollection features = new ListFeatureCollection(type);
        for (int i = 0, ii = 20; i < ii; i++) {
            features.add(fb.buildFeature(null, new Object[] {
                    new GeometryFactory().createPoint(new Coordinate(1, -1)),
                    "Point" + String.valueOf(i)
            }));
        }
        return features;

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        tbuilder.add("i", Number.class);
        tbuilder.add("j", Long.class);
        tbuilder.add("k", BigDecimal.class);
        tbuilder.add("l", BigInteger.class);
        SimpleFeatureType type = tbuilder.buildFeatureType();
        SimpleFeatureBuilder fb = new SimpleFeatureBuilder(type);
        ListFeatureCollection features = new ListFeatureCollection(type);
        for (int i = 0, ii = 20; i < ii; i++) {
            features.add(fb.buildFeature(null, new Object[] {
                    new GeometryFactory().createPoint(new Coordinate(1, -1)), new Byte((byte) i),
                    new Short((short) i), new Double(i), new Float(i), new String(i + " "),
                    new Date(i), new Boolean(true), new Integer(22),
                    new Long(1234567890123456789L),
                    new BigDecimal(new BigInteger("12345678901234567890123456789"), 2),

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        // verify they are all working
        assertEquals(8, origional.getCount(Query.ALL));
        assertEquals(8, featureStore1.getCount(Query.ALL));


        SimpleFeatureType schema = origional.getSchema();
        SimpleFeatureBuilder build = new SimpleFeatureBuilder(schema);


        int value = 24;
        build.add(Integer.valueOf(value));
        build.add(Short.valueOf((short) value));
        build.add(new Float(value / 10.0F));
        build.add(new Double(value / 10D));
        build.add("FEATURE_" + value);


        Calendar cal = Calendar.getInstance();
        cal.set(2004, 06, value, 0, 0, 0);
        build.add(cal);


        WKTReader reader = new WKTReader();
        build.add(reader.read("POINT(1 1)"));


        SimpleFeature newFeature = build.buildFeature(null);
        SimpleFeatureCollection newFeatures = DataUtilities.collection(newFeature);


        List<FeatureId> newFids = featureStore1.addFeatures(newFeatures);
        assertEquals(0, listener.list.size());
        assertEquals(1, listener1.list.size());

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