Package org.geotools.feature

Examples of org.geotools.feature.DefaultFeatureCollection

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        tb.add("integer", Integer.class);

        GeometryFactory gf = new GeometryFactory();
        SimpleFeatureBuilder b = new SimpleFeatureBuilder(tb.buildFeatureType());

        DefaultFeatureCollection features = new DefaultFeatureCollection(null, b.getFeatureType());
        for (int numFeatures = 0; numFeatures < 5; numFeatures++) {
            Coordinate array[] = new Coordinate[4];
            int j = 0;
            for (int i = 0 + numFeatures; i < 4 + numFeatures; i++) {
                array[j] = new Coordinate(i, i);
                j++;
            }
            b.add(gf.createLineString(array));
            b.add(0);
            features.add(b.buildFeature(numFeatures + ""));
        }
        Double distance = new Double(500);
        BufferFeatureCollection process = new BufferFeatureCollection();
        SimpleFeatureCollection output = process.execute(features, distance, null);
        assertEquals(5, output.size());
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        tb.add("integer", Integer.class);

        GeometryFactory gf = new GeometryFactory();
        SimpleFeatureBuilder b = new SimpleFeatureBuilder(tb.buildFeatureType());

        DefaultFeatureCollection features = new DefaultFeatureCollection(null, b.getFeatureType());
        for (int numFeatures = 0; numFeatures < 5; numFeatures++) {
            Coordinate array[] = new Coordinate[4];
            int j = 0;
            for (int i = 0 + numFeatures; i < 3 + numFeatures; i++) {
                array[j] = new Coordinate(i, i);
                j++;
            }
            array[3] = new Coordinate(numFeatures, numFeatures);
            LinearRing shell = new LinearRing(array, new PrecisionModel(), 0);
            b.add(gf.createPolygon(shell, null));
            b.add(0);
            features.add(b.buildFeature(numFeatures + ""));
        }
        Double distance = new Double(500);
        BufferFeatureCollection process = new BufferFeatureCollection();
        SimpleFeatureCollection output = process.execute(features, distance, null);
        assertEquals(5, output.size());
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            @DescribeParameter(name = "from_measure_attb", description = "Attribute providing start measure of feature") String fromMeasureAttb,
            @DescribeParameter(name = "to_measure_attb", description = "Attribute providing end measure of feature") String toMeasureAttb,
            @DescribeParameter(name = "from_measure", description = "Measure for start of segment to extract") Double fromMeasure,
            @DescribeParameter(name = "to_measure", description = "Measure for end of segment to extract") Double toMeasure)
            throws ProcessException {
        DefaultFeatureCollection results = new DefaultFeatureCollection();
        try {
            if (featureCollection == null || featureCollection.size() == 0) {
                LOGGER.info("No features provided in request");
                return results;
            }
            if (fromMeasureAttb == null
                    || featureCollection.getSchema().getDescriptor(fromMeasureAttb) == null) {
                throw new ProcessException(
                        "The from_measure_attb parameter was not provided or not defined in schema");
            }
            if (toMeasureAttb == null
                    || featureCollection.getSchema().getDescriptor(toMeasureAttb) == null) {
                throw new ProcessException("The to_measure_attb parameter was not provided");
            }
            if (fromMeasure == null) {
                throw new ProcessException("The from_measure parameter was not provided");
            }
            if (toMeasure == null) {
                throw new ProcessException("The to_measure parameter was not provided");
            }
            if (fromMeasure.doubleValue() == toMeasure.doubleValue()) {
                LOGGER.info("Zero length segment requested");
                return results;
            }

            FeatureIterator<Feature> featureIterator = null;
            Feature firstFeature = null;
            try {
                LineMerger lineMerger = new LineMerger();
                if (toMeasure.doubleValue() > fromMeasure.doubleValue()) {
                    featureIterator = featureCollection.features();
                    while (featureIterator.hasNext()) {
                        Feature feature = featureIterator.next();
                        if (firstFeature == null)
                            firstFeature = feature;
                        Double featureFromMeasure = (Double) feature.getProperty(fromMeasureAttb)
                                .getValue();
                        Double featureToMeasure = (Double) feature.getProperty(toMeasureAttb)
                                .getValue();

                        if (fromMeasure < featureToMeasure && toMeasure > featureFromMeasure) {
                            try {
                                if (fromMeasure <= featureFromMeasure
                                        && toMeasure >= featureToMeasure) {
                                    lineMerger.add((Geometry) feature.getDefaultGeometryProperty()
                                            .getValue());
                                } else if (fromMeasure > featureFromMeasure
                                        && toMeasure < featureToMeasure) {
                                    LengthIndexedLine lengthIndexedLine = new LengthIndexedLine(
                                            (Geometry) feature.getDefaultGeometryProperty()
                                                    .getValue());
                                    double featureLength = featureToMeasure - featureFromMeasure;
                                    double startOffset = fromMeasure - featureFromMeasure;
                                    double stopOffset = toMeasure - featureFromMeasure;
                                    double calcLength = ((Geometry) feature
                                            .getDefaultGeometryProperty().getValue()).getLength();
                                    if (calcLength == 0 || featureLength == 0)
                                        continue;
                                    Geometry extracted = lengthIndexedLine.extractLine(startOffset
                                            * calcLength / featureLength, stopOffset * calcLength
                                            / featureLength);
                                    if (!extracted.isEmpty())
                                        lineMerger.add(extracted);
                                } else if (fromMeasure > featureFromMeasure) {
                                    LengthIndexedLine lengthIndexedLine = new LengthIndexedLine(
                                            (Geometry) feature.getDefaultGeometryProperty()
                                                    .getValue());
                                    double featureLength = featureToMeasure - featureFromMeasure;
                                    double startOffset = fromMeasure - featureFromMeasure;
                                    double calcLength = ((Geometry) feature
                                            .getDefaultGeometryProperty().getValue()).getLength();
                                    if (calcLength == 0 || featureLength == 0)
                                        continue;
                                    Geometry extracted = lengthIndexedLine.extractLine(startOffset
                                            * calcLength / featureLength, calcLength);
                                    if (!extracted.isEmpty())
                                        lineMerger.add(extracted);
                                } else {
                                    LengthIndexedLine lengthIndexedLine = new LengthIndexedLine(
                                            (Geometry) feature.getDefaultGeometryProperty()
                                                    .getValue());
                                    double featureLength = featureToMeasure - featureFromMeasure;
                                    double stopOffset = toMeasure - featureFromMeasure;
                                    double calcLength = ((Geometry) feature
                                            .getDefaultGeometryProperty().getValue()).getLength();
                                    if (calcLength == 0 || featureLength == 0)
                                        continue;
                                    Geometry extracted = lengthIndexedLine.extractLine(0,
                                            stopOffset * calcLength / featureLength);
                                    if (extracted.isEmpty() || extracted.getLength() == 0.0) {
                                        LOGGER.info("Empty segment: featureFromMeasure="
                                                + featureFromMeasure + " featureToMeasure:"
                                                + featureToMeasure + " toMeasure:" + toMeasure
                                                + " fromMeasure:" + fromMeasure);
                                    } else {
                                        lineMerger.add(extracted);
                                    }
                                }
                            } catch (Exception e) {
                                LOGGER.warning("Error merging line strings: " + e
                                        + " featureFromMeasure=" + featureFromMeasure
                                        + " featureToMeasure:" + featureToMeasure + " toMeasure:"
                                        + toMeasure + " fromMeasure:" + fromMeasure);
                            }
                        }
                    }
                    results.add(createTargetFeature(firstFeature, (SimpleFeatureType) firstFeature
                            .getType(), new MultiLineString((LineString[]) lineMerger
                            .getMergedLineStrings().toArray(new LineString[0]), geometryFactory)));
                }
            } finally {
                if (featureIterator != null)
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            } catch (Exception e) {
                throw new ProcessException("Unknown CRS code: EPSG:4326", e);
            }
            MathTransform crsTransform = CRS.findMathTransform(crs, epsg4326);

            DefaultFeatureCollection results = new DefaultFeatureCollection();
            FeatureType targetFeatureType = createTargetFeatureType(featureCollection.getSchema());
            Unit fromUnit = SI.METER;
            Unit toUnit = Unit.valueOf("mi");
            UnitConverter unitConvert = fromUnit.getConverterTo(toUnit);
            Feature nearestFeature = null;
            double nearestDistance = 9e9;
            double nearestBearing = 0;
            double[] nearestPoint = new double[2];
            FeatureIterator featureIterator = featureCollection.features();
            try {
                while (featureIterator.hasNext()) {
                    SimpleFeature f = (SimpleFeature) featureIterator.next();
                    if (f.getDefaultGeometryProperty().getValue() == null)
                        continue;
                    DistanceOp op = new DistanceOp(point, (Geometry) f.getDefaultGeometryProperty()
                            .getValue());
                    Coordinate[] co = op.closestPoints();
                    double[] co0 = new double[] { co[0].x, co[0].y, };
                    double[] co1 = new double[] { co[1].x, co[1].y, };
                    double[] geo0 = new double[2];
                    double[] geo1 = new double[2];
                    crsTransform.transform(co0, 0, geo0, 0, 1);
                    crsTransform.transform(co1, 0, geo1, 0, 1);

                    // get distance
                    Measure m = DefaultGeographicCRS.WGS84.distance(geo0, geo1);
                    if (m.doubleValue() > nearestDistance)
                        continue;
                    nearestFeature = f;
                    nearestDistance = m.doubleValue();
                    nearestBearing = calcBearing(co);
                    nearestPoint[0] = geo1[0];
                    nearestPoint[1] = geo1[1];
                }
            } finally {
                featureIterator.close();
            }
            if (nearestFeature != null) {
                nearestDistance = unitConvert.convert(nearestDistance);
                results.add(createTargetFeature(nearestFeature,
                        (SimpleFeatureType) targetFeatureType, nearestPoint, nearestDistance,
                        nearestBearing));
            }
            return results;
        } catch (ProcessException e) {
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            } catch (Exception e) {
                throw new ProcessException("Unknown CRS code: EPSG:4326", e);
            }
            MathTransform crsTransform = CRS.findMathTransform(crs, epsg4326);

            DefaultFeatureCollection results = new DefaultFeatureCollection();
            FeatureType targetFeatureType = createTargetFeatureType(featureCollection.getSchema());
            Unit fromUnit = SI.METER;
            Unit toUnit = Unit.valueOf("mi");
            UnitConverter unitConvert = fromUnit.getConverterTo(toUnit);
            Feature nearestFeature = null;
            double nearestDistance = 9e9;
            double nearestBearing = 0;
            FeatureIterator featureIterator = featureCollection.features();
            try {
                while (featureIterator.hasNext()) {
                    SimpleFeature f = (SimpleFeature) featureIterator.next();
                    if (f.getDefaultGeometryProperty().getValue() == null)
                        continue;
                    DistanceOp op = new DistanceOp(point, (Geometry) f.getDefaultGeometryProperty()
                            .getValue());
                    Coordinate[] co = op.closestPoints();
                    double[] co0 = new double[] { co[0].x, co[0].y, };
                    double[] co1 = new double[] { co[1].x, co[1].y, };
                    double[] geo0 = new double[2];
                    double[] geo1 = new double[2];
                    crsTransform.transform(co0, 0, geo0, 0, 1);
                    crsTransform.transform(co1, 0, geo1, 0, 1);

                    // get distance
                    Measure m = DefaultGeographicCRS.WGS84.distance(geo0, geo1);
                    if (m.doubleValue() > nearestDistance)
                        continue;
                    nearestFeature = f;
                    nearestDistance = m.doubleValue();
                    nearestBearing = calcBearing(co);
                }
            } finally {
                featureIterator.close();
            }
            if (nearestFeature != null) {
                nearestDistance = unitConvert.convert(nearestDistance);
                results.add(createTargetFeature(nearestFeature,
                        (SimpleFeatureType) targetFeatureType, nearestDistance, nearestBearing));
            }
            return results;
        } catch (ProcessException e) {
            throw e;
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            @DescribeParameter(name = "features", description = "Input feature collection") FeatureCollection featureCollection,
            @DescribeParameter(name = "from_measure_attb", description = "Attribute providing start measure of feature") String fromMeasureAttb,
            @DescribeParameter(name = "to_measure_attb", description = "Attribute providing end measure of feature") String toMeasureAttb,
            @DescribeParameter(name = "measure", description = "Measure of the point along the feature to be computed") Double measure)
            throws ProcessException {
        DefaultFeatureCollection results = new DefaultFeatureCollection();
        try {
            if (featureCollection == null || featureCollection.size() == 0) {
                LOGGER.info("No features provided in request");
                return results;
            }
            if (fromMeasureAttb == null
                    || featureCollection.getSchema().getDescriptor(fromMeasureAttb) == null) {
                throw new ProcessException(
                        "The from_measure_attb parameter was not provided or not defined in schema");
            }
            if (toMeasureAttb == null
                    || featureCollection.getSchema().getDescriptor(toMeasureAttb) == null) {
                throw new ProcessException("The to_measure_attb parameter was not provided");
            }
            if (measure == null) {
                throw new ProcessException("The measure parameter was not provided");
            }
            SimpleFeatureType targetFeatureType = createTargetFeatureType(featureCollection
                    .getSchema());

            FeatureIterator<Feature> featureIterator = null;
            try {
                featureIterator = featureCollection.features();
                Feature feature = featureIterator.next();
                Double featureFromMeasure = (Double) feature.getProperty(fromMeasureAttb)
                        .getValue();
                Double featureToMeasure = (Double) feature.getProperty(toMeasureAttb).getValue();
                LengthIndexedLine lengthIndexedLine = new LengthIndexedLine((Geometry) feature
                        .getDefaultGeometryProperty().getValue());
                double featureLength = featureToMeasure - featureFromMeasure;
                double startOffset = measure - featureFromMeasure;
                double calcLength = ((Geometry) feature.getDefaultGeometryProperty().getValue())
                        .getLength();
                if (calcLength == 0) {
                    LOGGER.info("Edge feature has zero length");
                    return results;
                }
                if (featureLength == 0) {
                    LOGGER.info("Requested feature has zero length");
                    return results;
                }
                Coordinate point = lengthIndexedLine.extractPoint(startOffset * calcLength
                        / featureLength);
                results.add(createTargetFeature(feature, targetFeatureType, point));
            } finally {
                if (featureIterator != null)
                    featureIterator.close();
            }
            return results;
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        tb.add("geom", Point.class);
        tb.add("name", String.class);
       
        SimpleFeatureType featureType = tb.buildFeatureType();

        delegate = new DefaultFeatureCollection(null, featureType);

        SimpleFeatureBuilder b = new SimpleFeatureBuilder(featureType);
        for (int i = 0; i < 10; i++) {
            b.add(new GeometryFactory().createPoint(new Coordinate(i,i)));
            b.add(String.valueOf(i));
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// polygonInteraction start
void polygonInteraction() {
    SimpleFeatureCollection polygonCollection = null;
    SimpleFeatureCollection fcResult = null;
    final DefaultFeatureCollection found = new DefaultFeatureCollection();
   
    FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
    SimpleFeature feature = null;
   
    Filter polyCheck = null;
    Filter andFil = null;
    Filter boundsCheck = null;
   
    String qryStr = null;
   
   
   
    SimpleFeatureIterator it = polygonCollection.features();
    try {
        while (it.hasNext()) {
            feature = it.next();
            BoundingBox bounds = feature.getBounds();
            boundsCheck = ff.bbox(ff.property("the_geom"), bounds);
           
            Geometry geom = (Geometry) feature.getDefaultGeometry();
            polyCheck = ff.intersects(ff.property("the_geom"), ff.literal(geom));
           
            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) {
                System.out.println("Unable to run filter for " + feature.getID() + ":" + e1);
                continue;
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    SimpleFeatureType featureType = (SimpleFeatureType) typeBuilder.buildFeatureType();
   
    SimpleFeatureBuilder builder = new SimpleFeatureBuilder(featureType);
   
    GeometryFactory gf = new GeometryFactory();
    delegate = new DefaultFeatureCollection( "test", featureType ){};
   
    double x = -140;
    double y = 45;
    final int features = 5;
    for ( int i = 0; i < features; i++ ) {
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        featureStore = (JDBCFeatureStore) dataStore.getFeatureSource(tname("ft1"));
    }

    public void testAddFeatures() throws IOException {
        SimpleFeatureBuilder b = new SimpleFeatureBuilder(featureStore.getSchema());
        DefaultFeatureCollection collection = new DefaultFeatureCollection(null,
                featureStore.getSchema());
       
        FeatureEventWatcher watcher = new FeatureEventWatcher();
       
        for (int i = 3; i < 6; i++) {
            b.set(aname("intProperty"), new Integer(i));
            b.set(aname("geometry"), new GeometryFactory().createPoint(new Coordinate(i, i)));
            collection.add(b.buildFeature(null));
        }
        featureStore.addFeatureListener( watcher );
        List<FeatureId> fids = featureStore.addFeatures((SimpleFeatureCollection)collection);
        assertEquals( watcher.bounds, collection.getBounds() );
       
        assertEquals(3, fids.size());

        SimpleFeatureCollection features = featureStore.getFeatures();
        assertEquals(6, features.size());
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