org.postgis.Polygon Java Examples

@Test
public void testBulkWithinPolygon() throws SQLException {
    LinearRing linearRing1 = new LinearRing("0 0, 1 1, 1 2, 1 1, 0 0");
    Polygon polygon1 = new Polygon(new LinearRing[]{linearRing1});
    LinearRing linearRing2 = new LinearRing("1 1, 1 1, 1 2, 1 1, 1 1");
    Polygon polygon2 = new Polygon(new LinearRing[]{linearRing2});
    LinearRing linearRing3 = new LinearRing("2 2, 1 1, 1 2, 1 1, 2 2");
    Polygon polygon3 = new Polygon(new LinearRing[]{linearRing3});
    LinearRing linearRing4 = new LinearRing("1 3, 1 2, 2 2, 1 1, 1 3");
    Polygon polygon4 = new Polygon(new LinearRing[]{linearRing4});

    Vertex v1 = this.sqlgGraph.addVertex(T.label, "Gis", "polygon", polygon1);
    Vertex v2 = this.sqlgGraph.addVertex(T.label, "Gis", "polygon", polygon2);
    Vertex v3 = this.sqlgGraph.addVertex(T.label, "Gis", "polygon", polygon3);
    Vertex v4 = this.sqlgGraph.addVertex(T.label, "Gis", "polygon", polygon4);
    this.sqlgGraph.tx().commit();
    List<Vertex> vertices = this.sqlgGraph.traversal().V().hasLabel("Gis").has("polygon", P.within(polygon1, polygon3, polygon4)).toList();
    Assert.assertEquals(3, vertices.size());
    Assert.assertTrue(Arrays.asList(v1, v3, v4).containsAll(vertices));
}
 

@Override
public GeometryObject getMultiPolygon(Object geomObj) throws SQLException {
	GeometryObject multiPolygon = null;

	if (geomObj instanceof PGgeometry) {
		Geometry geometry = ((PGgeometry)geomObj).getGeometry();
		if (geometry.getType() == Geometry.MULTIPOLYGON) {
			multiPolygon = getMultiPolygon((MultiPolygon)geometry);
		}

		else if (geometry.getType() == Geometry.POLYGON) {
			Polygon polygonObj = (Polygon)geometry;
			double[][] coordinates = getPolygonCoordinates(polygonObj);
			int[] exteriorRings = new int[]{ 0 };

			multiPolygon = GeometryObject.createMultiPolygon(coordinates, exteriorRings, polygonObj.getDimension(), polygonObj.getSrid());
		}
	}

	return multiPolygon;
}
 

@Override
public GeometryObject getGeometry(Object geomObj) throws SQLException {
	if (geomObj instanceof PGgeometry) {
		Geometry geometry = ((PGgeometry)geomObj).getGeometry();
		switch (geometry.getType()) {
		case Geometry.POINT:
			return getPoint((Point)geometry);
		case Geometry.MULTIPOINT:
			return getMultiPoint((MultiPoint)geometry);
		case Geometry.LINESTRING:
			return getCurve((LineString)geometry);
		case Geometry.MULTILINESTRING:
			return getMultiCurve((MultiLineString)geometry);
		case Geometry.POLYGON:
			return getPolygon((Polygon)geometry);
		case Geometry.MULTIPOLYGON:
			return getMultiPolygon((MultiPolygon)geometry);
		default:
			throw new SQLException("Cannot convert PostGIS geometry type '" + geometry.getType() + "' to internal representation: Unsupported type.");
		}
	}

	return null;
}
 

@Before
public void before() {
    table = "test_polygon";

    Point[] points = new Point[5];
    points[0] = new Point(123.45d, 23.45d);
    points[1] = new Point(124.45d, 23.45d);
    points[2] = new Point(124.45d, 24.45d);
    points[3] = new Point(123.45d, 24.45d);
    points[4] = new Point(123.45d, 23.45d);
    LinearRing linearRing = new LinearRing(points);
    t = new Polygon(new LinearRing[]{linearRing});
    t.setSrid(SRID);
}
 

public GeographyPolygon(Polygon polygon) {
    this.srid = polygon.srid;
    this.haveMeasure = polygon.haveMeasure;
    this.dimension = polygon.dimension;
    this.subgeoms = new Geometry[polygon.numGeoms()];
    for (int i = 0 ; i < polygon.numGeoms(); i++) {
        subgeoms[i] = polygon.getSubGeometry(i);
    }
}
 

@Override
public GeometryObject getPolygon(Object geomObj) throws SQLException {
	GeometryObject polygon = null;

	if (geomObj instanceof PGgeometry) {
		Geometry geometry = ((PGgeometry)geomObj).getGeometry();
		if (geometry.getType() != Geometry.POLYGON)
			return null;

		polygon = getPolygon((Polygon)geometry);
	}

	return polygon;
}
 

@Override
protected TypeHandler<Polygon> getTypeHandler() {
    return TYPE_HANDLER;
}
 

private GeometryObject getPolygon(Polygon polygon) {
	return GeometryObject.createPolygon(getPolygonCoordinates(polygon), polygon.getDimension(), polygon.getSrid());
}