Package org.h2gis.functions.io.geojson

Class GJGeometryReader

  • public class GJGeometryReader
extends Object
    This class is used to convert a geojon geometry to a JTS geometry.
    Author:
    Erwan Bocher

    • Constructor Summary

      Constructors 
      Constructor Description
      GJGeometryReader​(org.locationtech.jts.geom.GeometryFactory GF)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      String getGeomType()  
      org.locationtech.jts.geom.Coordinate parseCoordinate​(com.fasterxml.jackson.core.JsonParser jp)
      Parses a GeoJSON coordinate array and returns a JTS coordinate.
      org.locationtech.jts.geom.Coordinate[] parseCoordinates​(com.fasterxml.jackson.core.JsonParser jp)
      Parses a sequence of coordinates array expressed as [ [100.0, 0.0], [101.0, 1.0] ]
      org.locationtech.jts.geom.Geometry parseGeometry​(com.fasterxml.jackson.core.JsonParser jsParser)
      Parses a GeoJSON geometry and returns its JTS representation.
      org.locationtech.jts.geom.GeometryCollection parseGeometryCollection​(com.fasterxml.jackson.core.JsonParser jp)
      Each element in the geometries array of a GeometryCollection is one of the geometry objects described above: { "type": "GeometryCollection", "geometries": [ { "type": "Point", "coordinates": [100.0, 0.0] }, { "type": "LineString", "coordinates": [ [101.0, 0.0], [102.0, 1.0] ] } ]}
      org.locationtech.jts.geom.LineString parseLinestring​(com.fasterxml.jackson.core.JsonParser jp)
      Parse the array of positions.
      org.locationtech.jts.geom.MultiLineString parseMultiLinestring​(com.fasterxml.jackson.core.JsonParser jp)
      Parses an array of positions defined as: { "type": "MultiLineString", "coordinates": [ [ [100.0, 0.0], [101.0, 1.0] ], [ [102.0, 2.0], [103.0, 3.0] ] ] }
      org.locationtech.jts.geom.MultiPoint parseMultiPoint​(com.fasterxml.jackson.core.JsonParser jp)
      Parses an array of positions Syntax: { "type": "MultiPoint", "coordinates": [ [100.0, 0.0], [101.0, 1.0] ] }
      org.locationtech.jts.geom.MultiPolygon parseMultiPolygon​(com.fasterxml.jackson.core.JsonParser jp)
      Coordinates of a MultiPolygon are an array of Polygon coordinate arrays: { "type": "MultiPolygon", "coordinates": [ [[[102.0, 2.0], [103.0, 2.0], [103.0, 3.0], [102.0, 3.0], [102.0, 2.0]]], [[[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]], [[100.2, 0.2], [100.8, 0.2], [100.8, 0.8], [100.2, 0.8], [100.2, 0.2]]] ] }
      org.locationtech.jts.geom.Point parsePoint​(com.fasterxml.jackson.core.JsonParser jp)
      Parses one position Syntax: { "type": "Point", "coordinates": [100.0, 0.0] }
      org.locationtech.jts.geom.Polygon parsePolygon​(com.fasterxml.jackson.core.JsonParser jp)
      Coordinates of a Polygon are an array of LinearRing coordinate arrays.

    • Constructor Detail

      • GJGeometryReader

        public GJGeometryReader​(org.locationtech.jts.geom.GeometryFactory GF)

    • Method Detail

      • parseGeometry

        public org.locationtech.jts.geom.Geometry parseGeometry​(com.fasterxml.jackson.core.JsonParser jsParser)
                                                 throws IOException,
                                                        SQLException
        Parses a GeoJSON geometry and returns its JTS representation. Syntax: "geometry":{"type": "Point", "coordinates": [102.0,0.5]}
        Parameters:
        jsParser - JsonParser
        Returns:
        Geometry
        Throws:
        IOException
        SQLException

      • parsePoint

        public org.locationtech.jts.geom.Point parsePoint​(com.fasterxml.jackson.core.JsonParser jp)
                                           throws IOException,
                                                  SQLException
        Parses one position Syntax: { "type": "Point", "coordinates": [100.0, 0.0] }
        Parameters:
        jp - JsonParser
        Returns:
        Point
        Throws:
        IOException
        SQLException

      • parseMultiPoint

        public org.locationtech.jts.geom.MultiPoint parseMultiPoint​(com.fasterxml.jackson.core.JsonParser jp)
                                                     throws IOException,
                                                            SQLException
        Parses an array of positions Syntax: { "type": "MultiPoint", "coordinates": [ [100.0, 0.0], [101.0, 1.0] ] }
        Parameters:
        jp - JsonParser
        Returns:
        MultiPoint
        Throws:
        IOException
        SQLException

      • parseLinestring

        public org.locationtech.jts.geom.LineString parseLinestring​(com.fasterxml.jackson.core.JsonParser jp)
                                                     throws IOException,
                                                            SQLException
        Parse the array of positions. Syntax: { "type": "LineString", "coordinates": [ [100.0, 0.0], [101.0, 1.0] ] }
        Parameters:
        jp - JsonParser
        Throws:
        IOException
        SQLException

      • parseMultiLinestring

        public org.locationtech.jts.geom.MultiLineString parseMultiLinestring​(com.fasterxml.jackson.core.JsonParser jp)
                                                               throws IOException,
                                                                      SQLException
        Parses an array of positions defined as: { "type": "MultiLineString", "coordinates": [ [ [100.0, 0.0], [101.0, 1.0] ], [ [102.0, 2.0], [103.0, 3.0] ] ] }
        Parameters:
        jp - JsonParser
        Returns:
        MultiLineString
        Throws:
        IOException
        SQLException

      • parsePolygon

        public org.locationtech.jts.geom.Polygon parsePolygon​(com.fasterxml.jackson.core.JsonParser jp)
                                               throws IOException,
                                                      SQLException
        Coordinates of a Polygon are an array of LinearRing coordinate arrays. The first element in the array represents the exterior ring. Any subsequent elements represent interior rings (or holes). Syntax: No holes: { "type": "Polygon", "coordinates": [ [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0] ] ] } With holes: { "type": "Polygon", "coordinates": [ [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0] ], [ [100.2, 0.2], [100.8, 0.2], [100.8, 0.8], [100.2, 0.8], [100.2, 0.2] ] ] }
        Parameters:
        jp - JsonParser
        Returns:
        Polygon
        Throws:
        IOException
        SQLException

      • parseMultiPolygon

        public org.locationtech.jts.geom.MultiPolygon parseMultiPolygon​(com.fasterxml.jackson.core.JsonParser jp)
                                                         throws IOException,
                                                                SQLException
        Coordinates of a MultiPolygon are an array of Polygon coordinate arrays: { "type": "MultiPolygon", "coordinates": [ [[[102.0, 2.0], [103.0, 2.0], [103.0, 3.0], [102.0, 3.0], [102.0, 2.0]]], [[[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]], [[100.2, 0.2], [100.8, 0.2], [100.8, 0.8], [100.2, 0.8], [100.2, 0.2]]] ] }
        Parameters:
        jp - JsonParser
        Returns:
        MultiPolygon
        Throws:
        IOException
        SQLException

      • parseGeometryCollection

        public org.locationtech.jts.geom.GeometryCollection parseGeometryCollection​(com.fasterxml.jackson.core.JsonParser jp)
                                                                     throws IOException,
                                                                            SQLException
        Each element in the geometries array of a GeometryCollection is one of the geometry objects described above: { "type": "GeometryCollection", "geometries": [ { "type": "Point", "coordinates": [100.0, 0.0] }, { "type": "LineString", "coordinates": [ [101.0, 0.0], [102.0, 1.0] ] } ]}
        Parameters:
        jp - JsonParser
        Returns:
        GeometryCollection
        Throws:
        IOException
        SQLException

      • parseCoordinates

        public org.locationtech.jts.geom.Coordinate[] parseCoordinates​(com.fasterxml.jackson.core.JsonParser jp)
                                                        throws IOException
        Parses a sequence of coordinates array expressed as [ [100.0, 0.0], [101.0, 1.0] ]
        Parameters:
        jp - JsonParser
        Returns:
        Coordinate[]
        Throws:
        IOException

      • parseCoordinate

        public org.locationtech.jts.geom.Coordinate parseCoordinate​(com.fasterxml.jackson.core.JsonParser jp)
                                                     throws IOException
        Parses a GeoJSON coordinate array and returns a JTS coordinate. The first token corresponds to the first X value. The last token correponds to the end of the coordinate array "]". Parsed syntax: 100.0, 0.0]
        Parameters:
        jp - JsonParser
        Returns:
        Coordinate
        Throws:
        IOException

      • getGeomType

        public String getGeomType()
        Returns:
        GeoJSON geometry type