MDEV-11042 Implement GeoJSON functions.

        Typenames made into proper character case.

mysql-test/r/gis-json.result

 select st_asgeojson(geomfromtext('POINT(1 1)'));
 st_asgeojson(geomfromtext('POINT(1 1)'))
-{"type": "POINT", "coordinates": [1, 1]}
+{"type": "Point", "coordinates": [1, 1]}
 select st_asgeojson(geomfromtext('LINESTRING(10 10,20 10,20 20,10 20,10 10)'));
 st_asgeojson(geomfromtext('LINESTRING(10 10,20 10,20 20,10 20,10 10)'))
-{"type": "LINESTRING", "coordinates": [[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]}
+{"type": "LineString", "coordinates": [[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]}
 select st_asgeojson(geomfromtext('POLYGON((10 10,20 10,20 20,10 20,10 10))'));
 st_asgeojson(geomfromtext('POLYGON((10 10,20 10,20 20,10 20,10 10))'))
-{"type": "POLYGON", "coordinates": [[[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]]}
+{"type": "Polygon", "coordinates": [[[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]]}
 select st_asgeojson(geomfromtext('MULTIPOLYGON(((10 10,20 10,20 20,10 20,10 10)))'));
 st_asgeojson(geomfromtext('MULTIPOLYGON(((10 10,20 10,20 20,10 20,10 10)))'))
-{"type": "MULTIPOLYGON", "coordinates": [[[[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]]]}
+{"type": "MultiPolygon", "coordinates": [[[[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]]]}
 select st_asgeojson(geomfromtext('multilinestring((10 10,20 10,20 20,10 20,10 10))'));
 st_asgeojson(geomfromtext('multilinestring((10 10,20 10,20 20,10 20,10 10))'))
-{"type": "MULTILINESTRING", "coordinates": [[[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]]}
+{"type": "MultiLineString", "coordinates": [[[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]]}
 select st_asgeojson(geomfromtext('multipoint(10 10,20 10,20 20,10 20,10 10)'));
 st_asgeojson(geomfromtext('multipoint(10 10,20 10,20 20,10 20,10 10)'))
-{"type": "MULTIPOINT", "coordinates": [[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]}
+{"type": "MultiPoint", "coordinates": [[10, 10], [20, 10], [20, 20], [10, 20], [10, 10]]}
 select st_asgeojson(st_geomfromtext('GEOMETRYCOLLECTION(POINT(100 0),LINESTRING(101 0,102 1))'));
 st_asgeojson(st_geomfromtext('GEOMETRYCOLLECTION(POINT(100 0),LINESTRING(101 0,102 1))'))
-{"type": "GEOMETRYCOLLECTION", "geometries": [{"type": "POINT", "coordinates": [100, 0]}, {"type": "LINESTRING", "coordinates": [[101, 0], [102, 1]]}]}
+{"type": "GeometryCollection", "geometries": [{"type": "Point", "coordinates": [100, 0]}, {"type": "LineString", "coordinates": [[101, 0], [102, 1]]}]}
 SELECT st_astext(st_geomfromgeojson('{"type":"point","coordinates":[1,2]}'));
 st_astext(st_geomfromgeojson('{"type":"point","coordinates":[1,2]}'))
 POINT(1 2)

sql/spatial.cc

@@ -58,12 +58,14 @@ Geometry::Class_info *Geometry::ci_collection[Geometry::wkb_last+1]=
 static Geometry::Class_info **ci_collection_end=
                                 Geometry::ci_collection+Geometry::wkb_last + 1;
 
-Geometry::Class_info::Class_info(const char *name, int type_id,
-                                 create_geom_t create_func):
+Geometry::Class_info::Class_info(const char *name, const char *geojson_name,
+                                 int type_id, create_geom_t create_func):
   m_type_id(type_id), m_create_func(create_func)
 {
   m_name.str= (char *) name;
   m_name.length= strlen(name);
+  m_geojson_name.str= (char *) geojson_name;
+  m_geojson_name.length= strlen(geojson_name);
 
   ci_collection[type_id]= this;
 }
@@ -105,26 +107,27 @@ static Geometry *create_geometrycollection(char *buffer)
 
 
 
-static Geometry::Class_info point_class("POINT",
+static Geometry::Class_info point_class("POINT", "Point",
 					Geometry::wkb_point, create_point);
 
-static Geometry::Class_info linestring_class("LINESTRING",
+static Geometry::Class_info linestring_class("LINESTRING", "LineString",
 					     Geometry::wkb_linestring,
 					     create_linestring);
-static Geometry::Class_info polygon_class("POLYGON",
+static Geometry::Class_info polygon_class("POLYGON", "Polygon",
 					      Geometry::wkb_polygon,
 					      create_polygon);
-static Geometry::Class_info multipoint_class("MULTIPOINT",
+static Geometry::Class_info multipoint_class("MULTIPOINT", "MultiPoint",
 						 Geometry::wkb_multipoint,
 						 create_multipoint);
 static Geometry::Class_info 
-multilinestring_class("MULTILINESTRING",
+multilinestring_class("MULTILINESTRING", "MultiLineString",
 		      Geometry::wkb_multilinestring, create_multilinestring);
-static Geometry::Class_info multipolygon_class("MULTIPOLYGON",
+static Geometry::Class_info multipolygon_class("MULTIPOLYGON", "MultiPolygon",
 						   Geometry::wkb_multipolygon,
 						   create_multipolygon);
 static Geometry::Class_info 
-geometrycollection_class("GEOMETRYCOLLECTION",Geometry::wkb_geometrycollection,
+geometrycollection_class("GEOMETRYCOLLECTION", "GeometryCollection",
+                         Geometry::wkb_geometrycollection,
 			 create_geometrycollection);
 
 static void get_point(double *x, double *y, const char *data)
@@ -251,14 +254,14 @@ static const int feature_coll_type_len= 17;
 
 int Geometry::as_json(String *wkt, uint max_dec_digits, const char **end)
 {
-  uint32 len= (uint) get_class_info()->m_name.length;
+  uint32 len= (uint) get_class_info()->m_geojson_name.length;
   if (wkt->reserve(4 + type_keyname_len + 2 + len + 2 + 2 +
                    coord_keyname_len + 4, 512))
     return 1;
   wkt->qs_append("{\"", 2);
   wkt->qs_append((const char *) type_keyname, type_keyname_len);
   wkt->qs_append("\": \"", 4);
-  wkt->qs_append(get_class_info()->m_name.str, len);
+  wkt->qs_append(get_class_info()->m_geojson_name.str, len);
   wkt->qs_append("\", \"", 4);
   if (get_class_info() == &geometrycollection_class)
     wkt->qs_append((const char *) geometries_keyname, geometries_keyname_len);

sql/spatial.h

@@ -265,9 +265,11 @@ class Geometry
   {
   public:
     LEX_STRING m_name;
+    LEX_STRING m_geojson_name;
     int m_type_id;
     create_geom_t m_create_func;
-    Class_info(const char *name, int type_id, create_geom_t create_func);
+    Class_info(const char *name, const char *gejson_name,
+               int type_id, create_geom_t create_func);
   };
 
   virtual const Class_info *get_class_info() const=0;