GeoJSON format back up to spec with draft 4. (See #1028)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4770 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/GeoJSON.js

@@ -93,9 +93,9 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
                     break;
                 case "GeometryCollection":
                     results = [];
-                    for(var i=0; i<obj.members.length; ++i) {
+                    for(var i=0; i<obj.geometries.length; ++i) {
                         try {
-                            results.push(this.parseGeometry(obj.members[i]));
+                            results.push(this.parseGeometry(obj.geometries[i]));
                         } catch(err) {
                             results = null;
                             OpenLayers.Console.error(err);
@@ -115,9 +115,9 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
                             }
                             break;
                         case "FeatureCollection":
-                            for(var i=0; i<obj.members.length; ++i) {
+                            for(var i=0; i<obj.features.length; ++i) {
                                 try {
-                                    results.push(this.parseFeature(obj.members[i]));
+                                    results.push(this.parseFeature(obj.features[i]));
                                 } catch(err) {
                                     results = null;
                                     OpenLayers.Console.error(err);
@@ -125,9 +125,9 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
                             }
                             break;
                         case "GeometryCollection":
-                            for(var i=0; i<obj.members.length; ++i) {
+                            for(var i=0; i<obj.geometries.length; ++i) {
                                 try {
-                                    var geom = this.parseGeometry(obj.members[i]);
+                                    var geom = this.parseGeometry(obj.geometries[i]);
                                     results.push(new OpenLayers.Feature.Vector(geom));
                                 } catch(err) {
                                     results = null;
@@ -436,28 +436,24 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
             "type": null
         };
         if(obj instanceof Array) {
-            geojson.members = [];
+            if(obj[0] instanceof OpenLayers.Feature.Vector) {
+                geojson.features = [];
+            } else if (obj[0].CLASS_NAME.search("OpenLayers.Geometry") == 0) {
+                geojson.geometries = [];
+            }    
             for(var i=0; i<obj.length; ++i) {
                 var element = obj[i];
                 if(element instanceof OpenLayers.Feature.Vector) {
                     if(geojson.type == null) {
                         geojson.type = "FeatureCollection";
                         if(element.layer && element.layer.projection) {
-                            var proj = element.layer.projection;
+                            this.createCRSObject(element);
-                            if(proj.match(/epsg:/i)) {
-                                geojson.crs = {
-                                    "type": "EPSG",
-                                    "properties": {
-                                        "code": parseInt(proj.substring(proj.indexOf(":") + 1))
-                                    }
-                                };
-                            }
                         }
                     } else if(geojson.type != "FeatureCollection") {
                         OpenLayers.Console.error("FeatureCollection only supports collections of features: " + element);
                         break;
                     }
-                    geojson.members.push(this.extract.feature.apply(this, [element]));
+                    geojson.features.push(this.extract.feature.apply(this, [element]));
                 } else if (element.CLASS_NAME.search("OpenLayers.Geometry") == 0) {
                     if(geojson.type == null) {
                         geojson.type = "GeometryCollection";
@@ -465,7 +461,7 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
                         OpenLayers.Console.error("GeometryCollection only supports collections of geometries: " + element);
                         break;
                     }
-                    geojson.members.push(this.extract.geometry.apply(this, [element]));
+                    geojson.geometries.push(this.extract.geometry.apply(this, [element]));
                 }
             }
         } else if (obj.CLASS_NAME.search("OpenLayers.Geometry") == 0) {
@@ -473,21 +469,39 @@ OpenLayers.Format.GeoJSON = OpenLayers.Class(OpenLayers.Format.JSON, {
         } else if (obj instanceof OpenLayers.Feature.Vector) {
             geojson = this.extract.feature.apply(this, [obj]);
             if(obj.layer && obj.layer.projection) {
-                var proj = obj.layer.projection;
+                this.createCRSObject(obj);
-                if(proj.match(/epsg:/i)) {
-                    geojson.crs = {
-                        "type": "EPSG",
-                        "properties": {
-                            "code": parseInt(proj.substring(proj.indexOf(":") + 1))
-                        }
-                    };
-                }
             }
         }
         return OpenLayers.Format.JSON.prototype.write.apply(this,
                                                             [geojson, pretty]);
     },
 
+    /**
+     * Method: createCRSObject
+     * Create the CRS object for an object.
+     */
+    createCRSObject: function(object) {
+       var proj = object.layer.projection;
+       if (proj.match(/epsg:/i)) {
+           var code = parseInt(proj.substring(proj.indexOf(":") + 1));
+           if (code == 4326) {
+               geojson.crs = {
+                   "type": "OGC",
+                   "properties": {
+                       "urn": "urn:ogc:def:crs:OGC:1.3:CRS84"
+                   }
+               };
+           } else {    
+               geojson.crs = {
+                   "type": "EPSG",
+                   "properties": {
+                       "code": code 
+                   }
+               };
+           }    
+       }
+    },
+    
     /**
      * Property: extract
      * Object with properties corresponding to the GeoJSON types.

tests/Format/test_GeoJSON.html

@@ -3,10 +3,10 @@
     <script src="../../lib/OpenLayers.js"></script> 
     <script type="text/javascript">
 
-    var poly_content = '{"type": "FeatureCollection", "members": [{"geometry": {"type": "Polygon", "coordinates": [[[-131.484375, -5.9765625], [-112.5, -58.0078125], [-32.34375, -50.2734375], [-114.609375, 52.3828125], [-167.34375, -35.5078125], [-146.953125, -57.3046875], [-139.921875, -34.1015625], [-131.484375, -5.9765625]]]}, "type": "Feature", "id": 562, "properties": {"strokeColor": "red", "title": "Feature 2", "author": "Your Name Here"}}]}'; 
+    var poly_content = '{"type": "FeatureCollection", "features": [{"geometry": {"type": "Polygon", "coordinates": [[[-131.484375, -5.9765625], [-112.5, -58.0078125], [-32.34375, -50.2734375], [-114.609375, 52.3828125], [-167.34375, -35.5078125], [-146.953125, -57.3046875], [-139.921875, -34.1015625], [-131.484375, -5.9765625]]]}, "type": "Feature", "id": 562, "properties": {"strokeColor": "red", "title": "Feature 2", "author": "Your Name Here"}}]}'; 
     var point_feature = '{"geometry": {"type": "Point", "coordinates": [94.21875, 72.94921875]}, "type": "Feature", "id": 573, "properties": {"strokeColor": "blue", "title": "Feature 5", "author": "Your Name Here"}}'
-    var line_feature = '{"type": "FeatureCollection", "members": [{"geometry": {"type": "LineString", "coordinates": [[-27.0703125, 59.4140625], [-77.6953125, 20.7421875], [30.5859375, -36.2109375], [67.1484375, 34.8046875]]}, "type": "Feature", "id": 559, "properties": {"strokeColor": "red", "title": "Feature 1", "author": "Your Name Here"}}]}';
+    var line_feature = '{"type": "FeatureCollection", "features": [{"geometry": {"type": "LineString", "coordinates": [[-27.0703125, 59.4140625], [-77.6953125, 20.7421875], [30.5859375, -36.2109375], [67.1484375, 34.8046875]]}, "type": "Feature", "id": 559, "properties": {"strokeColor": "red", "title": "Feature 1", "author": "Your Name Here"}}]}';
-    var multiple_features = '{"type": "FeatureCollection", "members": [{"geometry": {"type": "Point", "coordinates": [-91.0546875, 43.9453125]}, "type": "Feature", "id": 577, "properties": {"strokeColor": "red", "title": "Feature 2", "image": "foo.gif", "author": "Your Name Here"}}, {"geometry": {"type": "LineString", "coordinates": [[91.40625, -1.40625], [116.015625, -42.890625], [153.28125, -28.125], [108.984375, 11.25], [75.234375, 8.4375], [76.640625, 9.140625], [67.5, -36.5625], [67.5, -35.859375]]}, "type": "Feature", "id": 576, "properties": {"strokeColor": "red", "title": "Feature 1", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [139.5703125, 57.48046875]}, "type": "Feature", "id": 575, "properties": {"strokeColor": "blue", "title": "Feature 7", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [107.2265625, 82.44140625]}, "type": "Feature", "id": 574, "properties": {"strokeColor": "blue", "title": "Feature 6", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [94.21875, 72.94921875]}, "type": "Feature", "id": 573, "properties": {"strokeColor": "blue", "title": "Feature 5", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [116.3671875, 61.69921875]}, "type": "Feature", "id": 572, "properties": {"strokeColor": "blue", "title": "Feature 4", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [145.8984375, 73.65234375]}, "type": "Feature", "id": 571, "properties": {"strokeColor": "blue", "title": "Feature 3", "author": "Your Name Here"}}, {"geometry": {"type": "Polygon", "coordinates": [[[32.34375, 52.20703125], [87.1875, 70.13671875], [122.6953125, 37.44140625], [75.234375, 42.36328125], [40.078125, 42.36328125], [28.828125, 48.33984375], [18.6328125, 56.77734375], [23.203125, 65.56640625], [32.34375, 52.20703125]]]}, "type": "Feature", "id": 570, "properties": {"strokeColor": "blue", "title": "Feature 2", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [62.578125, -53.4375]}, "type": "Feature", "id": 569, "properties": {"strokeColor": "red", "title": "Feature 3", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [121.640625, 16.875]}, "type": "Feature", "id": 568, "properties": {"strokeColor": "red", "title": "Feature 6", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [135.703125, 8.4375]}, "type": "Feature", "id": 567, "properties": {"strokeColor": "red", "title": "Feature 4", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [137.109375, 48.515625]}, "type": "Feature", "id": 566, "properties": {"strokeColor": "red", "title": "Feature 274", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [0, 5]}, "type": "Feature", "id": 565, "properties": {}}, {"geometry": {"type": "Point", "coordinates": [0, 5]}, "type": "Feature", "id": 564, "properties": {}}, {"geometry": {"type": "Point", "coordinates": [0, 5]}, "type": "Feature", "id": 563, "properties": {}}, {"geometry": {"type": "Polygon", "coordinates": [[[-131.484375, -5.9765625], [-112.5, -58.0078125], [-32.34375, -50.2734375], [-114.609375, 52.3828125], [-167.34375, -35.5078125], [-146.953125, -57.3046875], [-139.921875, -34.1015625], [-131.484375, -5.9765625]]]}, "type": "Feature", "id": 562, "properties": {"strokeColor": "red", "title": "Feature 2", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [48.8671875, -15.8203125]}, "type": "Feature", "id": 560, "properties": {"strokeColor": "red", "title": "Feature 2", "author": "Your Name Here"}}, {"geometry": {"type": "LineString", "coordinates": [[-27.0703125, 59.4140625], [-77.6953125, 20.7421875], [30.5859375, -36.2109375], [67.1484375, 34.8046875]]}, "type": "Feature", "id": 559, "properties": {"strokeColor": "red", "title": "Feature 1", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [12.65625, 16.5234375]}, "type": "Feature", "id": 558, "properties": {"styleUrl": "#allstyle", "title": "Feature 1", "strokeColor": "red", "author": "Your Name Here"}}]}';
+    var multiple_features = '{"type": "FeatureCollection", "features": [{"geometry": {"type": "Point", "coordinates": [-91.0546875, 43.9453125]}, "type": "Feature", "id": 577, "properties": {"strokeColor": "red", "title": "Feature 2", "image": "foo.gif", "author": "Your Name Here"}}, {"geometry": {"type": "LineString", "coordinates": [[91.40625, -1.40625], [116.015625, -42.890625], [153.28125, -28.125], [108.984375, 11.25], [75.234375, 8.4375], [76.640625, 9.140625], [67.5, -36.5625], [67.5, -35.859375]]}, "type": "Feature", "id": 576, "properties": {"strokeColor": "red", "title": "Feature 1", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [139.5703125, 57.48046875]}, "type": "Feature", "id": 575, "properties": {"strokeColor": "blue", "title": "Feature 7", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [107.2265625, 82.44140625]}, "type": "Feature", "id": 574, "properties": {"strokeColor": "blue", "title": "Feature 6", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [94.21875, 72.94921875]}, "type": "Feature", "id": 573, "properties": {"strokeColor": "blue", "title": "Feature 5", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [116.3671875, 61.69921875]}, "type": "Feature", "id": 572, "properties": {"strokeColor": "blue", "title": "Feature 4", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [145.8984375, 73.65234375]}, "type": "Feature", "id": 571, "properties": {"strokeColor": "blue", "title": "Feature 3", "author": "Your Name Here"}}, {"geometry": {"type": "Polygon", "coordinates": [[[32.34375, 52.20703125], [87.1875, 70.13671875], [122.6953125, 37.44140625], [75.234375, 42.36328125], [40.078125, 42.36328125], [28.828125, 48.33984375], [18.6328125, 56.77734375], [23.203125, 65.56640625], [32.34375, 52.20703125]]]}, "type": "Feature", "id": 570, "properties": {"strokeColor": "blue", "title": "Feature 2", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [62.578125, -53.4375]}, "type": "Feature", "id": 569, "properties": {"strokeColor": "red", "title": "Feature 3", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [121.640625, 16.875]}, "type": "Feature", "id": 568, "properties": {"strokeColor": "red", "title": "Feature 6", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [135.703125, 8.4375]}, "type": "Feature", "id": 567, "properties": {"strokeColor": "red", "title": "Feature 4", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [137.109375, 48.515625]}, "type": "Feature", "id": 566, "properties": {"strokeColor": "red", "title": "Feature 274", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [0, 5]}, "type": "Feature", "id": 565, "properties": {}}, {"geometry": {"type": "Point", "coordinates": [0, 5]}, "type": "Feature", "id": 564, "properties": {}}, {"geometry": {"type": "Point", "coordinates": [0, 5]}, "type": "Feature", "id": 563, "properties": {}}, {"geometry": {"type": "Polygon", "coordinates": [[[-131.484375, -5.9765625], [-112.5, -58.0078125], [-32.34375, -50.2734375], [-114.609375, 52.3828125], [-167.34375, -35.5078125], [-146.953125, -57.3046875], [-139.921875, -34.1015625], [-131.484375, -5.9765625]]]}, "type": "Feature", "id": 562, "properties": {"strokeColor": "red", "title": "Feature 2", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [48.8671875, -15.8203125]}, "type": "Feature", "id": 560, "properties": {"strokeColor": "red", "title": "Feature 2", "author": "Your Name Here"}}, {"geometry": {"type": "LineString", "coordinates": [[-27.0703125, 59.4140625], [-77.6953125, 20.7421875], [30.5859375, -36.2109375], [67.1484375, 34.8046875]]}, "type": "Feature", "id": 559, "properties": {"strokeColor": "red", "title": "Feature 1", "author": "Your Name Here"}}, {"geometry": {"type": "Point", "coordinates": [12.65625, 16.5234375]}, "type": "Feature", "id": 558, "properties": {"styleUrl": "#allstyle", "title": "Feature 1", "strokeColor": "red", "author": "Your Name Here"}}]}';
     var parser = new OpenLayers.Format.GeoJSON();
 
     function test_Format_GeoJSON_constructor(t) { 
@@ -145,7 +145,7 @@
 
        var geomcol = {
            "type": "GeometryCollection",
-           "members": [
+           "geometries": [
                {
                    "type": "Point",
                    "coordinates": [100.0, 0.0]
@@ -189,7 +189,7 @@
 
         var line_object = {
             "type": "FeatureCollection", 
-            "members": [
+            "features": [
                 {
                     "geometry": {
                         "type": "LineString", 
@@ -212,7 +212,7 @@
         };
         data = parser.read(line_object);
         out = parser.write(data);
-        serialized = '{"type":"FeatureCollection","members":[{"type":"Feature","id":559,"properties":{"strokeColor":"red","title":"Feature 1","author":"Your Name Here"},"geometry":{"type":"LineString","coordinates":[[-27.0703125,59.4140625],[-77.6953125,20.7421875],[30.5859375,-36.2109375],[67.1484375,34.8046875]]}}]}';
+        serialized = '{"type":"FeatureCollection","features":[{"type":"Feature","id":559,"properties":{"strokeColor":"red","title":"Feature 1","author":"Your Name Here"},"geometry":{"type":"LineString","coordinates":[[-27.0703125,59.4140625],[-77.6953125,20.7421875],[30.5859375,-36.2109375],[67.1484375,34.8046875]]}}]}';
         t.eq(out, serialized, "input and output on line collections are the same");
         
         var serialize_tests = [
@@ -253,8 +253,8 @@
         serialize_tests.push([multiline, '{"type":"MultiLineString","coordinates":[[[1,2],[3,4]],[[1,2],[3,4]]]}']);
         multipolygon = new OpenLayers.Geometry.MultiPolygon([serialize_tests[4][0],  serialize_tests[4][0]]);
         serialize_tests.push([multipolygon, '{"type":"MultiPolygon","coordinates":[[[[1,2],[3,4],[5,6],[1,2]]],[[[1,2],[3,4],[5,6],[1,2]]]]}']);
-        serialize_tests.push([ [ serialize_tests[0][0] ], '{"type":"FeatureCollection","members":[{"type":"Feature","id":0,"properties":{},"geometry":{"type":"Point","coordinates":[1,2]}}]}' ]);
+        serialize_tests.push([ [ serialize_tests[0][0] ], '{"type":"FeatureCollection","features":[{"type":"Feature","id":0,"properties":{},"geometry":{"type":"Point","coordinates":[1,2]}}]}' ]);
-        serialize_tests.push([ [ serialize_tests[1][0], serialize_tests[2][0] ], '{"type":"GeometryCollection","members":[{"type":"Point","coordinates":[1,2]},{"type":"MultiPoint","coordinates":[[1,2]]}]}' ]);
+        serialize_tests.push([ [ serialize_tests[1][0], serialize_tests[2][0] ], '{"type":"GeometryCollection","geometries":[{"type":"Point","coordinates":[1,2]},{"type":"MultiPoint","coordinates":[[1,2]]}]}' ]);
         for (var i = 0; i < serialize_tests.length; i++) {
             var input = serialize_tests[i][0];
             var output = serialize_tests[i][1];
@@ -268,7 +268,7 @@
 
         var line_object = {
             "type": "FeatureCollection", 
-            "members": [
+            "features": [
                 {
                     "geometry": {
                         "type": "LineString",