why do I keep getting error: Cannot read property 'FindTypeNodeFromPath' of null ??

[Former Member]

Hi guys,

I'm using visual sap.ui.vbm.VBI.

I'm just trying to visualize a train on a map:

config.json file:

{
   "SAPVB": {
      "version": "2.0",
      "Config": {
         "Set": {
            "P": [{
               "name": "traceAllowed",
               "value": ""
            }, {
               "name": "language",
               "value": "EN"
            }]
         }
      },


      "Windows": {
         "Set": {
            "Window": {
               "id": "Main",
               "caption": "MainWindow",
               "type": "geo",
               "refParent": "",
               "refScene": "MainScene",
               "modal": "true"
            }
         }
      },
      "Scenes": {
         "Set": {
            "SceneGeo": {
               "id": "MainScene",
               "refMapLayerStack": "DEFAULT",
               "initialZoom": "7.5",
               "initialStartPosition": "144.542248;-20.332721;0",
               "VO": [{
                  "id": "Spot",
                  "type": "{00100000-2012-0004-B001-64592B8DB964}",
                  "datasource": "Spots",
                  "pos.bind": "Spots.GeoPosition"
               }]
            }
         }
      },


      "MapLayerStacks": {
         "Set": {
            "MapLayerStack": {
               "name": "DEFAULT",
               "MapLayer": {
                  "name": "MAPQUEST",
                  "refMapProvider": "MAPQUEST",
                  "opacity": "1.0E0",
                  "colBkgnd": "RGB(255,255,255)"
               }
            }
         }
      },


      "MapProviders": {
         "Set": {
            "MapProvider": {
               "name": "MAPQUEST",
               "tileX": "256",
               "tileY": "256",
               "maxLOD": "19",
               "copyright": "Tiles Courtesy of MapQuest © OpenStreetMap under ODbL v1.0 ",
               "Source": [{
                  "id": "s1",
                  "url": "http://services.arcgisonline.com/arcgis/rest/services/World_Street_Map/MapServer/tile/{LOD}/{Y}/{X}"
               }]
            }
         }
      },


      "DataTypes:": {
         "Set": {
            "N": [{
               "name": "Spots",
               "key": "Key",
               "A": [{
                  "changeable": "true",
                  "name": "Key",
                  "alias": "K",
                  "type": "string"
               }, {
                  "changeable": "true",
                  "name": "GeoPosition",
                  "alias": "P",
                  "type": "vector"
               }]
            }]
         }
      },
      "Data": {
         "Set": {
            "N": [{
               "name": "Spots",
               "E": [{
                  "VB:c": "true",
                  "P": "146.828570;-19.260971;0",
                  "K": "t1=="
               }]
            }]
         }
      }
   }
}

my controller:

	onInit: function() {
		var that = this;

		this.map = sap.ui.getCore().byId('map');
		$.getJSON("model/config.json", function(conf) {
			that.map.load(conf);
		});
	}

I don't know what's going wrong. Can anyone help?

[former_member193368 · Accepted solution]

Hello Aaron,

I checked your code, and found out, that there is a small typo in line 71:

"DataTypes:": { 

The double collon within the string has to be removed, then your example worked. At least I was able to see a map in our test environment.

I guess there is room for improvement in respect to the error messages, which were hardly useful in this case. We may take a look.

Best regards, Juergen

[Former Member · Accepted solution]

Thanks, Juergen!