ArcGIS REST Feature Service

 

Example of using an ArcGIS REST Feature Service with a Tile strategy.

This example loads new features from ArcGIS REST Feature Service when the view extent changes.

<!DOCTYPE html>
<html>
  <head>
    <title>ArcGIS REST Feature Service</title>
    <link rel="stylesheet" href="https://openlayers.org/en/v4.6.4/css/ol.css" type="text/css">
    <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
    <script src="https://openlayers.org/en/v4.6.4/build/ol.js"></script>
    <script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>
  </head>
  <body>
    <div id="map" class="map"></div>
    <div id="info">&nbsp;</div>
    <script>
      var serviceUrl = 'https://sampleserver3.arcgisonline.com/ArcGIS/rest/services/' +
          'Petroleum/KSFields/FeatureServer/';
      var layer = '0';

      var esrijsonFormat = new ol.format.EsriJSON();

      var styleCache = {
        'ABANDONED': new ol.style.Style({
          fill: new ol.style.Fill({
            color: 'rgba(225, 225, 225, 255)'
          }),
          stroke: new ol.style.Stroke({
            color: 'rgba(0, 0, 0, 255)',
            width: 0.4
          })
        }),
        'GAS': new ol.style.Style({
          fill: new ol.style.Fill({
            color: 'rgba(255, 0, 0, 255)'
          }),
          stroke: new ol.style.Stroke({
            color: 'rgba(110, 110, 110, 255)',
            width: 0.4
          })
        }),
        'OIL': new ol.style.Style({
          fill: new ol.style.Fill({
            color: 'rgba(56, 168, 0, 255)'
          }),
          stroke: new ol.style.Stroke({
            color: 'rgba(110, 110, 110, 255)',
            width: 0
          })
        }),
        'OILGAS': new ol.style.Style({
          fill: new ol.style.Fill({
            color: 'rgba(168, 112, 0, 255)'
          }),
          stroke: new ol.style.Stroke({
            color: 'rgba(110, 110, 110, 255)',
            width: 0.4
          })
        })
      };

      var vectorSource = new ol.source.Vector({
        loader: function(extent, resolution, projection) {
          var url = serviceUrl + layer + '/query/?f=json&' +
              'returnGeometry=true&spatialRel=esriSpatialRelIntersects&geometry=' +
              encodeURIComponent('{"xmin":' + extent[0] + ',"ymin":' +
                  extent[1] + ',"xmax":' + extent[2] + ',"ymax":' + extent[3] +
                  ',"spatialReference":{"wkid":102100}}') +
              '&geometryType=esriGeometryEnvelope&inSR=102100&outFields=*' +
              '&outSR=102100';
          $.ajax({url: url, dataType: 'jsonp', success: function(response) {
            if (response.error) {
              alert(response.error.message + '\n' +
                  response.error.details.join('\n'));
            } else {
              // dataProjection will be read from document
              var features = esrijsonFormat.readFeatures(response, {
                featureProjection: projection
              });
              if (features.length > 0) {
                vectorSource.addFeatures(features);
              }
            }
          }});
        },
        strategy: ol.loadingstrategy.tile(ol.tilegrid.createXYZ({
          tileSize: 512
        }))
      });

      var vector = new ol.layer.Vector({
        source: vectorSource,
        style: function(feature) {
          var classify = feature.get('activeprod');
          return styleCache[classify];
        }
      });

      var raster = new ol.layer.Tile({
        source: new ol.source.XYZ({
          attributions: 'Tiles © <a href="https://services.arcgisonline.com/ArcGIS/' +
              'rest/services/World_Topo_Map/MapServer">ArcGIS</a>',
          url: 'https://server.arcgisonline.com/ArcGIS/rest/services/' +
              'World_Topo_Map/MapServer/tile/{z}/{y}/{x}'
        })
      });

      var map = new ol.Map({
        layers: [raster, vector],
        target: document.getElementById('map'),
        view: new ol.View({
          center: ol.proj.transform([-97.6114, 38.8403], 'EPSG:4326', 'EPSG:3857'),
          zoom: 7
        })
      });

      var displayFeatureInfo = function(pixel) {
        var features = [];
        map.forEachFeatureAtPixel(pixel, function(feature) {
          features.push(feature);
        });
        if (features.length > 0) {
          var info = [];
          var i, ii;
          for (i = 0, ii = features.length; i < ii; ++i) {
            info.push(features[i].get('field_name'));
          }
          document.getElementById('info').innerHTML = info.join(', ') || '(unknown)';
          map.getTarget().style.cursor = 'pointer';
        } else {
          document.getElementById('info').innerHTML = '&nbsp;';
          map.getTarget().style.cursor = '';
        }
      };

      map.on('pointermove', function(evt) {
        if (evt.dragging) {
          return;
        }
        var pixel = map.getEventPixel(evt.originalEvent);
        displayFeatureInfo(pixel);
      });

      map.on('click', function(evt) {
        displayFeatureInfo(evt.pixel);
      });
    </script>
  </body>
</html>