gistfile1.txt

      '_spatial': function(node, obj, func) {
        var args = [], container = {};
        this.readChildNodes(node, container);
        if (goog.isDef(container.geometry)) {
          args.push(this.gml_.createGeometry(container));
        } else {
          args = container.bounds;
        }
        if (goog.isDef(container['distance'])) {
          args.push(container['distance']);
        }
        if (goog.isDef(container['distanceUnits'])) {
          args.push(container['distanceUnits']);
        }
        obj['filters'].push(new ol.expr.Call(func, args));
      },
      'BBOX': function(node, obj) {
        var readers = this.readers[this.defaultNamespaceURI];
        readers['_spatial'].call(this, node, obj,
            ol.expr.functions.EXTENT);
      },
      'Intersects': function(node, obj) {
        var readers = this.readers[this.defaultNamespaceURI];
        readers['_spatial'].call(this, node, obj,
            ol.expr.functions.INTERSECTS);
      },

ol.expr.lib[ol.expr.functions.INTERSECTS] = function(geom) {
throw new Error('Spatial function not implemented: ' +
ol.expr.functions.INTERSECTS);
};