pub/ImplabJs: src/djol/VectorStoreQuery.js comparison

comparison src/djol/VectorStoreQuery.js @ 8:f0035923ff3e

добавлена библиотека для работы с openlayers 3+

author	cin
date	Mon, 21 Aug 2017 17:47:00 +0300
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-:9c0943c68a90
+:f0035923ff3e
+define([ "ol" ], function(ol) {
+function buildFilter(filter) {
+if (filter instanceof Function)
+return filter;
+if (filter) {
+var match = function(str) {
+return {
+test : function(x) {
+if (x === null || x === undefined)
+return false;
+return x.toString().startsWith(str);
+}
+};
+};
+for ( var p in filter) {
+if (typeof (filter[p]) == "string" && filter[p].endsWith("*"))
+filter[p] = match(filter[p].substr(0, filter[p].length));
+}
+return function(ft) {
+for ( var p in filter) {
+if (filter[p] && filter[p].test ? !filter[p]
+.test(ft.get(p)) : ft.get(p) != filter[p])
+return false;
+}
+return true;
+};
+}
+throw new Error("Unsupported filter");
+}
+/**
+* @constructor
+* @example
+*
+* <pre>
+* var store = new VectorStore({
+*     source : vectorSource
+* });
+*
+* var req = new VectorStoreQuery({
+*     city : &quot;Moscow&quot;
+* }, [ 30, 50, 40, 60 ]);
+*
+* store.query(req).then(showResults);
+* </pre>
+*/
+return function(filter, extent) {
+var match = filter && buildFilter(filter);
+var query = function(ft) {
+if (extent) {
+var g = gt.getGeometry();
+if (!g || !ol.extent.intersects(extent, g.getExtent()))
+return false;
+}
+return !match || match(ft);
+};
+query.extent = extent;
+query.predicate = match;
+return query;
+};
+});