// Build location index
private com.google.appengine.api.search.Index getLocationIndex() {
IndexSpec indexSpec =
IndexSpec.newBuilder()
.setName(LOCATION_INDEX)
.setConsistency(Consistency.PER_DOCUMENT)
.build();
return SearchServiceFactory.getSearchService().getIndex(indexSpec);
}
private void procurar(HttpServletRequest req, HttpServletResponse resp) throws IOException {
try {
String search = req.getParameter("q");
String lat = req.getParameter("lat");
String lng = req.getParameter("lng");
String distancia = req.getParameter("distancia");
IndexSpec indexSpec = IndexSpec.newBuilder().setName("produtos").build();
Index index = SearchServiceFactory.getSearchService().getIndex(indexSpec);
String query_string = "";
if (!"".equals(search)) query_string = search + " AND ";
query_string += "distance(posicao, geopoint(" + lat + ", " + lng + ")) < " + distancia;
Results<ScoredDocument> results = index.search(query_string);
boolean first = true;
resp.getWriter().write("[");
for (Iterator iterator = results.iterator(); iterator.hasNext(); ) {
ScoredDocument doc = (ScoredDocument) iterator.next();
if (!first) resp.getWriter().write(", ");
first = false;
boolean first_field = true;
resp.getWriter().write("{");
for (Iterator fields = doc.getFields().iterator(); fields.hasNext(); ) {
if (!first_field) resp.getWriter().write(", ");
first_field = false;
Field field = (Field) fields.next();
if ("posicao".equals(field.getName())) {
resp.getWriter().write("\"latitude\": ");
resp.getWriter().write("\"" + field.getGeoPoint().getLatitude() + "\", ");
resp.getWriter().write("\"longitude\": ");
resp.getWriter().write("\"" + field.getGeoPoint().getLongitude() + "\"");
} else {
resp.getWriter().write("\"" + field.getName() + "\": ");
resp.getWriter().write("\"" + field.getText() + "\"");
}
}
resp.getWriter().write("}");
}
resp.getWriter().write("]");
} catch (SearchException e) {
// handle exception...
}
}
/**
* Shortcut notation to easily get an index from the search service.
*
* <pre><code>
* def index = search.index("books")
* </code></pre>
*
* @param search the search service
* @param indexName the name of the index
* @return an index
*/
public static Index index(SearchService search, String indexName) {
return search.getIndex(IndexSpec.newBuilder().setName(indexName).build());
}
/** Extension point allowing the Index implementation to be modified */
protected Index getIndex() {
SearchService searchService = SearchServiceFactory.getSearchService();
return searchService.getIndex(IndexSpec.newBuilder().setName(indexName));
}