public void writeRegionKeys(DS.CacheWriter cw, BoundingBox bb) {
JSONObject json = new JSONObject();
JSONArray jarray = new JSONArray();
json.put("keys", jarray);
for (Map.Entry<BoundingBox, List<Pair<BoundingBox, Key>>> entry : boxList.entrySet()) {
if (bb.isIntersecting(entry.getKey())) {
for (Pair<BoundingBox, Key> pair : entry.getValue()) {
if (bb.isIntersecting(pair.getFirst())) {
jarray.put(KeyFactory.keyToString(pair.getSecond()));
}
}
}
}
for (Pair<GeoPt, Key> pair : locationList) {
if (bb.isInside(pair.getFirst())) {
jarray.put(KeyFactory.keyToString(pair.getSecond()));
}
}
if (firstPlacemarkKey != null && bb.isIntersecting(placemarkBoundingBox)) {
jarray.put(KeyFactory.keyToString(firstPlacemarkKey));
}
json.write(cw);
cw.cache();
}
public GeoData(DS ds) {
Iterable<Entity> tracksIterable = ds.fetchTracks();
Iterable<Entity> imageLocationsIterable = ds.fetchImageLocations();
Iterable<Entity> blogLocationsIterable = ds.fetchBlogLocations();
boxList = new HashMapList<>();
Date lastBegin = null;
for (Entity track : tracksIterable) {
BoundingBox bbTrack = new BoundingBox(track);
for (Entity trackSeq : ds.fetchTrackSeqs(track.getKey())) {
BoundingBox bbTrackSeq = new BoundingBox(trackSeq);
boxList.add(bbTrack, new Pair<BoundingBox, Key>(bbTrackSeq, trackSeq.getKey()));
Date begin = (Date) trackSeq.getProperty(BeginProperty);
if (lastBegin == null || lastBegin.before(begin)) {
lastBegin = begin;
}
}
}
Iterable<Entity> placemarksIterable;
if (lastBegin != null) {
placemarksIterable = ds.fetchPlacemarks(lastBegin);
} else {
placemarksIterable = ds.fetchPlacemarks();
}
firstPlacemarkKey = null;
placemarkBoundingBox = new BoundingBox();
for (Entity placemark : placemarksIterable) {
if (firstPlacemarkKey == null) {
firstPlacemarkKey = placemark.getKey();
}
GeoPt location = (GeoPt) placemark.getProperty(LocationProperty);
placemarkBoundingBox.add(location);
}
locationList = new ArrayList<>();
for (Entity metadata : imageLocationsIterable) {
GeoPt location = (GeoPt) metadata.getProperty(LocationProperty);
if (location != null) {
locationList.add(new Pair<>(location, metadata.getKey()));
}
}
for (Entity blog : blogLocationsIterable) {
GeoPt location = (GeoPt) blog.getProperty(LocationProperty);
if (location != null) {
locationList.add(new Pair<>(location, blog.getKey()));
}
}
}