internal void childRemoved(DataSnapshot dataSnapshot)
{
string key = dataSnapshot.Key;
LocationInfo info = GeoUtils.getMapSafe(key, locationInfos);
if (info != null)
{
ValueChangedListenerSetup vs = new ValueChangedListenerSetup(geoFire.getDatabaseRefForKey(key), true, (s) => {
if (s.DatabaseError == null)
{
lock (Lock) {
GeoLocation location = GeoFire.getLocationValue(dataSnapshot);
GeoHash hash = (location != null) ? new GeoHash(location) : null;
if (hash == null || !geoHashQueriesContainGeoHash(hash))
{
LocationInfo _info = GeoUtils.getMapSafe(key, locationInfos);
locationInfos.Remove(key);
if (_info != null && _info.inGeoQuery)
{
foreach (GeoQueryEventListener listener in eventListeners)
{
geoFire.raiseEvent(() => {
listener.onKeyExited(key);
});
}
}
}
}
}
});
}
}
/**
* Creates a new GeoQuery object centered at the given location and with the given radius.
* @param geoFire The GeoFire object this GeoQuery uses
* @param center The center of this query
* @param radius The radius of this query, in kilometers
*/
internal GeoQuery(GeoFire geoFire, GeoLocation center, double radius)
{
this.geoFire = geoFire;
this.center = center;
// convert from kilometers to meters
this.radius = radius * 1000;
childEventLister = new GeoQueryChildEventListener(this);
}
internal virtual void initializeFirebase()
{
FirebaseApp app = FirebaseApp.DefaultInstance;
app.SetEditorDatabaseUrl(geoFireUrl);
if (app.Options.DatabaseUrl != null)
{
app.SetEditorDatabaseUrl(app.Options.DatabaseUrl);
}
geoFire = new GeoFire(FirebaseDatabase.DefaultInstance.GetReference("/geo"));
}
internal void childChanged(DataSnapshot dataSnapshot)
{
GeoLocation location = GeoFire.getLocationValue(dataSnapshot);
if (location != null)
{
this.updateLocationInfo(dataSnapshot.Key, location);
}
else
{
// throw an error in future?
}
}
public void onDataChange(DataSnapshot dataSnapshot)
{
if (dataSnapshot.Value == null)
{
this.callback.onLocationResult(dataSnapshot.Key, null);
}
else
{
GeoLocation location = GeoFire.getLocationValue(dataSnapshot);
if (location != null)
{
this.callback.onLocationResult(dataSnapshot.Key, location);
}
else
{
string message = "GeoFire data has invalid format: " + dataSnapshot.Value;
this.callback.onCancelled(new ExDatabaseError(new Exception(message)));
}
}
}
