/// <summary>
/// Gets the nearest station to a given latitude and longitude
/// </summary>
/// <param name="latitude">Latitude of location</param>
/// <param name="longitude">Longitude of location</param>
/// <param name="updateOnCreation">Updates the weather information from NOAA during the objects initialization</param>
/// <param name="autoUpdate">Sets whether the Station should auto update on a timer</param>
/// <returns>The Station closest to the provided coorodinate</returns>
public MetarStation Lookup(double latitude, double longitude, bool updateOnCreation = true, bool autoUpdate = true)
{
if (isPersistent)
{
return(new MetarStation(stations.GetClosestStationInfo(latitude, longitude), autoUpdate, updateOnCreation));
}
using (var dataTable = new StationDataTable())
return(new MetarStation(dataTable.GetClosestStationInfo(latitude, longitude), autoUpdate, updateOnCreation));
}
/// <summary>
/// Gets the station (if any) matching an ICAO code
/// </summary>
/// <param name="icao">Station's ICAO code</param>
/// <param name="updateOnCreation">Updates the weather information from NOAA during the objects initialization</param>
/// <param name="autoUpdate">Sets whether the Station should auto update on a timer</param>
/// <returns>A Station matching the ICAO code</returns>
public MetarStation Lookup(string icao, bool updateOnCreation = true, bool autoUpdate = true)
{
if (isPersistent)
{
return(new MetarStation(stations.GetStationInfo(icao), autoUpdate, updateOnCreation));
}
using (var dataTable = new StationDataTable())
return(new MetarStation(dataTable.GetStationInfo(icao), autoUpdate, updateOnCreation));
}
/// <summary>
/// Sets whether the StationDataTable should be persistant in memory or be collected by GC.
/// isPersistent is default true, so once the StationDataTable is loaded it will remain in memory
/// due to the singleton nature of this class. This reduces the time to access and search for stations
/// greatly since we no longer have to build the data table every time we want to search. When isPersistent
/// is set to false, the StationDataTable is no longer kept in memory and is rather build only when we need it.
/// This reduces the memory footprint for lower-end devices, however costs extra to initialize. Alternatively
/// setting isPersistent to false can be useful to get rid of the data table from memory after running a multitude of searches.
/// </summary>
/// <param name="val">Boolean to determin if StationLookup should always keep the StationDataTable in memory</param>
public void SetPersistentLookup(bool val)
{
isPersistent = val;
if (val && (stations == null))
{
stations = new StationDataTable();
}
else
{
stations.Dispose();
stations = null;
}
/*if (!val)
* GC.Collect();*/
}
/// <summary>
/// private constructor
/// </summary>
private MetarStationLookup()
{
stations = new StationDataTable();
}
