private ContourTileData GetContourTileData(ContourQuery contourQuery)
{
string key = new ConnectionStringParser().ComposeConnectionString(contourQuery);
ContourTileData contourTileData = new ContourTileData();
CacheItemPolicy cacheItemPolicy = new CacheItemPolicy() { SlidingExpiration = TimeSpan.FromMinutes(1) };
contourTileData = (ContourTileData)s_contourDataCache.AddOrGetExisting(key, contourTileData, cacheItemPolicy) ?? contourTileData;
if ((object)contourTileData.IDWFunction != null && (object)contourTileData.ColorFunction != null)
return contourTileData;
using (ManualResetEvent waitHandle = new ManualResetEvent(false))
{
ManualResetEvent cachedWaitHandle = Interlocked.CompareExchange(ref contourTileData.WaitHandle, waitHandle, null);
try
{
try
{
if ((object)cachedWaitHandle != null)
{
cachedWaitHandle.WaitOne();
return contourTileData;
}
}
catch (ObjectDisposedException)
{
return contourTileData;
}
List<TrendingDataLocation> locations = GetFrameFromDailySummary(contourQuery);
Func<double, double> colorFunction = GetColorScale(contourQuery);
IDWFunc idwFunction = GetIDWFunction(contourQuery, locations);
contourTileData.MinLatitude = locations.Min(location => location.Latitude) - GetLatFromMiles(50.0D);
contourTileData.MaxLatitude = locations.Max(location => location.Latitude) + GetLatFromMiles(50.0D);
contourTileData.MinLongitude = locations.Min(location => location.Longitude) - GetLngFromMiles(50.0D, 0.0D);
contourTileData.MaxLongitude = locations.Max(location => location.Longitude) + GetLngFromMiles(50.0D, 0.0D);
contourTileData.IDWFunction = idwFunction;
contourTileData.ColorFunction = colorFunction;
return contourTileData;
}
finally
{
waitHandle.Set();
}
}
}
/// <summary>
/// Creates a new instance of the <see cref="SystemSettings"/> class.
/// </summary>
/// <param name="connectionString">A string containing the system settings as key-value pairs.</param>
public SystemSettings(string connectionString)
{
ConnectionStringParser<SettingAttribute> parser = new ConnectionStringParser<SettingAttribute>();
parser.ParseConnectionString(connectionString, this);
}
public string ToConnectionString()
{
ConnectionStringParser<SettingAttribute> parser = new ConnectionStringParser<SettingAttribute>();
parser.ExplicitlySpecifyDefaults = true;
return parser.ComposeConnectionString(this);
}
/// <summary>
/// Creates a new instance of the <see cref="FileShare"/> class.
/// </summary>
/// <param name="connectionString">A string containing the file share parameters as key-value pairs.</param>
public FileShare(string connectionString)
{
ConnectionStringParser<SettingAttribute> parser = new ConnectionStringParser<SettingAttribute>();
parser.ParseConnectionString(connectionString, this);
}