/// <summary>
/// Calls the repository and gets the events from the database using the filter
/// Then it maps these events into a pointCollection object
/// </summary>
/// <param name="filter">Filter that will be used to retrieve data from the database if needed</param>
/// <returns>The PointCollection</returns>
private async Task <PointCollection> GetClusterPointCollection(IFilter filter, string dBCacheKey)
{
var points = new PointCollection();
if (points.Exists(dBCacheKey))
{
return(points);
}
//get list of events from the database. filter is modified in a way it will recieve all pages at once.
List <IEvent> dataBaseResult = await Repository.GetAllEventsAsync(filter);
//map the location, name and id properties
var mapPoints = dataBaseResult.Select(p => new MapPoint()
{
X = p.Longitude, Y = p.Latitude, Name = p.Name, Data = p.Id.ToString()
}).ToList();
//i tried setting the cacheKey to null and timespan to zero to avoid caching
//but it does not work that way.
points.Set(mapPoints, TimeSpan.FromSeconds(300), dBCacheKey);
//return the points
return(points);
}