public static bool updateSightings()
{
DateTime now = DateTime.Now;
DataTable resultdt = DbConnector.GetSpeciesFromDB();
if (resultdt == null)
{
return(false);
}
foreach (DataRow row in resultdt.Rows)
{
String birdTableName = "testdb.bird" + row["speciename"].ToString();
birdTableName = birdTableName.Replace("-", "");
String clearQuery = "DELETE from " + birdTableName + ";";
executeNonQuery(clearQuery);
string sightingsQuery = "SELECT * FROM testdb.sightings WHERE specie = '@name';";
sightingsQuery = sightingsQuery.Replace("@name", row["speciename"].ToString());
DataTable birds = executeQuery(sightingsQuery);
if (birds == null)
{
return(false);
}
var freshBirds = new List <BirdSighting>();
foreach (DataRow birbRow in birds.Rows)
{
DateTime time = Convert.ToDateTime(birbRow["timestamp"]);
TimeSpan span = now.Subtract(time);
double lon = Convert.ToDouble(birbRow["longitudecoord"]);
double lat = Convert.ToDouble(birbRow["latitudecoord"]);
if (span.CompareTo(TimeSpan.FromDays(FRESH_BIRD_TIMESPAN)) < 0)
{
var sighting = new BirdSighting
{
username = "",
specie = row["speciename"].ToString(),
longitudecoord = lon,
latitudecoord = lat,
comment = "",
timestamp = now
};
freshBirds.Add(sighting);
}
}
double[][] clusters = KekMeansLocationProviderAdapter.ClusterPartitions(freshBirds.ToList <LocationProvider>(), KekMeansLocationProviderAdapter.DEFAULT_CLUSTER_AMOUNT);
string insertQuery = "INSERT INTO " + birdTableName + " VALUES(@latitude, @longtitude);";
for (int i = 0; i < clusters.Length; i++)
{
string insertCopy = String.Copy(insertQuery);
insertCopy = insertCopy.Replace("@latitude", clusters[i][0].ToString());
insertCopy = insertCopy.Replace("@longtitude", clusters[i][1].ToString());
executeNonQuery(insertCopy);
}
}
return(true);
}
public IEnumerable <Tower> getTowersClustered()
{
//TODO: Only needs to fetch coordinates from database?
IEnumerable <Tower> Towers = GetTowers();
double[][] clusters = KekMeansLocationProviderAdapter.ClusterPartitions(Towers.ToList <LocationProvider>(), KekMeansLocationProviderAdapter.DEFAULT_CLUSTER_AMOUNT);
var ResultList = new List <Tower>();
for (int i = 0; i < clusters.Length; i++)
{
Tower cluster = new Tower
{
id = i.ToString(),
municipal = "testipesti",
towername = "Cluster" + i.ToString(),
latitudecoord = clusters[i][0].ToString(),
longitudecoord = clusters[i][1].ToString()
};
ResultList.Add(cluster);
}
return(ResultList);
}