internal static void Create(string connectionString,
string name, MbTilesType type, double version, string description,
MbTilesFormat format, Extent extent, params string[] kvp)
{
var dict = new Dictionary <string, string>();
if (!string.IsNullOrEmpty(name))
{
dict.Add("name", name);
}
dict.Add("type", type.ToString().ToLowerInvariant());
dict.Add("version", version.ToString(CultureInfo.InvariantCulture));
if (!string.IsNullOrEmpty(description))
{
dict.Add("description", description);
}
dict.Add("format", format.ToString().ToLower());
dict.Add("bounds", string.Format(NumberFormatInfo.InvariantInfo,
"{0},{1},{2},{3}", extent.MinX, extent.MinY, extent.MaxX, extent.MaxY));
for (var i = 0; i < kvp.Length - 1; i++)
{
dict.Add(kvp[i++], kvp[i]);
}
}
internal MbTilesCache(SQLiteConnectionString connectionString, ITileSchema schema = null, MbTilesType type = MbTilesType.None)
{
if (_connectionPool == null)
{
throw new InvalidOperationException("You must assign a platform prior to using MbTilesCache by calling MbTilesTileSource.SetPlatform()");
}
_connectionString = connectionString;
var connection = _connectionPool.GetConnection(connectionString);
using (connection.Lock())
{
_type = type == MbTilesType.None ? ReadType(connection) : type;
if (schema == null)
{
// Format (if defined)
_format = ReadFormat(connection);
// Extent
_extent = ReadExtent(connection);
if (HasMapTable(connection))
{
// it is possible to override the schema by definining it in a 'map' table.
// This method depends on reading tiles from an 'images' table, which
// is not part of the MBTiles spec
// Declared zoom levels
var declaredZoomLevels = ReadZoomLevels(connection, out _tileRange);
// Create schema
_schema = new GlobalMercator(_format.ToString(), declaredZoomLevels);
}
else
{
// this is actually the most regular case:
_schema = new GlobalSphericalMercator();
}
}
else
{
_schema = schema;
}
}
}
