/// <summary>
/// Converts from GeoAPI geometry type to database geometry type.
/// </summary>
/// <param name="value">The GeoAPI geometry value.</param>
/// <returns></returns>
protected override byte[] FromGeometry(object value)
{
IGeometry geometry = value as IGeometry;
if (geometry == null)
{
return(null);
}
// MySQL parses empty geometry as NULL
if (geometry.IsEmpty)
{
return(null);
}
this.SetDefaultSRID(geometry);
byte[] bytes = new MySQLWriter().Write(geometry);
return(bytes);
}
/// <summary>
/// Converts from GeoAPI geometry type to database geometry type.
/// </summary>
/// <param name="value">The GeoAPI geometry value.</param>
/// <returns></returns>
protected override MySqlGeometry?FromGeometry(object value)
{
IGeometry geometry = value as IGeometry;
if (geometry == null)
{
return(null);
}
// MySQL parses empty geometry as NULL
if (geometry.IsEmpty)
{
return(null); // TODO: Somehow specify an empty geometry and not just null.
// MySqlGeometry does not support empty geometry collections
// so we simply return null for now. At some point we should to
// use GeometryCollection.Empty here, when MySQL supports it.
}
SetDefaultSRID(geometry);
byte[] bytes = new MySQLWriter().Write(geometry);
return(new MySqlGeometry(MySqlDbType.Geometry, bytes));
}
