/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public GeometryValueConverter(Type type, SqlServerSpatialReader reader)
: base(
(Expression <Func <IGeometry, SqlBytes> >)(g => new SqlBytes(_writer.Write(g))),
GetConvertFromProviderExpression(type, reader))
{
ModelClrType = type;
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public SqlServerGeometryTypeMapping(Type clrType, SqlServerSpatialReader reader, string storeType)
: base(
new RelationalTypeMappingParameters(
new CoreTypeMappingParameters(
clrType,
new GeometryValueConverter(clrType, reader),
new GeometryValueComparer(clrType)),
storeType))
{
_reader = reader;
}
private static LambdaExpression GetConvertFromProviderExpression(Type type, SqlServerSpatialReader reader)
{
var bytes = Expression.Parameter(typeof(SqlBytes), "bytes");
Expression body = Expression.Call(
Expression.Constant(reader),
typeof(SqlServerSpatialReader).GetRuntimeMethod(nameof(SqlServerSpatialReader.Read), new[] { typeof(byte[]) }),
new[]
{
Expression.Property(bytes, nameof(SqlBytes.Value))
});
if (!type.IsAssignableFrom(typeof(IGeometry)))
{
body = Expression.Convert(body, type);
}
return(Expression.Lambda(body, bytes));
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public SqlServerNTSTypeMappingSourcePlugin([NotNull] IGeometryServices geometryServices)
{
Check.NotNull(geometryServices, nameof(geometryServices));
_reader = new SqlServerSpatialReader(geometryServices);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public GeometryValueConverter(SqlServerSpatialReader reader)
: base(
g => new SqlBytes(_writer.Write(g)),
b => (TGeometry)reader.Read(b.Value))
{
}
public SqlServerGeometryTypeMapping(SqlServerSpatialReader reader, string storeType)
: base(new GeometryValueConverter <TGeometry>(reader), storeType)
{
}
