Oracle.EntityFrameworkCore.NetTopologySuite 10.23.26200

Oracle.EntityFrameworkCore.NetTopologySuite 10.23.26200

Release Notes for Oracle Entity Framework Core NetTopologySuite 10 NuGet Package

April 2026

Oracle.EntityFrameworkCore.NetTopologySuite is the spatial extension for Oracle Entity Framework Core provider. It enables the use of spatial data types with Oracle databases through Entity Framework Core and NetTopologySuite (NTS). Entity Framework Core (EF Core) is a cross-platform Microsoft object-relational mapper that enables .NET developers to work with relational databases using .NET objects.

This document provides information that supplements the ODP.NET Entity Framework Core NetTopologySuite documentation.

Oracle .NET Links

• Oracle Spatial and Graph Developer's Guide
• Oracle .NET Home Page
• GitHub - Sample Code
• ODP.NET Discussion Forum
• YouTube
• X (Twitter)
• Email Newsletter Sign Up

New Features

• First production release.

Bug Fixes / Changes in Oracle.EntityFrameworkCore.NetTopologySuite 10.23.26200

• Upgrade dependency to Oracle Entity Framework Core 10.23.26200 or higher

Tips, Limitations, and Known Issues

LINQ

• LINQ queries comparing GeometryCollection objects with a Polygon as the last item after a LineString are not supported. For example, imagine an entity model with the following entities:

public class GeoEntity
{
    public int Id { get; set; }
    public GeometryCollection Shape { get; set; }
}

The following LINQ would throw 'ORA-13354: incorrect offset in ELEM_INFO_ARRAY':

var gc = new GeometryCollection(
    new Geometry[]
    {
        new Point(1, 1) { SRID = 4326 },
        new LineString(new[]
        {
            new Coordinate(2, 2),
            new Coordinate(3, 3)
        }) { SRID = 4326 },
        new Polygon(new LinearRing(new[]
        {
            new Coordinate(4, 4),
            new Coordinate(4, 6),
            new Coordinate(6, 6),
            new Coordinate(6, 4),
            new Coordinate(4, 4)
        })) { SRID = 4326 }
    }
) { SRID = 4326 };

var match = context.Geometries
                   .Where(e => e.Shape.EqualsExact(gc))
                   .ToList();

As a workaround, Ensure the polygon is placed before the LineString:

var gc = new GeometryCollection(
    new Geometry[]
    {
        new Point(1, 1) { SRID = 4326 },
        new Polygon( ... ) { SRID = 4326 },
        new LineString( ... ) { SRID = 4326 }
    }
);

• LINQ queries using union or convex hull aggregates that return MULTIPOINT are not supported in Oracle 19c database version. Let us first imagine an entity model with the following entity:

public class PointEntity
{
    public int Id { get; set; }
    public string Group { get; set; }
    public Point Point { get; set; }
}

The following LINQ will return incomplete or invalid geometry in the union and convex hull result against Oracle 19c database version:

var results = context.PointEntity
    .Where(e => e.Point != null)
    .GroupBy(e => e.Group)
    .Select(g => new {         
        Union = UnaryUnionOp.Union(g.Select(e => e.Point)),
        ConvexHull = ConvexHull.Create(g.Select(e => e.Point))
        })
    .ToList();

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