Maptor

IRI.Maptor.Infrastructure.PersonalGdb

NuGet Target

Persistence adapter for ESRI Personal Geodatabases (.mdb files), accessed via OleDb / Microsoft Access Database Engine. Geodatabases authored by any ArcGIS 10.x or 11.x version are supported — the version-stamped ESRI schema namespace in the geodatabase metadata is normalized automatically, so reads are independent of the authoring ArcGIS version. The adapter also picks whichever ACE OLEDB provider (12.0 or 16.0) is installed on the machine.

Installation

dotnet add package IRI.Maptor.Infrastructure.PersonalGdb

Features

  • PersonalGdbDataSource — Maptor vector data source (IVectorDataSource) over Personal GDB feature classes
  • PersonalGdbInfrastructure — connection and schema helpers (open .mdb, list feature classes, read geometries and attributes)
  • PersonalGdb — write support: create new geodatabases, create feature classes, and insert features (ArcGIS-compatible output)
  • Geometry is read from the Personal GDB binary format and converted to native Geometry<Point> objects
  • Attribute table access with type-mapped field reading

Usage

Writing a Personal Geodatabase:

using IRI.Maptor.Infrastructure.PersonalGdb;
using IRI.Maptor.Infrastructure.PersonalGdb.Enums;
using IRI.Maptor.Infrastructure.PersonalGdb.Model;

// create a new empty .mdb (or PersonalGdb.Open(...) for an existing one)
var gdb = PersonalGdb.CreateEmpty(@"c:\data\my.mdb");

// add a feature class ("layer") with its CRS and attribute schema
gdb.CreateFeatureClass("Roads", GeometryType.LineString, SrsBases.GeodeticWgs84,
    new List<PersonalGdbField>
    {
        new() { Name = "Name", FieldType = GdbEsriFieldType.esriFieldTypeString, Length = 100 },
        new() { Name = "Code", FieldType = GdbEsriFieldType.esriFieldTypeInteger },
    });

// insert features (geometries must already be in the feature class CRS)
gdb.Insert("Roads", features);

Notes:

  • Supported geometry types: Point, MultiPoint, LineString/MultiLineString, Polygon/MultiPolygon — XY only (no Z/M).
  • CreateEmpty extracts an embedded template (template.mdb), an empty personal geodatabase authored in ArcCatalog (ArcGIS 10.7 catalog schema). All catalog metadata (GDB_Items, GDB_ItemRelationships, GDB_GeomColumns, GDB_SpatialRefs) plus the per-feature-class spatial index tables are maintained on write, so the result opens in ArcMap/ArcCatalog.
  • OBJECTID, SHAPE, and (for lines/polygons) SHAPE_Length/SHAPE_Area columns are created and populated automatically.

Limitations

  • Windows only (OleDb / ACE provider).
  • Microsoft Access Database Engine (ACE OLEDB 12.0 or 16.0) must be installed.

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