Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.Entity/System/Data/Spatial/SpatialHelpers.cs

@@ -0,0 +1,44 @@
+//------------------------------------------------------------------------------
+// <copyright file="SpatialHelpers.cs" company="Microsoft">
+//      Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//
+// @owner  willa
+// @backupOwner [....]
+//------------------------------------------------------------------------------
+using System.Diagnostics;
+using System.Data.Metadata.Edm;
+using System.Data.Common;
+
+namespace System.Data.Spatial
+{
+    internal static class SpatialHelpers
+    {
+        internal static object GetSpatialValue(MetadataWorkspace workspace, DbDataReader reader, TypeUsage columnType, int columnOrdinal)
+        {
+            Debug.Assert(Helper.IsSpatialType(columnType));
+            DbSpatialDataReader spatialReader = CreateSpatialDataReader(workspace, reader);
+            if (Helper.IsGeographicType((PrimitiveType)columnType.EdmType))
+            {
+                return spatialReader.GetGeography(columnOrdinal);
+            }
+            else
+            {
+                return spatialReader.GetGeometry(columnOrdinal);
+            }
+        }
+
+        internal static DbSpatialDataReader CreateSpatialDataReader(MetadataWorkspace workspace, DbDataReader reader)
+        {
+            StoreItemCollection storeItemCollection = (StoreItemCollection)workspace.GetItemCollection(DataSpace.SSpace);
+            DbProviderFactory providerFactory = storeItemCollection.StoreProviderFactory;
+            Debug.Assert(providerFactory != null, "GetProviderSpatialServices requires provider factory to have been initialized");
+
+            DbProviderServices providerServices = DbProviderServices.GetProviderServices(providerFactory);
+            DbSpatialDataReader result = providerServices.GetSpatialDataReader(reader, storeItemCollection.StoreProviderManifestToken);
+            Debug.Assert(result != null, "DbProviderServices did not throw ProviderIncompatibleException for null IDbSpatialDataReader");
+
+            return result;
+        }
+    }
+}