Add an IRelationalAnnotationProvider implementation. (#119)

src/EFCore.Jet/Extensions/JetServiceCollectionExtensions.cs

@@ -3,6 +3,7 @@
 using EntityFrameworkCore.Jet.Diagnostics.Internal;
 using EntityFrameworkCore.Jet.Infrastructure.Internal;
 using EntityFrameworkCore.Jet.Internal;
+using EntityFrameworkCore.Jet.Metadata.Internal;
 using EntityFrameworkCore.Jet.Migrations.Internal;
 using EntityFrameworkCore.Jet.Query;
 using EntityFrameworkCore.Jet.Query.ExpressionTranslators.Internal;
@@ -19,6 +20,7 @@ using Microsoft.EntityFrameworkCore.Storage;
 using Microsoft.EntityFrameworkCore.Update;
 using EntityFrameworkCore.Jet.Utilities;
 using Microsoft.EntityFrameworkCore.Diagnostics;
+using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Metadata.Conventions;
 using Microsoft.EntityFrameworkCore.Metadata.Conventions.Infrastructure;
 using Microsoft.EntityFrameworkCore.ValueGeneration;
@@ -40,6 +42,7 @@ namespace Microsoft.Extensions.DependencyInjection
                 .TryAdd<IDatabaseProvider, DatabaseProvider<JetOptionsExtension>>()
                 .TryAdd<IRelationalTypeMappingSource, JetTypeMappingSource>()
                 .TryAdd<ISqlGenerationHelper, JetSqlGenerationHelper>()
+                .TryAdd<IRelationalAnnotationProvider, JetAnnotationProvider>()
                 .TryAdd<IMigrationsAnnotationProvider, JetMigrationsAnnotationProvider>()
                 .TryAdd<IModelValidator, JetModelValidator>()
                 .TryAdd<IProviderConventionSetBuilder, JetConventionSetBuilder>()

src/EFCore.Jet/Metadata/Internal/JetAnnotationProvider.cs

@@ -0,0 +1,91 @@
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using JetBrains.Annotations;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace EntityFrameworkCore.Jet.Metadata.Internal
+{
+    /// <summary>
+    ///     <para>
+    ///         This is an internal API that supports the Entity Framework Core infrastructure and not subject to
+    ///         the same compatibility standards as public APIs. It may be changed or removed without notice in
+    ///         any release. You should only use it directly in your code with extreme caution and knowing that
+    ///         doing so can result in application failures when updating to a new Entity Framework Core release.
+    ///     </para>
+    ///     <para>
+    ///         The service lifetime is <see cref="ServiceLifetime.Singleton" />. This means a single instance
+    ///         is used by many <see cref="DbContext" /> instances. The implementation must be thread-safe.
+    ///         This service cannot depend on services registered as <see cref="ServiceLifetime.Scoped" />.
+    ///     </para>
+    /// </summary>
+    public class JetAnnotationProvider : RelationalAnnotationProvider
+    {
+        /// <summary>
+        ///     Initializes a new instance of this class.
+        /// </summary>
+        /// <param name="dependencies"> Parameter object containing dependencies for this service. </param>
+        public JetAnnotationProvider([NotNull] RelationalAnnotationProviderDependencies dependencies)
+            : base(dependencies)
+        {
+        }
+        
+        /// <summary>
+        ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
+        ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
+        ///     any release. You should only use it directly in your code with extreme caution and knowing that
+        ///     doing so can result in application failures when updating to a new Entity Framework Core release.
+        /// </summary>
+        public override IEnumerable<IAnnotation> For(ITableIndex index)
+        {
+            // Model validation ensures that these facets are the same on all mapped indexes
+            var modelIndex = index.MappedIndexes.First();
+
+            var table = index.Table;
+
+            var includeProperties = modelIndex.GetIncludeProperties();
+            if (includeProperties != null)
+            {
+                var includeColumns = (IReadOnlyList<string>)includeProperties
+                    .Select(
+                        p => modelIndex.DeclaringEntityType.FindProperty(p)
+                            .GetColumnName(StoreObjectIdentifier.Table(table.Name, table.Schema)))
+                    .ToArray();
+
+                yield return new Annotation(
+                    JetAnnotationNames.Include,
+                    includeColumns);
+            }
+        }
+
+        /// <summary>
+        ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
+        ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
+        ///     any release. You should only use it directly in your code with extreme caution and knowing that
+        ///     doing so can result in application failures when updating to a new Entity Framework Core release.
+        /// </summary>
+        public override IEnumerable<IAnnotation> For(IColumn column)
+        {
+            var table = StoreObjectIdentifier.Table(column.Table.Name, column.Table.Schema);
+            var property = column.PropertyMappings.Where(
+                    m =>
+                        m.TableMapping.IsSharedTablePrincipal && m.TableMapping.EntityType == m.Property.DeclaringEntityType)
+                .Select(m => m.Property)
+                .FirstOrDefault(
+                    p => p.GetValueGenerationStrategy(table)
+                        == JetValueGenerationStrategy.IdentityColumn);
+            if (property != null)
+            {
+                var seed = property.GetIdentitySeed(table);
+                var increment = property.GetIdentityIncrement(table);
+
+                yield return new Annotation(
+                    JetAnnotationNames.Identity,
+                    string.Format(CultureInfo.InvariantCulture, "{0}, {1}", seed ?? 1, increment ?? 1));
+            }
+        }
+    }
+}

src/EFCore.Jet/Migrations/Internal/JetMigrationsAnnotationProvider.cs

@@ -1,14 +1,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using System.Collections.Generic;
-using System.Globalization;
-using System.Linq;
-using EntityFrameworkCore.Jet.Metadata;
-using EntityFrameworkCore.Jet.Metadata.Internal;
 using JetBrains.Annotations;
 using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Migrations;
 using Microsoft.Extensions.DependencyInjection;
 
@@ -37,6 +30,5 @@ namespace EntityFrameworkCore.Jet.Migrations.Internal
             : base(dependencies)
         {
         }
-        
     }
 }