Merge pull request #62 from SPEMoorthy/TrakGrap#59

Introduced TrackGraph API Support

Author: rigofunc

src/Microsoft.EntityFrameworkCore.UnitOfWork/IUnitOfWork.cs

@@ -3,6 +3,7 @@
 using System;
 using System.Linq;
 using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
 
 namespace Microsoft.EntityFrameworkCore
 {
@@ -57,5 +58,12 @@ public interface IUnitOfWork : IDisposable
         /// <param name="parameters">The parameters.</param>
         /// <returns>An <see cref="IQueryable{T}"/> that contains elements that satisfy the condition specified by raw SQL.</returns>
         IQueryable<TEntity> FromSql<TEntity>(string sql, params object[] parameters) where TEntity : class;
+
+        /// <summary>
+        /// Uses TrakGrap Api to attach disconnected entities
+        /// </summary>
+        /// <param name="rootEntity"> Root entity</param>
+        /// <param name="callback">Delegate to convert Object's State properities to Entities entry state.</param>
+        void TrackGraph(object rootEntity, Action<EntityEntryGraphNode> callback);
     }
 }

src/Microsoft.EntityFrameworkCore.UnitOfWork/UnitOfWork.cs

@@ -6,6 +6,7 @@
 using System.Linq;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore.ChangeTracking;
 using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Storage;
 
@@ -205,5 +206,10 @@ protected virtual void Dispose(bool disposing)
 
             disposed = true;
         }
+
+        public void TrackGraph(object rootEntity, Action<EntityEntryGraphNode> callback)
+        {
+            _context.ChangeTracker.TrackGraph(rootEntity, callback);
+        }
     }
 }