コード例 #1
0
        /// <summary>
        /// Create new Tracking Iterator for root entity of type {TEntity}
        /// </summary>
        /// <typeparam name="TEntity">Type of root entity</typeparam>
        /// <param name="entity">Root entity</param>
        /// <returns>STE Graph Iterator</returns>
        internal static ChangeTrackerIterator Create <TEntity>(TEntity entity)
            where TEntity : IObjectWithChangeTracker
        {
            ChangeTrackerIterator iterator = new ChangeTrackerIterator();

            iterator.Visit(entity);

            return(iterator);
        }
コード例 #2
0
 /// <summary>
 /// This method remove duplications in object graph on the client.
 /// <remarks>For more information about duplications problems in Selft Tracking Entities
 /// see http://blogs.msdn.com/b/diego/archive/2010/10/06/self-tracking-entities-applychanges-and-duplicate-entities.aspx
 /// </remarks>
 /// <example>
 /// customer.MergeWith(graphWithCustomer,(c1,c2)=>c1.IdCustomer == c2.IdCustomer);
 /// </example>
 /// </summary>
 /// <typeparam name="TEntity">Entity</typeparam>
 /// <typeparam name="TGraph">Grago</typeparam>
 /// <param name="entity">Type of entity</param>
 /// <param name="graph">Type of root graph</param>
 /// <param name="keyComparer">the key compararer</param>
 /// <returns>returns an instance from the graph with the same key or the original entity </returns>
 public static TEntity MergeWith <TEntity, TGraph>(this TEntity entity, TGraph graph, Func <TEntity, TEntity, bool> keyComparer)
     where TEntity : class, IObjectWithChangeTracker
     where TGraph : class, IObjectWithChangeTracker
 {
     using (ChangeTrackerIterator iterator = ChangeTrackerIterator.Create(graph))
     {
         return(iterator.OfType <TEntity>().SingleOrDefault(e => keyComparer(entity, e)) ?? entity);
     }
 }
コード例 #3
0
 /// <summary>
 /// Accept all changes in all entities associated with <paramref name="entity"/>
 /// </summary>
 /// <param name="entity">Root entity</param>
 public static void AcceptAllChanges(this IObjectWithChangeTracker entity)
 {
     using (ChangeTrackerIterator iterator = ChangeTrackerIterator.Create(entity))
         iterator.Execute(ste => ste.AcceptChanges());
 }
コード例 #4
0
 /// <summary>
 /// Stop tracking in all entities associated with <paramref name="entity"/>
 /// </summary>
 /// <param name="entity">Root entity</param>
 public static void StopTrackingAll(this IObjectWithChangeTracker entity)
 {
     using (ChangeTrackerIterator iterator = ChangeTrackerIterator.Create(entity))
         iterator.Execute(ste => ste.StopTracking());
 }