Exemplo n.º 1
0
        public static IncludePaths Create(params IncludePath[] paths)
        {
            var include = new IncludePaths();

            foreach (var item in paths)
            {
                include.Paths.Add(item);
            }
            return(include);
        }
Exemplo n.º 2
0
        public static IncludePaths Create <TEntity>(params Expression <Func <TEntity, object> >[] paths)
        {
            var include = new IncludePaths();

            foreach (var item in paths)
            {
                include.Paths.Add(IncludePath.Create <TEntity>(item));
            }
            return(include);
        }
Exemplo n.º 3
0
        public async Task LoadProperties <TEntity>(IEnumerable <TEntity> entities, IncludePaths paths, CancellationToken token = default(CancellationToken))
        {
            var meta = this.Model.GetEntityMetadata <TEntity>();

            if (meta == null)
            {
                throw new ArgumentOutOfRangeException("TEntity", "The entity type is not part of the given MetadataModel.");
            }

            var keys = entities.Select(p => meta.GetEntityKey(p)).Distinct().ToList();

            if (token.IsCancellationRequested)
            {
                return;
            }

            var service = await ServiceContext.Current.GetServiceAsync <TService>(token);

            if (token.IsCancellationRequested)
            {
                return;
            }

            var response = await service.GetPropertyValuesAsync(keys, paths);

            if (token.IsCancellationRequested)
            {
                return;
            }

            foreach (var item in response)
            {
                var entity = this.Model.GetEntityMetadata(item.EntityType);

                var prop = entity.Properties.OfType <NavigationPropertyMetadata>().SingleOrDefault(p => p.Name == item.PropertyName);
                if (prop == null)
                {
                    throw new InvalidOperationException(string.Format("The NavigationProperty {0} could not be found on type {1}", item.PropertyName, item.EntityType));
                }

                if (prop.Multiplicity == NavigationPropertyMultiplicity.Many && prop.TargetNavigationProperty.Multiplicity != NavigationPropertyMultiplicity.Many)
                {
                    foreach (var nav in item.Values.Select(p => p.Value))
                    {
                        foreach (var e in entities)
                        {
                            if (prop.TargetNavigationProperty.MatchForeignKeys(nav, e))
                            {
                                //TODO handle Null Value
                                prop.AddItem(e, nav);
                            }
                        }
                    }
                }
                else if (prop.Multiplicity == NavigationPropertyMultiplicity.Many && prop.TargetNavigationProperty.Multiplicity == NavigationPropertyMultiplicity.Many)
                {
                    //TODO implement
                }
                else
                {
                    foreach (var nav in item.Values.Select(p => p.Value))
                    {
                        foreach (var e in entities)
                        {
                            if (prop.MatchForeignKeys(e, nav))
                            {
                                prop.SetValue(e, nav);
                            }
                        }
                    }
                }
            }
        }
Exemplo n.º 4
0
 public Task LoadProperties <TEntity>(TEntity entity, IncludePaths paths, CancellationToken token = default(CancellationToken))
 {
     return(LoadProperties <TEntity>(new[] { entity }, paths, token));
 }