The Inventory class is a CSLA editable root class. See CSLA documentation for a more detailed description.
コード例 #1
0
        /// <summary>
        ///     Inserts a PetShop.Business.Inventory object into the datasource using a transaction.
        /// </summary>
        /// <param name="transactionManager"><see cref="TransactionManager"/> object</param>
        /// <param name="entity">PetShop.Business.Inventory object to insert.</param>
        /// <remarks>
        ///		After inserting into the datasource, the PetShop.Business.Inventory object will be updated
        ///     to refelect any changes made by the datasource. (ie: identity or computed columns)
        /// </remarks>
        /// <returns>Returns true if operation is successful.</returns>
        /// <exception cref="System.Exception">The command could not be executed.</exception>
        /// <exception cref="System.Data.DataException">The <paramref name="transactionManager"/> is not open.</exception>
        /// <exception cref="System.Data.Common.DbException">The command could not be executed.</exception>
        public override bool Insert(TransactionManager transactionManager, PetShop.Business.Inventory entity)
        {
            SqlDatabase database       = new SqlDatabase(this._connectionString);
            DbCommand   commandWrapper = StoredProcedureProvider.GetCommandWrapper(database, "dbo.Inventory_Insert", _useStoredProcedure);

            database.AddInParameter(commandWrapper, "@ItemId", DbType.AnsiString, entity.ItemId);
            database.AddInParameter(commandWrapper, "@Qty", DbType.Int32, entity.Qty);

            int results = 0;

            //Provider Data Requesting Command Event
            OnDataRequesting(new CommandEventArgs(commandWrapper, "Insert", entity));

            if (transactionManager != null)
            {
                results = Utility.ExecuteNonQuery(transactionManager, commandWrapper);
            }
            else
            {
                results = Utility.ExecuteNonQuery(database, commandWrapper);
            }


            entity.OriginalItemId = entity.ItemId;

            entity.AcceptChanges();

            //Provider Data Requested Command Event
            OnDataRequested(new CommandEventArgs(commandWrapper, "Insert", entity));

            return(Convert.ToBoolean(results));
        }
コード例 #2
0
        protected override void DataPortal_Update()
        {
            bool cancel = false;
            OnUpdating(ref cancel);
            if (cancel) return;

            if(OriginalItemId != ItemId)
            {
                // Insert new child.
                Inventory item = new Inventory {ItemId = ItemId, Qty = Qty};
                
                item = item.Save();

                // Mark editable child lists as dirty. This code may need to be updated to one-to-one relationships.

                // Create a new connection.
                using (var connection = new SqlConnection(ADOHelper.ConnectionString))
                {
                    connection.Open();
                    FieldManager.UpdateChildren(this, connection);
                }

                // Delete the old.
                var criteria = new InventoryCriteria {ItemId = OriginalItemId};
                
                DataPortal_Delete(criteria);

                // Mark the original as the new one.
                OriginalItemId = ItemId;

                OnUpdated();

                return;
            }

            const string commandText = "UPDATE [dbo].[Inventory] SET [ItemId] = @p_ItemId, [Qty] = @p_Qty WHERE [ItemId] = @p_OriginalItemId; SELECT [ItemId] FROM [dbo].[Inventory] WHERE [ItemId] = @p_OriginalItemId";
            using (var connection = new SqlConnection(ADOHelper.ConnectionString))
            {
                connection.Open();
                using(var command = new SqlCommand(commandText, connection))
                {
                    command.Parameters.AddWithValue("@p_OriginalItemId", this.OriginalItemId);
                command.Parameters.AddWithValue("@p_ItemId", this.ItemId);
                command.Parameters.AddWithValue("@p_Qty", this.Qty);

                    //result: The number of rows changed, inserted, or deleted. -1 for select statements; 0 if no rows were affected, or the statement failed. 
                    int result = command.ExecuteNonQuery();
                    if (result == 0)
                        throw new DBConcurrencyException("The entity is out of date on the client. Please update the entity and try again. This could also be thrown if the sql statement failed to execute.");

                    LoadProperty(_originalItemIdProperty, this.ItemId);
                }
            }

            OnUpdated();
        }