| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| ConnectionModel |
|
| 0.0;0 |
| 1 | /* | |
| 2 | * #%L | |
| 3 | * ConnectionModel.java - mongodb-async-driver - Allanbank Consulting, Inc. | |
| 4 | * %% | |
| 5 | * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc. | |
| 6 | * %% | |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 8 | * you may not use this file except in compliance with the License. | |
| 9 | * You may obtain a copy of the License at | |
| 10 | * | |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 | * | |
| 13 | * Unless required by applicable law or agreed to in writing, software | |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 16 | * See the License for the specific language governing permissions and | |
| 17 | * limitations under the License. | |
| 18 | * #L% | |
| 19 | */ | |
| 20 | package com.allanbank.mongodb; | |
| 21 | ||
| 22 | /** | |
| 23 | * ConnectionModel provides an enumeration of the connection models that the | |
| 24 | * driver supports. Currently this is related to the number of threads used by | |
| 25 | * the socket connections to the server. | |
| 26 | * | |
| 27 | * @api.yes This interface is part of the driver's API. Public and protected | |
| 28 | * members will be deprecated for at least 1 non-bugfix release | |
| 29 | * (version numbers are <major>.<minor>.<bugfix>) | |
| 30 | * before being removed or modified. | |
| 31 | * @copyright 2012-2013, Allanbank Consulting, Inc., All Rights Reserved | |
| 32 | */ | |
| 33 | 5 | public enum ConnectionModel { |
| 34 | ||
| 35 | /** | |
| 36 | * Each sender thread writes the message to the socket connection directly. | |
| 37 | * A single receive thread is used per connection to receive the replies. | |
| 38 | * While a sender writes each message to the socket the driver still has the | |
| 39 | * ability to batch multiple send requests in a packet but batching is | |
| 40 | * limited to concurrent senders. A single threaded application will not | |
| 41 | * batch requests. | |
| 42 | * <p> | |
| 43 | * This is the default {@code ConnectionModel}. | |
| 44 | * </p> | |
| 45 | * <p> | |
| 46 | * In a multi-threaded application this {@code ConnectionModel} should | |
| 47 | * perform as well as if not better than the {@link #SENDER_RECEIVER_THREAD} | |
| 48 | * model. This is achieved by completely avoiding cross thread passing of | |
| 49 | * the message on a send. | |
| 50 | * </p> | |
| 51 | */ | |
| 52 | 1 | RECEIVER_THREAD, |
| 53 | ||
| 54 | /** | |
| 55 | * Each socket uses a pair of threads: sender and receiver. | |
| 56 | * <p> | |
| 57 | * This was the default {@code ConnectionModel} versions prior to 1.3.0. | |
| 58 | * </p> | |
| 59 | * <p> | |
| 60 | * This {@code ConnectionModel} is most useful for connections where a | |
| 61 | * single {@code write()} to the socket implementation is slow and the | |
| 62 | * application only uses a single write thread. | |
| 63 | * </p> | |
| 64 | * | |
| 65 | * @since 1.0.0 | |
| 66 | */ | |
| 67 | 1 | SENDER_RECEIVER_THREAD; |
| 68 | } |