| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hiveboard.model; |
| 16 | |
| 17 | import java.util.HashMap; |
| 18 | import java.util.Map; |
| 19 | |
| 20 | import net.sourceforge.hiveboard.Account; |
| 21 | import net.sourceforge.hiveboard.Event; |
| 22 | import net.sourceforge.hiveboard.EventType; |
| 23 | import net.sourceforge.hiveboard.event.ConstraintEventFilter; |
| 24 | import net.sourceforge.hiveboard.event.Constraints; |
| 25 | import net.sourceforge.hiveboard.event.EventsPriorities; |
| 26 | import net.sourceforge.hiveboard.event.PersistentDeferredConsumer; |
| 27 | import net.sourceforge.hiveevents.Channel; |
| 28 | import net.sourceforge.hiveevents.Filter; |
| 29 | |
| 30 | /** |
| 31 | * Service acting as a memory repository of all active Accounts in the system. |
| 32 | * <p> |
| 33 | * This service must use the singleton service model. |
| 34 | * |
| 35 | * @author Jean-Francois Poilpret |
| 36 | */ |
| 37 | public class AccountRepositoryImpl implements AccountRepository |
| 38 | { |
| 39 | public AccountRepositoryImpl(Channel<Event> eventChannel) |
| 40 | { |
| 41 | // Add events listeners |
| 42 | int priority = EventsPriorities.ACCOUNT_REPOSITORY_UPDATE; |
| 43 | String constraint = Constraints.eventType( EventType.EVT_CREATE_ACCOUNT, |
| 44 | EventType.EVT_MODIFY_ACCOUNT); |
| 45 | Filter<Event> filter = new ConstraintEventFilter(constraint); |
| 46 | PersistentDeferredConsumer consumer = new PersistentDeferredConsumer() |
| 47 | { |
| 48 | @Override protected void pushEvent(Event event) |
| 49 | { |
| 50 | _accounts.put(event.getWho(), event.getAccount()); |
| 51 | } |
| 52 | }; |
| 53 | |
| 54 | eventChannel.registerPushConsumer(priority, filter, consumer); |
| 55 | |
| 56 | constraint = Constraints.eventType(EventType.EVT_DESTROY_ACCOUNT); |
| 57 | filter = new ConstraintEventFilter(constraint); |
| 58 | consumer = new PersistentDeferredConsumer() |
| 59 | { |
| 60 | @Override protected void pushEvent(Event event) |
| 61 | { |
| 62 | _accounts.remove(event.getWho()); |
| 63 | } |
| 64 | }; |
| 65 | eventChannel.registerPushConsumer(priority, filter, consumer); |
| 66 | |
| 67 | constraint = Constraints.eventType(EventType.EVT_LOGIN); |
| 68 | filter = new ConstraintEventFilter(constraint); |
| 69 | consumer = new PersistentDeferredConsumer() |
| 70 | { |
| 71 | @Override protected void pushEvent(Event event) |
| 72 | { |
| 73 | getAccount(event.getWho()).setConnected(true); |
| 74 | } |
| 75 | }; |
| 76 | eventChannel.registerPushConsumer(priority, filter, consumer); |
| 77 | |
| 78 | constraint = Constraints.eventType(EventType.EVT_LOGOUT); |
| 79 | filter = new ConstraintEventFilter(constraint); |
| 80 | consumer = new PersistentDeferredConsumer() |
| 81 | { |
| 82 | @Override protected void pushEvent(Event event) |
| 83 | { |
| 84 | getAccount(event.getWho()).setConnected(false); |
| 85 | } |
| 86 | }; |
| 87 | eventChannel.registerPushConsumer(priority, filter, consumer); |
| 88 | } |
| 89 | |
| 90 | public Account getAccount(int id) |
| 91 | { |
| 92 | return _accounts.get(id); |
| 93 | } |
| 94 | |
| 95 | public Account[] getAccounts() |
| 96 | { |
| 97 | return _accounts.values().toArray(new Account[0]); |
| 98 | } |
| 99 | |
| 100 | protected final Map<Integer, Account> _accounts = new HashMap<Integer, Account>(); |
| 101 | } |