| // Copyright (C) 2012 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.gerrit.client.changes; |
| |
| import com.google.gerrit.client.ui.ListenableValue; |
| import com.google.gerrit.common.data.ChangeInfo; |
| import com.google.gerrit.reviewdb.client.Change; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** A Cache to store common client side data by change */ |
| public class ChangeCache { |
| private static Map<Change.Id, ChangeCache> caches = |
| new HashMap<Change.Id, ChangeCache>(); |
| |
| public static ChangeCache get(Change.Id chg) { |
| ChangeCache cache = caches.get(chg); |
| if (cache == null) { |
| cache = new ChangeCache(chg); |
| caches.put(chg, cache); |
| } |
| return cache; |
| } |
| |
| private Change.Id changeId; |
| private ChangeDetailCache detail; |
| private ListenableValue<ChangeInfo> info; |
| |
| protected ChangeCache(Change.Id chg) { |
| changeId = chg; |
| } |
| |
| public Change.Id getChangeId() { |
| return changeId; |
| } |
| |
| public ChangeDetailCache getChangeDetailCache() { |
| if (detail == null) { |
| detail = new ChangeDetailCache(changeId); |
| } |
| return detail; |
| } |
| |
| public ListenableValue<ChangeInfo> getChangeInfoCache() { |
| if (info == null) { |
| info = new ListenableValue<ChangeInfo>(); |
| } |
| return info; |
| } |
| } |