| // Copyright (C) 2013 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.info.ChangeInfo.RevisionInfo; |
| import com.google.gerrit.reviewdb.client.Change; |
| import com.google.gerrit.reviewdb.client.PatchSet; |
| |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** Cache of PatchSet.Id to revision SHA-1 strings. */ |
| public class RevisionInfoCache { |
| private static final int LIMIT = 10; |
| private static final RevisionInfoCache IMPL = new RevisionInfoCache(); |
| |
| public static void add(Change.Id change, RevisionInfo info) { |
| IMPL.psToCommit.put( |
| new PatchSet.Id(change, info._number()), |
| info.name()); |
| } |
| |
| static String get(PatchSet.Id id) { |
| return IMPL.psToCommit.get(id); |
| } |
| |
| private final LinkedHashMap<PatchSet.Id, String> psToCommit; |
| |
| @SuppressWarnings("serial") |
| private RevisionInfoCache() { |
| psToCommit = new LinkedHashMap<PatchSet.Id, String>(LIMIT) { |
| @Override |
| protected boolean removeEldestEntry(Map.Entry<PatchSet.Id, String> e) { |
| return size() > LIMIT; |
| } |
| }; |
| } |
| } |