| // Copyright (C) 2011 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.server.account; |
| |
| import com.google.gerrit.common.data.GroupInfo; |
| import com.google.gerrit.common.data.GroupInfoCache; |
| import com.google.gerrit.reviewdb.client.AccountGroup; |
| import com.google.inject.Inject; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** Efficiently builds a {@link GroupInfoCache}. */ |
| public class GroupInfoCacheFactory { |
| public interface Factory { |
| GroupInfoCacheFactory create(); |
| } |
| |
| private final GroupCache groupCache; |
| private final Map<AccountGroup.Id, AccountGroup> out; |
| |
| @Inject |
| GroupInfoCacheFactory(final GroupCache groupCache) { |
| this.groupCache = groupCache; |
| this.out = new HashMap<AccountGroup.Id, AccountGroup>(); |
| } |
| |
| /** |
| * Indicate a group will be needed later on. |
| * |
| * @param id identity that will be needed in the future; may be null. |
| */ |
| public void want(final AccountGroup.Id id) { |
| if (id != null && !out.containsKey(id)) { |
| out.put(id, groupCache.get(id)); |
| } |
| } |
| |
| /** Indicate one or more groups will be needed later on. */ |
| public void want(final Iterable<AccountGroup.Id> ids) { |
| for (final AccountGroup.Id id : ids) { |
| want(id); |
| } |
| } |
| |
| public AccountGroup get(final AccountGroup.Id id) { |
| want(id); |
| return out.get(id); |
| } |
| |
| /** |
| * Create an GroupInfoCache with the currently loaded AccountGroup entities. |
| * */ |
| public GroupInfoCache create() { |
| final List<GroupInfo> r = new ArrayList<GroupInfo>(out.size()); |
| for (final AccountGroup a : out.values()) { |
| r.add(new GroupInfo(a)); |
| } |
| return new GroupInfoCache(r); |
| } |
| } |