| // 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.projects; |
| |
| import com.google.gerrit.client.ui.CommentLinkProcessor; |
| import com.google.gerrit.reviewdb.client.Project; |
| import com.google.gwt.core.client.GWT; |
| import com.google.gwt.user.client.rpc.AsyncCallback; |
| |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** Cache of {@link ConfigInfo} objects by project name. */ |
| public class ConfigInfoCache { |
| private static final int LIMIT = 25; |
| private static final ConfigInfoCache instance = |
| GWT.create(ConfigInfoCache.class); |
| |
| public static class Entry { |
| private final ConfigInfo info; |
| private CommentLinkProcessor commentLinkProcessor; |
| |
| private Entry(ConfigInfo info) { |
| this.info = info; |
| } |
| |
| public CommentLinkProcessor getCommentLinkProcessor() { |
| if (commentLinkProcessor == null) { |
| commentLinkProcessor = new CommentLinkProcessor(info.commentlinks()); |
| } |
| return commentLinkProcessor; |
| } |
| |
| public ThemeInfo getTheme() { |
| return info.theme(); |
| } |
| } |
| |
| public static void get(Project.NameKey name, AsyncCallback<Entry> cb) { |
| instance.getImpl(name, cb); |
| } |
| |
| private final LinkedHashMap<String, Entry> cache; |
| |
| protected ConfigInfoCache() { |
| cache = new LinkedHashMap<String, Entry>(LIMIT) { |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| protected boolean removeEldestEntry( |
| Map.Entry<String, ConfigInfoCache.Entry> e) { |
| return size() > LIMIT; |
| } |
| }; |
| } |
| |
| private void getImpl(final Project.NameKey name, |
| final AsyncCallback<Entry> cb) { |
| Entry e = cache.get(name.get()); |
| if (e != null) { |
| cb.onSuccess(e); |
| return; |
| } |
| ProjectApi.config(name).get(new AsyncCallback<ConfigInfo>() { |
| @Override |
| public void onSuccess(ConfigInfo result) { |
| Entry e = new Entry(result); |
| cache.put(name.get(), e); |
| cb.onSuccess(e); |
| } |
| |
| @Override |
| public void onFailure(Throwable caught) { |
| cb.onFailure(caught); |
| } |
| }); |
| } |
| } |