| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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.intellij.vcs.log.data; |
| |
| import com.intellij.util.containers.SLRUMap; |
| import com.intellij.vcs.log.Hash; |
| import com.intellij.vcs.log.VcsShortCommitDetails; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.awt.*; |
| |
| /** |
| * <p>The cache of commit details.</p> |
| * <p>It is not actually a cache, but rather a limited map, because there is intentionally no way to get the non-cached value if it was not |
| * found in the cache: such functionality is implemented by the {@link DataGetter} which is able to receive |
| * non-cached details more efficiently, in a batch.</p> |
| * <p>Any access to the Cache MUST be performed from the EDT thread.</p> |
| * |
| * @author Kirill Likhodedov |
| */ |
| class VcsCommitCache<T extends VcsShortCommitDetails> { |
| |
| private final SLRUMap<Hash, T> myCache = new SLRUMap<Hash, T>(5000, 5000); |
| |
| public void put(@NotNull Hash hash, @NotNull T commit) { |
| assert EventQueue.isDispatchThread(); |
| myCache.put(hash, commit); |
| } |
| |
| public boolean isKeyCached(@NotNull Hash hash) { |
| assert EventQueue.isDispatchThread(); |
| return myCache.get(hash) != null; |
| } |
| |
| @Nullable |
| public T get(@NotNull Hash hash) { |
| assert EventQueue.isDispatchThread(); |
| return myCache.get(hash); |
| } |
| |
| public void remove(@NotNull Hash hash) { |
| myCache.remove(hash); |
| } |
| |
| } |