/*
* Copyright 2000-2015 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.diff.tools.util;
import com.intellij.util.containers.SLRUMap;
import com.intellij.util.containers.SoftValueHashMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class SoftHardCacheMap<K, V> {
@NotNull private final SLRUMap<K, V> mySLRUMap;
@NotNull private final SoftValueHashMap<K, V> mySoftLinkMap;
public SoftHardCacheMap(final int protectedQueueSize, final int probationalQueueSize) {
mySLRUMap = new SLRUMap<K, V>(protectedQueueSize, probationalQueueSize);
mySoftLinkMap = new SoftValueHashMap<K, V>();
}
@Nullable
public V get(@NotNull K key) {
V val = mySLRUMap.get(key);
if (val != null) return val;
val = mySoftLinkMap.get(key);
if (val != null) mySLRUMap.put(key, val);
return val;
}
public void put(@NotNull K key, @NotNull V value) {
mySLRUMap.put(key, value);
mySoftLinkMap.put(key, value);
}
public boolean remove(@NotNull K key) {
boolean remove1 = mySLRUMap.remove(key);
boolean remove2 = mySoftLinkMap.remove(key) != null;
return remove1 || remove2;
}
public void clear() {
mySLRUMap.clear();
mySoftLinkMap.clear();
}
}