diff options
Diffstat (limited to 'appc-common/src/main/java/org/openecomp/appc/cache/impl/LRUCache.java')
-rw-r--r-- | appc-common/src/main/java/org/openecomp/appc/cache/impl/LRUCache.java | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/appc-common/src/main/java/org/openecomp/appc/cache/impl/LRUCache.java b/appc-common/src/main/java/org/openecomp/appc/cache/impl/LRUCache.java new file mode 100644 index 000000000..0e8ba7308 --- /dev/null +++ b/appc-common/src/main/java/org/openecomp/appc/cache/impl/LRUCache.java @@ -0,0 +1,51 @@ +/*- + * ============LICENSE_START======================================================= + * openECOMP : APP-C + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights + * reserved. + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ + +package org.openecomp.appc.cache.impl; + +import java.util.LinkedHashMap; +import java.util.Map; + +import org.openecomp.appc.cache.CacheStrategy; + +public class LRUCache<K,V> implements CacheStrategy<K,V> { + + private Map<K,V> map; + + LRUCache(final Integer capacity){ + map = new LinkedHashMap<K,V>(capacity, 0.75F, true){ + @Override + protected boolean removeEldestEntry(Map.Entry<K, V> eldest){ + return size() > capacity; + } + }; + } + + @Override + public V getObject(K key) { + return map.get(key); + } + + @Override + public void putObject(K key, V value) { + map.put(key,value); + } +} |