| package org.apache.archiva.redback.components.cache; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| /** |
| * |
| * @author Olivier Lamy |
| */ |
| public abstract class AbstractCacheStatistics |
| implements CacheStatistics |
| { |
| |
| private long cacheHits; |
| |
| private long cacheMiss; |
| |
| public AbstractCacheStatistics() |
| { |
| this.cacheHits = 0; |
| this.cacheMiss = 0; |
| } |
| |
| public long getCacheHits() |
| { |
| return this.cacheHits; |
| } |
| |
| public long getCacheMiss() |
| { |
| return this.cacheMiss; |
| } |
| |
| public double getCacheHitRate() |
| { |
| return cacheHits == 0 && cacheMiss == 0 ? 0 : (double) cacheHits / (double) ( cacheHits + cacheMiss ); |
| } |
| |
| public abstract long getSize(); |
| |
| public void hit() |
| { |
| this.cacheHits++; |
| } |
| |
| public void miss() |
| { |
| this.cacheMiss++; |
| } |
| |
| public void clear() |
| { |
| this.cacheHits = 0; |
| this.cacheMiss = 0; |
| } |
| |
| /** |
| * @return default implementation return 0 |
| */ |
| public long getInMemorySize() |
| { |
| return 0; |
| } |
| } |