| package org.apache.commons.jcs3.engine.memory; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.LinkedHashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.commons.jcs3.engine.behavior.ICacheElement; |
| import org.apache.commons.jcs3.engine.behavior.ICompositeCacheAttributes; |
| import org.apache.commons.jcs3.engine.control.CompositeCache; |
| import org.apache.commons.jcs3.engine.memory.behavior.IMemoryCache; |
| import org.apache.commons.jcs3.engine.stats.behavior.IStats; |
| |
| /** |
| * Mock implementation of a memory cache for testing things like the memory shrinker. |
| * <p> |
| * @author Aaron Smuts |
| */ |
| public class MockMemoryCache<K, V> |
| implements IMemoryCache<K, V> |
| { |
| /** Config */ |
| private ICompositeCacheAttributes cacheAttr; |
| |
| /** Internal map */ |
| private final HashMap<K, ICacheElement<K, V>> map = new HashMap<>(); |
| |
| /** The number of times waterfall was called. */ |
| public int waterfallCallCount; |
| |
| /** The number passed to the last call of free elements. */ |
| public int lastNumberOfFreedElements; |
| |
| /** |
| * Does nothing |
| * @param cache |
| */ |
| @Override |
| public void initialize( final CompositeCache<K, V> cache ) |
| { |
| // nothing |
| } |
| |
| /** |
| * Destroy the memory cache |
| * <p> |
| * @throws IOException |
| */ |
| @Override |
| public void dispose() |
| throws IOException |
| { |
| // nothing |
| } |
| |
| /** @return size */ |
| @Override |
| public int getSize() |
| { |
| return map.size(); |
| } |
| |
| /** @return stats */ |
| @Override |
| public IStats getStatistics() |
| { |
| return null; |
| } |
| |
| /** |
| * @return map.keySet().toArray( */ |
| @Override |
| public Set<K> getKeySet() |
| { |
| return new LinkedHashSet<>(map.keySet()); |
| } |
| |
| /** |
| * @param key |
| * @return map.remove( key ) != null |
| * @throws IOException |
| */ |
| @Override |
| public boolean remove( final K key ) |
| throws IOException |
| { |
| return map.remove( key ) != null; |
| } |
| |
| /** |
| * @throws IOException |
| */ |
| @Override |
| public void removeAll() |
| throws IOException |
| { |
| map.clear(); |
| } |
| |
| /** |
| * @param key |
| * @return (ICacheElement) map.get( key ) |
| * @throws IOException |
| */ |
| @Override |
| public ICacheElement<K, V> get( final K key ) |
| throws IOException |
| { |
| return map.get( key ); |
| } |
| |
| /** |
| * @param keys |
| * @return elements |
| * @throws IOException |
| */ |
| @Override |
| public Map<K, ICacheElement<K, V>> getMultiple(final Set<K> keys) |
| throws IOException |
| { |
| final Map<K, ICacheElement<K, V>> elements = new HashMap<>(); |
| |
| if ( keys != null && !keys.isEmpty() ) |
| { |
| final Iterator<K> iterator = keys.iterator(); |
| |
| while ( iterator.hasNext() ) |
| { |
| final K key = iterator.next(); |
| |
| final ICacheElement<K, V> element = get( key ); |
| |
| if ( element != null ) |
| { |
| elements.put( key, element ); |
| } |
| } |
| } |
| |
| return elements; |
| } |
| |
| /** |
| * @param key |
| * @return (ICacheElement) map.get( key ) |
| * @throws IOException |
| */ |
| @Override |
| public ICacheElement<K, V> getQuiet( final K key ) |
| throws IOException |
| { |
| return map.get( key ); |
| } |
| |
| /** |
| * @param ce |
| * @throws IOException |
| */ |
| @Override |
| public void waterfal( final ICacheElement<K, V> ce ) |
| throws IOException |
| { |
| waterfallCallCount++; |
| } |
| |
| /** |
| * @param ce |
| * @throws IOException |
| */ |
| @Override |
| public void update( final ICacheElement<K, V> ce ) |
| throws IOException |
| { |
| if ( ce != null ) |
| { |
| map.put( ce.getKey(), ce ); |
| } |
| } |
| |
| /** |
| * @return ICompositeCacheAttributes |
| */ |
| @Override |
| public ICompositeCacheAttributes getCacheAttributes() |
| { |
| return cacheAttr; |
| } |
| |
| /** |
| * @param cattr |
| */ |
| @Override |
| public void setCacheAttributes( final ICompositeCacheAttributes cattr ) |
| { |
| this.cacheAttr = cattr; |
| } |
| |
| /** @return null */ |
| @Override |
| public CompositeCache<K, V> getCompositeCache() |
| { |
| return null; |
| } |
| |
| /** |
| * @param group |
| * @return null |
| */ |
| public Set<K> getGroupKeys( final String group ) |
| { |
| return null; |
| } |
| |
| /** |
| * @return null |
| */ |
| public Set<String> getGroupNames() |
| { |
| return null; |
| } |
| |
| /** |
| * @param numberToFree |
| * @return 0 |
| * @throws IOException |
| */ |
| @Override |
| public int freeElements( final int numberToFree ) |
| throws IOException |
| { |
| lastNumberOfFreedElements = numberToFree; |
| return 0; |
| } |
| } |