package org.apache.cassandra.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.
*
*/
import java.util.Set;
/**
* This is similar to the Map interface, but requires maintaining a given capacity
* and does not require put or remove to return values, which lets SerializingCache
* be more efficient by avoiding deserialize except on get.
*/
public interface ICache<K, V>
{
public int capacity();
public void setCapacity(int capacity);
public void put(K key, V value);
public V get(K key);
public void remove(K key);
public int size();
public void clear();
public Set<K> keySet();
/**
* @return true if the cache implementation inherently copies the cached values; otherwise,
* the caller should copy manually before caching shared values like Thrift ByteBuffers.
*/
public boolean isPutCopying();
}