org.springframework.cache.support.NoOpCache Maven / Gradle / Ivy
/*
* Copyright 2002-2016 the original author or authors.
*
* 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 org.springframework.cache.support;
import java.util.concurrent.Callable;
import org.springframework.cache.Cache;
/**
* A no operation {@link Cache} implementation suitable
* for disabling caching.
*
* Will simply accept any items into the cache not actually storing them.
*
* @author Costin Leau
* @author Stephane Nicoll
* @since 4.3.4
*/
public class NoOpCache implements Cache {
private final String name;
/**
* Create a {@link NoOpCache} instance with the specified name
* @param name the name of the cache
*/
public NoOpCache(String name) {
this.name = name;
}
@Override
public void clear() {
}
@Override
public void evict(Object key) {
}
@Override
public ValueWrapper get(Object key) {
return null;
}
@Override
public T get(Object key, Class type) {
return null;
}
@Override
public T get(Object key, Callable valueLoader) {
try {
return valueLoader.call();
}
catch (Exception ex) {
throw new ValueRetrievalException(key, valueLoader, ex);
}
}
@Override
public String getName() {
return this.name;
}
@Override
public Object getNativeCache() {
return null;
}
@Override
public void put(Object key, Object value) {
}
@Override
public ValueWrapper putIfAbsent(Object key, Object value) {
return null;
}
}