/**
* Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
*
* 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.onebusaway.container.cache;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Type annotation indicating how a particular object should be used to generate
* a cache key when used as an argument to a method annotated with
* {@link Cacheable}.
*
* @author bdferris
* @see Cacheable
* @see CacheableObjectKeyFactory
*/
@Retention(value = RetentionPolicy.RUNTIME)
@Target(value = ElementType.TYPE)
public @interface CacheableKey {
Class<? extends CacheableObjectKeyFactory> keyFactory();
}