org.glassfish.jersey.internal.guava.GenericMapMaker Maven / Gradle / Ivy
/*
* Copyright (C) 2010 The Guava 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.glassfish.jersey.internal.guava;
/**
* A class exactly like {@link MapMaker}, except restricted in the types of maps it can build.
* For the most part, you should probably just ignore the existence of this class.
*
* @param the base type for all key types of maps built by this map maker
* @param the base type for all value types of maps built by this map maker
* @author Kevin Bourrillion
* @since 7.0
* @deprecated This class existed only to support the generic paramterization necessary for the
* caching functionality in {@code MapMaker}. That functionality has been moved to {@link
* CacheBuilder}, which is a properly generified class and thus needs no
* "Generic" equivalent; simple use {@code CacheBuilder} naturally. For general migration
* instructions, see the MapMaker Migration
* Guide.
*/
@Deprecated
abstract class GenericMapMaker {
@SuppressWarnings("unchecked")
// safe covariant cast
MapMaker.RemovalListener getRemovalListener() {
return (MapMaker.RemovalListener) GenericMapMaker.NullListener.INSTANCE;
}
enum NullListener implements MapMaker.RemovalListener