001/* 002 * Copyright 2002-2017 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.cache.support; 018 019import org.springframework.cache.Cache.ValueWrapper; 020import org.springframework.lang.Nullable; 021 022/** 023 * Straightforward implementation of {@link org.springframework.cache.Cache.ValueWrapper}, 024 * simply holding the value as given at construction and returning it from {@link #get()}. 025 * 026 * @author Costin Leau 027 * @since 3.1 028 */ 029public class SimpleValueWrapper implements ValueWrapper { 030 031 @Nullable 032 private final Object value; 033 034 035 /** 036 * Create a new SimpleValueWrapper instance for exposing the given value. 037 * @param value the value to expose (may be {@code null}) 038 */ 039 public SimpleValueWrapper(@Nullable Object value) { 040 this.value = value; 041 } 042 043 044 /** 045 * Simply returns the value as given at construction time. 046 */ 047 @Override 048 @Nullable 049 public Object get() { 050 return this.value; 051 } 052 053}