001/* 002 * Copyright 2002-2018 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.core; 018 019import org.springframework.util.Assert; 020 021/** 022 * {@link InheritableThreadLocal} subclass that exposes a specified name 023 * as {@link #toString()} result (allowing for introspection). 024 * 025 * @author Juergen Hoeller 026 * @since 2.5.2 027 * @param <T> the value type 028 * @see NamedThreadLocal 029 */ 030public class NamedInheritableThreadLocal<T> extends InheritableThreadLocal<T> { 031 032 private final String name; 033 034 035 /** 036 * Create a new NamedInheritableThreadLocal with the given name. 037 * @param name a descriptive name for this ThreadLocal 038 */ 039 public NamedInheritableThreadLocal(String name) { 040 Assert.hasText(name, "Name must not be empty"); 041 this.name = name; 042 } 043 044 @Override 045 public String toString() { 046 return this.name; 047 } 048 049}