001// *************************************************************************************************************************** 002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * 003// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file * 004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance * 005// * with the License. You may obtain a copy of the License at * 006// * * 007// * http://www.apache.org/licenses/LICENSE-2.0 * 008// * * 009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an * 010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the * 011// * specific language governing permissions and limitations under the License. * 012// *************************************************************************************************************************** 013package org.apache.juneau.http; 014 015/** 016 * Represents a validator value. 017 * 018 * <p> 019 * <h5 class='figure'>Example</h5> 020 * <p class='bcode w800'> 021 * ETag: "123456789" – A strong ETag validator 022 * ETag: W/"123456789" – A weak ETag validator 023 * </p> 024 * 025 * <ul class='seealso'> 026 * <li class='extlink'>{@doc RFC2616} 027 * </ul> 028 */ 029public class EntityValidator { 030 031 private final String value; 032 private final boolean isWeak; 033 034 /** 035 * Constructor. 036 * 037 * @param value The validator string value. 038 */ 039 protected EntityValidator(String value) { 040 value = value.trim(); 041 isWeak = value.startsWith("W/"); 042 if (isWeak) 043 value = value.substring(2); 044 if (value.length() > 1 && value.charAt(0) == '"' && value.charAt(value.length()-1) == '"') 045 value = value.substring(1, value.length()-1); 046 this.value = value; 047 } 048 049 /** 050 * Returns the validator value stripped of quotes and weak tag. 051 * 052 * @return The validator value. 053 */ 054 public String asString() { 055 return value; 056 } 057 058 /** 059 * Returns <jk>true</jk> if the weak flag is present in the value. 060 * 061 * @return <jk>true</jk> if the weak flag is present in the value. 062 */ 063 public boolean isWeak() { 064 return isWeak; 065 } 066 067 /** 068 * Returns <jk>true</jk> if the validator string value is <c>*</c>. 069 * 070 * @return <jk>true</jk> if the validator string value is <c>*</c>. 071 */ 072 public boolean isAny() { 073 return "*".equals(value); 074 } 075 076 @Override 077 public String toString() { 078 return (isWeak ? "W/" : "") + (isAny() ? "*" : ('"' + value + '"')); 079 } 080}