001package org.apache.maven.artifact.versioning; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022/** 023 * Describes a restriction in versioning. 024 * 025 * @author <a href="mailto:brett@apache.org">Brett Porter</a> 026 */ 027public class Restriction 028{ 029 private final ArtifactVersion lowerBound; 030 031 private final boolean lowerBoundInclusive; 032 033 private final ArtifactVersion upperBound; 034 035 private final boolean upperBoundInclusive; 036 037 public static final Restriction EVERYTHING = new Restriction( null, false, null, false ); 038 039 public Restriction( ArtifactVersion lowerBound, boolean lowerBoundInclusive, ArtifactVersion upperBound, 040 boolean upperBoundInclusive ) 041 { 042 this.lowerBound = lowerBound; 043 this.lowerBoundInclusive = lowerBoundInclusive; 044 this.upperBound = upperBound; 045 this.upperBoundInclusive = upperBoundInclusive; 046 } 047 048 public ArtifactVersion getLowerBound() 049 { 050 return lowerBound; 051 } 052 053 public boolean isLowerBoundInclusive() 054 { 055 return lowerBoundInclusive; 056 } 057 058 public ArtifactVersion getUpperBound() 059 { 060 return upperBound; 061 } 062 063 public boolean isUpperBoundInclusive() 064 { 065 return upperBoundInclusive; 066 } 067 068 public boolean containsVersion( ArtifactVersion version ) 069 { 070 if ( lowerBound != null ) 071 { 072 int comparison = lowerBound.compareTo( version ); 073 074 if ( ( comparison == 0 ) && !lowerBoundInclusive ) 075 { 076 return false; 077 } 078 if ( comparison > 0 ) 079 { 080 return false; 081 } 082 } 083 if ( upperBound != null ) 084 { 085 int comparison = upperBound.compareTo( version ); 086 087 if ( ( comparison == 0 ) && !upperBoundInclusive ) 088 { 089 return false; 090 } 091 if ( comparison < 0 ) 092 { 093 return false; 094 } 095 } 096 097 return true; 098 } 099 100 @Override 101 public int hashCode() 102 { 103 int result = 13; 104 105 if ( lowerBound == null ) 106 { 107 result += 1; 108 } 109 else 110 { 111 result += lowerBound.hashCode(); 112 } 113 114 result *= lowerBoundInclusive ? 1 : 2; 115 116 if ( upperBound == null ) 117 { 118 result -= 3; 119 } 120 else 121 { 122 result -= upperBound.hashCode(); 123 } 124 125 result *= upperBoundInclusive ? 2 : 3; 126 127 return result; 128 } 129 130 @Override 131 public boolean equals( Object other ) 132 { 133 if ( this == other ) 134 { 135 return true; 136 } 137 138 if ( !( other instanceof Restriction ) ) 139 { 140 return false; 141 } 142 143 Restriction restriction = (Restriction) other; 144 if ( lowerBound != null ) 145 { 146 if ( !lowerBound.equals( restriction.lowerBound ) ) 147 { 148 return false; 149 } 150 } 151 else if ( restriction.lowerBound != null ) 152 { 153 return false; 154 } 155 156 if ( lowerBoundInclusive != restriction.lowerBoundInclusive ) 157 { 158 return false; 159 } 160 161 if ( upperBound != null ) 162 { 163 if ( !upperBound.equals( restriction.upperBound ) ) 164 { 165 return false; 166 } 167 } 168 else if ( restriction.upperBound != null ) 169 { 170 return false; 171 } 172 173 return upperBoundInclusive == restriction.upperBoundInclusive; 174 175 } 176 177 public String toString() 178 { 179 StringBuilder buf = new StringBuilder(); 180 181 buf.append( isLowerBoundInclusive() ? "[" : "(" ); 182 if ( getLowerBound() != null ) 183 { 184 buf.append( getLowerBound().toString() ); 185 } 186 buf.append( "," ); 187 if ( getUpperBound() != null ) 188 { 189 buf.append( getUpperBound().toString() ); 190 } 191 buf.append( isUpperBoundInclusive() ? "]" : ")" ); 192 193 return buf.toString(); 194 } 195}