001 package 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 */
027 public 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 }