1 package org.eclipse.aether.resolution;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.ArrayList;
23 import java.util.Collections;
24 import java.util.List;
25
26 import org.eclipse.aether.RepositorySystem;
27 import org.eclipse.aether.RequestTrace;
28 import org.eclipse.aether.artifact.Artifact;
29 import org.eclipse.aether.repository.RemoteRepository;
30
31 /**
32 * A request to resolve a metaversion.
33 *
34 * @see RepositorySystem#resolveVersion(org.eclipse.aether.RepositorySystemSession, VersionRequest)
35 */
36 public final class VersionRequest
37 {
38
39 private Artifact artifact;
40
41 private List<RemoteRepository> repositories = Collections.emptyList();
42
43 private String context = "";
44
45 private RequestTrace trace;
46
47 /**
48 * Creates an uninitialized request.
49 */
50 public VersionRequest()
51 {
52 // enables default constructor
53 }
54
55 /**
56 * Creates a request with the specified properties.
57 *
58 * @param artifact The artifact whose (meta-)version should be resolved, may be {@code null}.
59 * @param repositories The repositories to resolve the version from, may be {@code null}.
60 * @param context The context in which this request is made, may be {@code null}.
61 */
62 public VersionRequest( Artifact artifact, List<RemoteRepository> repositories, String context )
63 {
64 setArtifact( artifact );
65 setRepositories( repositories );
66 setRequestContext( context );
67 }
68
69 /**
70 * Gets the artifact whose (meta-)version shall be resolved.
71 *
72 * @return The artifact or {@code null} if not set.
73 */
74 public Artifact getArtifact()
75 {
76 return artifact;
77 }
78
79 /**
80 * Sets the artifact whose (meta-)version shall be resolved.
81 *
82 * @param artifact The artifact, may be {@code null}.
83 * @return This request for chaining, never {@code null}.
84 */
85 public VersionRequest setArtifact( Artifact artifact )
86 {
87 this.artifact = artifact;
88 return this;
89 }
90
91 /**
92 * Gets the repositories to resolve the version from.
93 *
94 * @return The repositories, never {@code null}.
95 */
96 public List<RemoteRepository> getRepositories()
97 {
98 return repositories;
99 }
100
101 /**
102 * Sets the repositories to resolve the version from.
103 *
104 * @param repositories The repositories, may be {@code null}.
105 * @return This request for chaining, never {@code null}.
106 */
107 public VersionRequest setRepositories( List<RemoteRepository> repositories )
108 {
109 if ( repositories == null )
110 {
111 this.repositories = Collections.emptyList();
112 }
113 else
114 {
115 this.repositories = repositories;
116 }
117 return this;
118 }
119
120 /**
121 * Adds the specified repository for the resolution.
122 *
123 * @param repository The repository to add, may be {@code null}.
124 * @return This request for chaining, never {@code null}.
125 */
126 public VersionRequest addRepository( RemoteRepository repository )
127 {
128 if ( repository != null )
129 {
130 if ( this.repositories.isEmpty() )
131 {
132 this.repositories = new ArrayList<>();
133 }
134 this.repositories.add( repository );
135 }
136 return this;
137 }
138
139 /**
140 * Gets the context in which this request is made.
141 *
142 * @return The context, never {@code null}.
143 */
144 public String getRequestContext()
145 {
146 return context;
147 }
148
149 /**
150 * Sets the context in which this request is made.
151 *
152 * @param context The context, may be {@code null}.
153 * @return This request for chaining, never {@code null}.
154 */
155 public VersionRequest setRequestContext( String context )
156 {
157 this.context = ( context != null ) ? context : "";
158 return this;
159 }
160
161 /**
162 * Gets the trace information that describes the higher level request/operation in which this request is issued.
163 *
164 * @return The trace information about the higher level operation or {@code null} if none.
165 */
166 public RequestTrace getTrace()
167 {
168 return trace;
169 }
170
171 /**
172 * Sets the trace information that describes the higher level request/operation in which this request is issued.
173 *
174 * @param trace The trace information about the higher level operation, may be {@code null}.
175 * @return This request for chaining, never {@code null}.
176 */
177 public VersionRequest setTrace( RequestTrace trace )
178 {
179 this.trace = trace;
180 return this;
181 }
182
183 @Override
184 public String toString()
185 {
186 return getArtifact() + " < " + getRepositories();
187 }
188
189 }