1 package org.apache.maven.model.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 org.apache.maven.model.Repository;
23 import org.apache.maven.model.building.ModelSource;
24
25 /**
26 * Resolves a POM from its coordinates. During the build process, the
27 * {@link org.apache.maven.model.building.ModelBuilder} will add any relevant repositories to the model resolver. In
28 * other words, the model resolver is stateful and should not be reused across multiple model building requests.
29 *
30 * @author Benjamin Bentmann
31 */
32 public interface ModelResolver
33 {
34
35 /**
36 * Tries to resolve the POM for the specified coordinates.
37 *
38 * @param groupId The group identifier of the POM, must not be {@code null}.
39 * @param artifactId The artifact identifier of the POM, must not be {@code null}.
40 * @param version The version of the POM, must not be {@code null}.
41 * @return The source of the requested POM, never {@code null}.
42 * @throws UnresolvableModelException If the POM could not be resolved from any configured repository.
43 */
44 ModelSource resolveModel( String groupId, String artifactId, String version )
45 throws UnresolvableModelException;
46
47 /**
48 * Adds a repository to use for subsequent resolution requests. The order in which repositories are added matters,
49 * repositories that were added first should also be searched first. When multiple repositories with the same
50 * identifier are added, only the first repository being added will be used.
51 *
52 * @param repository The repository to add to the internal search chain, must not be {@code null}.
53 * @throws InvalidRepositoryException If the repository could not be added (e.g. due to invalid URL or layout).
54 */
55 void addRepository( Repository repository )
56 throws InvalidRepositoryException;
57
58 /**
59 * Clones this resolver for usage in a forked resolution process. In general, implementors need not provide a deep
60 * clone. The only requirement is that invocations of {@link #addRepository(Repository)} on the clone do not affect
61 * the state of the original resolver and vice versa.
62 *
63 * @return The cloned resolver, never {@code null}.
64 */
65 ModelResolver newCopy();
66
67 }