1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.artifact.resolver;
20
21 import java.util.ArrayList;
22 import java.util.Collection;
23 import java.util.List;
24 import javax.inject.Named;
25 import javax.inject.Singleton;
26
27 /**
28 * @author Benjamin Bentmann
29 */
30 @Named
31 @Singleton
32 public class DefaultResolutionErrorHandler implements ResolutionErrorHandler {
33
34 public void throwErrors(ArtifactResolutionRequest request, ArtifactResolutionResult result)
35 throws ArtifactResolutionException {
36 // Metadata cannot be found
37
38 if (result.hasMetadataResolutionExceptions()) {
39 throw result.getMetadataResolutionException(0);
40 }
41
42 // Metadata cannot be retrieved
43
44 // Cyclic Dependency Error
45
46 if (result.hasCircularDependencyExceptions()) {
47 throw result.getCircularDependencyException(0);
48 }
49
50 // Version Range Violation
51
52 if (result.hasVersionRangeViolations()) {
53 throw result.getVersionRangeViolation(0);
54 }
55
56 // Transfer Error
57
58 if (result.hasErrorArtifactExceptions()) {
59 throw result.getErrorArtifactExceptions().get(0);
60 }
61
62 if (result.hasMissingArtifacts()) {
63 throw new MultipleArtifactsNotFoundException(
64 request.getArtifact(),
65 toList(result.getArtifacts()),
66 result.getMissingArtifacts(),
67 request.getRemoteRepositories());
68 }
69
70 // this should never happen since we checked all possible error sources before but better be sure
71 if (result.hasExceptions()) {
72 throw new ArtifactResolutionException(
73 "Unknown error during artifact resolution, " + request + ", " + result.getExceptions(),
74 request.getArtifact(),
75 request.getRemoteRepositories());
76 }
77 }
78
79 private static <T> List<T> toList(Collection<T> items) {
80 return (items != null) ? new ArrayList<>(items) : null;
81 }
82 }