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 javax.inject.Named;
22 import javax.inject.Singleton;
23
24 import java.util.ArrayList;
25 import java.util.Collection;
26 import java.util.List;
27
28 /**
29 * @author Benjamin Bentmann
30 */
31 @Named
32 @Singleton
33 public class DefaultResolutionErrorHandler implements ResolutionErrorHandler {
34
35 public void throwErrors(ArtifactResolutionRequest request, ArtifactResolutionResult result)
36 throws ArtifactResolutionException {
37 // Metadata cannot be found
38
39 if (result.hasMetadataResolutionExceptions()) {
40 throw result.getMetadataResolutionException(0);
41 }
42
43 // Metadata cannot be retrieved
44
45 // Cyclic Dependency Error
46
47 if (result.hasCircularDependencyExceptions()) {
48 throw result.getCircularDependencyException(0);
49 }
50
51 // Version Range Violation
52
53 if (result.hasVersionRangeViolations()) {
54 throw result.getVersionRangeViolation(0);
55 }
56
57 // Transfer Error
58
59 if (result.hasErrorArtifactExceptions()) {
60 throw result.getErrorArtifactExceptions().get(0);
61 }
62
63 if (result.hasMissingArtifacts()) {
64 throw new MultipleArtifactsNotFoundException(
65 request.getArtifact(),
66 toList(result.getArtifacts()),
67 result.getMissingArtifacts(),
68 request.getRemoteRepositories());
69 }
70
71 // this should never happen since we checked all possible error sources before but better be sure
72 if (result.hasExceptions()) {
73 throw new ArtifactResolutionException(
74 "Unknown error during artifact resolution, " + request + ", " + result.getExceptions(),
75 request.getArtifact(),
76 request.getRemoteRepositories());
77 }
78 }
79
80 private static <T> List<T> toList(Collection<T> items) {
81 return (items != null) ? new ArrayList<>(items) : null;
82 }
83 }