| package org.eclipse.aether.collection; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.LinkedHashSet; |
| import java.util.List; |
| |
| import org.eclipse.aether.RepositoryException; |
| import org.eclipse.aether.artifact.Artifact; |
| import org.eclipse.aether.graph.DependencyNode; |
| import org.eclipse.aether.version.VersionConstraint; |
| |
| /** |
| * Thrown in case of an unsolvable conflict between different version constraints for a dependency. |
| */ |
| public class UnsolvableVersionConflictException |
| extends RepositoryException |
| { |
| |
| private final transient Collection<String> versions; |
| |
| private final transient Collection<? extends List<? extends DependencyNode>> paths; |
| |
| /** |
| * Creates a new exception with the specified paths to conflicting nodes in the dependency graph. |
| * |
| * @param paths The paths to the dependency nodes that participate in the version conflict, may be {@code null}. |
| */ |
| public UnsolvableVersionConflictException( Collection<? extends List<? extends DependencyNode>> paths ) |
| { |
| super( "Could not resolve version conflict among " + toPaths( paths ) ); |
| if ( paths == null ) |
| { |
| this.paths = Collections.emptyList(); |
| this.versions = Collections.emptyList(); |
| } |
| else |
| { |
| this.paths = paths; |
| this.versions = new LinkedHashSet<String>(); |
| for ( List<? extends DependencyNode> path : paths ) |
| { |
| VersionConstraint constraint = path.get( path.size() - 1 ).getVersionConstraint(); |
| if ( constraint != null && constraint.getRange() != null ) |
| { |
| versions.add( constraint.toString() ); |
| } |
| } |
| } |
| } |
| |
| private static String toPaths( Collection<? extends List<? extends DependencyNode>> paths ) |
| { |
| String result = ""; |
| |
| if ( paths != null ) |
| { |
| Collection<String> strings = new LinkedHashSet<String>(); |
| |
| for ( List<? extends DependencyNode> path : paths ) |
| { |
| strings.add( toPath( path ) ); |
| } |
| |
| result = strings.toString(); |
| } |
| |
| return result; |
| } |
| |
| private static String toPath( List<? extends DependencyNode> path ) |
| { |
| StringBuilder buffer = new StringBuilder( 256 ); |
| |
| for ( Iterator<? extends DependencyNode> it = path.iterator(); it.hasNext(); ) |
| { |
| DependencyNode node = it.next(); |
| if ( node.getDependency() == null ) |
| { |
| continue; |
| } |
| |
| Artifact artifact = node.getDependency().getArtifact(); |
| buffer.append( artifact.getGroupId() ); |
| buffer.append( ':' ).append( artifact.getArtifactId() ); |
| buffer.append( ':' ).append( artifact.getExtension() ); |
| if ( artifact.getClassifier().length() > 0 ) |
| { |
| buffer.append( ':' ).append( artifact.getClassifier() ); |
| } |
| buffer.append( ':' ).append( node.getVersionConstraint() ); |
| |
| if ( it.hasNext() ) |
| { |
| buffer.append( " -> " ); |
| } |
| } |
| |
| return buffer.toString(); |
| } |
| |
| /** |
| * Gets the paths leading to the conflicting dependencies. |
| * |
| * @return The (read-only) paths leading to the conflicting dependencies, never {@code null}. |
| */ |
| public Collection<? extends List<? extends DependencyNode>> getPaths() |
| { |
| return paths; |
| } |
| |
| /** |
| * Gets the conflicting version constraints of the dependency. |
| * |
| * @return The (read-only) conflicting version constraints, never {@code null}. |
| */ |
| public Collection<String> getVersions() |
| { |
| return versions; |
| } |
| |
| } |