| /* |
| * 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. |
| */ |
| package org.apache.felix.resolver; |
| |
| import org.osgi.resource.Requirement; |
| import org.osgi.service.resolver.ResolutionException; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| /** |
| * Resolution error. |
| * This class contains all the needed information to build the ResolutionException |
| * without the need to actually compute a user friendly message, which can be |
| * quite time consuming. |
| */ |
| public abstract class ResolutionError { |
| |
| public abstract String getMessage(); |
| |
| public Collection<Requirement> getUnresolvedRequirements() { |
| return Collections.emptyList(); |
| } |
| |
| public ResolutionException toException() { |
| return new ResolutionException(getMessage(), null, getUnresolvedRequirements()); |
| } |
| |
| @Override |
| public String toString() { |
| return getMessage(); |
| } |
| } |