| /* |
| * 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.maven.settings.building; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Signals one ore more errors during settings building. The settings builder tries to collect as many problems as |
| * possible before eventually failing to provide callers with rich error information. Use {@link #getProblems()} to |
| * query the details of the failure. |
| * |
| */ |
| public class SettingsBuildingException extends Exception { |
| |
| private final List<SettingsProblem> problems; |
| |
| /** |
| * Creates a new exception with the specified problems. |
| * |
| * @param problems The problems that cause this exception, may be {@code null}. |
| */ |
| public SettingsBuildingException(List<SettingsProblem> problems) { |
| super(toMessage(problems)); |
| |
| this.problems = new ArrayList<>(); |
| if (problems != null) { |
| this.problems.addAll(problems); |
| } |
| } |
| |
| /** |
| * Gets the problems that caused this exception. |
| * |
| * @return The problems that caused this exception, never {@code null}. |
| */ |
| public List<SettingsProblem> getProblems() { |
| return problems; |
| } |
| |
| private static String toMessage(List<SettingsProblem> problems) { |
| StringWriter buffer = new StringWriter(1024); |
| |
| PrintWriter writer = new PrintWriter(buffer); |
| |
| writer.print(problems.size()); |
| writer.print((problems.size() == 1) ? " problem was " : " problems were "); |
| writer.print("encountered while building the effective settings"); |
| writer.println(); |
| |
| for (SettingsProblem problem : problems) { |
| writer.print("["); |
| writer.print(problem.getSeverity()); |
| writer.print("] "); |
| writer.print(problem.getMessage()); |
| String location = problem.getLocation(); |
| if (!location.isEmpty()) { |
| writer.print(" @ "); |
| writer.println(location); |
| } |
| } |
| |
| return buffer.toString(); |
| } |
| } |