[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.mapreduce.lib.input; |
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| 19 | |
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| 20 | import java.io.IOException; |
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| 21 | import java.util.List; |
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| 22 | import java.util.Iterator; |
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| 23 | |
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| 24 | /** |
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| 25 | * This class wraps a list of problems with the input, so that the user |
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| 26 | * can get a list of problems together instead of finding and fixing them one |
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| 27 | * by one. |
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| 28 | */ |
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| 29 | public class InvalidInputException extends IOException { |
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| 30 | private static final long serialVersionUID = -380668190578456802L; |
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| 31 | private List<IOException> problems; |
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| 32 | |
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| 33 | /** |
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| 34 | * Create the exception with the given list. |
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| 35 | * @param probs the list of problems to report. this list is not copied. |
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| 36 | */ |
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| 37 | public InvalidInputException(List<IOException> probs) { |
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| 38 | problems = probs; |
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| 39 | } |
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| 40 | |
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| 41 | /** |
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| 42 | * Get the complete list of the problems reported. |
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| 43 | * @return the list of problems, which must not be modified |
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| 44 | */ |
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| 45 | public List<IOException> getProblems() { |
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| 46 | return problems; |
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| 47 | } |
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| 48 | |
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| 49 | /** |
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| 50 | * Get a summary message of the problems found. |
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| 51 | * @return the concatenated messages from all of the problems. |
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| 52 | */ |
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| 53 | public String getMessage() { |
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| 54 | StringBuffer result = new StringBuffer(); |
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| 55 | Iterator<IOException> itr = problems.iterator(); |
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| 56 | while(itr.hasNext()) { |
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| 57 | result.append(itr.next().getMessage()); |
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| 58 | if (itr.hasNext()) { |
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| 59 | result.append("\n"); |
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| 60 | } |
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| 61 | } |
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| 62 | return result.toString(); |
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| 63 | } |
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| 64 | } |
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