org.apache.hadoop.mapreduce.lib.input.InvalidInputException.java Source code

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Here is the source code for org.apache.hadoop.mapreduce.lib.input.InvalidInputException.java

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/**
 * 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.hadoop.mapreduce.lib.input;

import java.io.IOException;
import java.util.List;
import java.util.Iterator;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;

/**
 * This class wraps a list of problems with the input, so that the user
 * can get a list of problems together instead of finding and fixing them one 
 * by one.
 */
@InterfaceAudience.Public
@InterfaceStability.Stable
public class InvalidInputException extends IOException {
    private static final long serialVersionUID = -380668190578456802L;
    private List<IOException> problems;

    /**
     * Create the exception with the given list.
     * @param probs the list of problems to report. this list is not copied.
     */
    public InvalidInputException(List<IOException> probs) {
        problems = probs;
    }

    /**
     * Get the complete list of the problems reported.
     * @return the list of problems, which must not be modified
     */
    public List<IOException> getProblems() {
        return problems;
    }

    /**
     * Get a summary message of the problems found.
     * @return the concatenated messages from all of the problems.
     */
    public String getMessage() {
        StringBuffer result = new StringBuffer();
        Iterator<IOException> itr = problems.iterator();
        while (itr.hasNext()) {
            result.append(itr.next().getMessage());
            if (itr.hasNext()) {
                result.append("\n");
            }
        }
        return result.toString();
    }
}