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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *  http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.any23.extractor;
    19
    20  import java.io.OutputStreamWriter;
    21  import java.io.PrintStream;
    22  import java.io.PrintWriter;
    23  import java.nio.charset.StandardCharsets;
    24
    25  /**
    26   * Defines a specific exception raised during the metadata extraction phase.
    27   *
    28   * @author Michele Mostarda (michele.mostarda@gmail.com)
    29   */
    30  public class ExtractionException extends Exception {
    31
    32      private ExtractionResult extractionResult;
    33
    34      public ExtractionException(String message) {
    35          super(message);
    36      }
    37
    38      public ExtractionException(String message, Throwable cause) {
    39          super(message, cause);
    40      }
    41
    42      public ExtractionException(String message, Throwable cause, ExtractionResult er) {
    43          super(message, cause);
    44          extractionResult = er;
    45      }
    46
    47      @Override
    48      public void printStackTrace(PrintStream ps) {
    49          printExceptionResult(new PrintWriter(new OutputStreamWriter(ps, StandardCharsets.UTF_8), true));
    50          super.printStackTrace(ps);
    51      }
    52
    53      @Override
    54      public void printStackTrace(PrintWriter pw) {
    55          printExceptionResult(pw);
    56          super.printStackTrace(pw);
    57      }
    58
    59      private void printExceptionResult(PrintWriter ps) {
    60          if (extractionResult == null) {
    61              return;
    62          }
    63          ps.println();
    64          ps.println("------------ BEGIN Exception context ------------");
    65          ps.print(extractionResult.toString());
    66          ps.println("------------ END   Exception context ------------");
    67          ps.println();
    68          ps.flush();
    69      }
    70  }