Program: 127574
Project: 127574
Buggy source:
/** 
 * DOC yexiaowei Comment method "getExcelFileValue".
 * @param connection
 * @param value
 * @return
 */
private static Object getExcelFileValue(FileExcelConnection connection,String value){
  if (value.equals("String_Node_Str")) {
    if (isContextMode(connection,connection.getFilePath())) {
      return connection.getFilePath();
    }
 else {
      Path p=new Path(connection.getFilePath());
      return TalendQuoteUtils.addQuotes(p.toPortableString());
    }
  }
  if (value.equals("String_Node_Str")) {
    return TalendQuoteUtils.addQuotes(connection.getSheetName());
  }
  if (value.equals("String_Node_Str")) {
    return connection.isSelectAllSheets();
  }
  if (value.equals("String_Node_Str")) {
    if (isContextMode(connection,connection.getFirstColumn())) {
      return connection.getFirstColumn();
    }
 else {
      if (isPerlProject()) {
        return TalendQuoteUtils.addQuotes(connection.getFirstColumn());
      }
 else {
        return connection.getFirstColumn();
      }
    }
  }
  if (value.equals("String_Node_Str")) {
    if (isContextMode(connection,connection.getLastColumn())) {
      return connection.getLastColumn();
    }
 else {
      if (isPerlProject()) {
        if (connection.getLastColumn() != null && !connection.getLastColumn().equals("String_Node_Str")) {
          return TalendQuoteUtils.addQuotes(connection.getLastColumn());
        }
      }
 else {
        return connection.getLastColumn();
      }
    }
  }
  if (value.equals("String_Node_Str")) {
    return connection.isAdvancedSpearator();
  }
  if (value.equals("String_Node_Str")) {
    return connection.getThousandSeparator();
  }
  if (value.equals("String_Node_Str")) {
    return connection.getDecimalSeparator();
  }
  if (value.equals("String_Node_Str")) {
    return getExcelSheetTableValue(connection);
  }
  return null;
}

Fixed version (ground truth):
/** 
 * DOC yexiaowei Comment method "getExcelFileValue".
 * @param connection
 * @param value
 * @return
 */
private static Object getExcelFileValue(FileExcelConnection connection,String value){
  if (value.equals("String_Node_Str")) {
    if (isContextMode(connection,connection.getFilePath())) {
      return connection.getFilePath();
    }
 else {
      Path p=new Path(connection.getFilePath());
      return TalendQuoteUtils.addQuotes(p.toPortableString());
    }
  }
  if (value.equals("String_Node_Str")) {
    return TalendQuoteUtils.addQuotes(connection.getSheetName());
  }
  if (value.equals("String_Node_Str")) {
    return connection.isSelectAllSheets();
  }
  if (value.equals("String_Node_Str")) {
    if (isContextMode(connection,connection.getFirstColumn())) {
      return connection.getFirstColumn();
    }
 else {
      if (isPerlProject()) {
        return TalendQuoteUtils.addQuotes(connection.getFirstColumn());
      }
 else {
        return connection.getFirstColumn();
      }
    }
  }
  if (value.equals("String_Node_Str")) {
    if (isContextMode(connection,connection.getLastColumn())) {
      return connection.getLastColumn();
    }
 else {
      if (isPerlProject()) {
        if (connection.getLastColumn() != null && !connection.getLastColumn().equals("String_Node_Str")) {
          return TalendQuoteUtils.addQuotes(connection.getLastColumn());
        }
      }
 else {
        return connection.getLastColumn();
      }
    }
  }
  if (value.equals("String_Node_Str")) {
    return connection.isAdvancedSpearator();
  }
  if (value.equals("String_Node_Str")) {
    return connection.getThousandSeparator();
  }
  if (value.equals("String_Node_Str")) {
    return connection.getDecimalSeparator();
  }
  if (value.equals("String_Node_Str")) {
    return getExcelSheetTableValue(connection);
  }
  if (value.equals("String_Node_Str")) {
    return connection.getGenerationMode();
  }
  return null;
}