Examples of org.apache.log4j.spi.ThrowableInformation

org.apache.log4j.spi.ThrowableInformation
ThrowableInformation is log4j's internal representation of throwables. It essentially consists of a string array, called 'rep', where the first element, that is rep[0], represents the string representation of the throwable (i.e. the value you get when you do throwable.toString()) and subsequent elements correspond the stack trace with the top most entry of the stack corresponding to the second entry of the 'rep' array that is rep[1]. Note that ThrowableInformation does not store the throwable it represents. @author Ceki Gülcü

  @Override
  protected void subAppend(LoggingEvent event) {
    qw.write(super.layout.format(event));


    if (super.layout.ignoresThrowable()) {
      ThrowableInformation throwableInfo = event.getThrowableInformation();
      if (throwableInfo != null) {
        Throwable throwable = throwableInfo.getThrowable();
        Throwable lastThrowable = (Throwable) ERXThreadStorage.valueForKey(ERXConsoleAppender.LAST_THROWABLE_KEY);
        if (throwable != null) {
          if (lastThrowable != throwable) {
            StringWriter exceptionStringWriter = new StringWriter();
            ERXExceptionUtilities.printStackTrace(throwable, new PrintWriter(exceptionStringWriter, true));

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        return new Object[0];
    }


    @Override
    public Throwable getThrowable() {
        ThrowableInformation ti = loggingEvent.getThrowableInformation();
        if (ti != null) {
            return ti.getThrowable();
        }


        return null;
    }

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  /**
   * {@inheritDoc}
   */
  @Override
  public void format(final LoggingEvent event, final StringBuffer toAppendTo) {
    final ThrowableInformation information = event.getThrowableInformation();


    if (information != null) {
      final String[] stringRep = information.getThrowableStrRep();


      int length = 0;


      if (option == null) {
        length = stringRep.length;
      } else if ("full".equals(option)) {
        length = stringRep.length;
      } else if ("short".equals(option)) {
        length = -1;
      } else if ("none".equals(option)) {
        return;
      } else {
        length = stringRep.length;
      }


      toAppendTo.append("\n[Exception: ");


      if (length == -1) {
        toAppendTo.append(generateAbbreviatedExceptionMessage(information.getThrowable()));
      } else {
        for (int i = 0; i < length; i++) {
          final String string = stringRep[i];
          toAppendTo.append(string).append('\n');
        }

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   * {@inheritDoc}
   */
  @Override
  public void format(final LoggingEvent event, final StringBuffer toAppendTo) {


    ThrowableInformation throwableInformation = event.getThrowableInformation();


    if (throwableInformation != null) {


      Throwable throwable = throwableInformation.getThrowable();


      if (throwable instanceof ApplicationExceptionInterface) {// NOPMD
        final ApplicationExceptionInterface ApplicationExceptionInterface = (ApplicationExceptionInterface) throwable;
        toAppendTo.append("[Error code: ");
        toAppendTo.append(ApplicationExceptionInterface.getErrorCode() == null ? "%NO_ERROR_CODE%" : ApplicationExceptionInterface.getErrorCode().toString());

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        return new Object[0];
    }


    @Override
    public Throwable getThrowable() {
        ThrowableInformation ti = loggingEvent.getThrowableInformation();
        if (ti != null) {
            return ti.getThrowable();
        }


        return null;
    }

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      loggingEvent.setTimeStamp(timeStamp);
      loggingEvent.setLevel(levelImpl);
      loggingEvent.setThreadName(threadName);
      loggingEvent.setMessage(message);
      loggingEvent.setNDC(ndc);
      loggingEvent.setThrowableInformation(new ThrowableInformation(exception));
      loggingEvent.setLocationInformation(info);
      loggingEvent.setProperties(properties);
      
      events.add(loggingEvent);

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                            message, null);
                    event.setLocationInformation(new LocationInfo(fileName,
                            className, methodName, lineNumber));
                    properties.putAll(mdc);
                    event.setTimeStamp(timeStamp);
                    event.setThrowableInformation(new ThrowableInformation(
                            exception));


                    event.setProperties(properties);
                    event.setThreadName(threadName);
                    event.setNDC(ndc);

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  /**
   * {@inheritDoc}
   */
  public void format(final LoggingEvent event, final StringBuffer toAppendTo) {
    if (maxLines != 0) {
      ThrowableInformation information = event.getThrowableInformation();


      if (information != null) {
        String[] stringRep = information.getThrowableStrRep();


        int length = stringRep.length;
        if (maxLines < 0) {
            length += maxLines;
        } else if (length > maxLines) {

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    this.logger = logger;
    this.categoryName = logger.getName();
    this.level = level;
    this.message = message;
    if(throwable != null) {
      this.throwableInfo = new ThrowableInformation(throwable);
    }
    timeStamp = System.currentTimeMillis();
  }

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    this.logger = logger;
    this.categoryName = logger.getName();
    this.level = level;
    this.message = message;
    if(throwable != null) {
      this.throwableInfo = new ThrowableInformation(throwable);
    }


    this.timeStamp = timeStamp;
  }

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