Examples of org.apache.log4j.spi.LoggingEvent

org.apache.log4j.spi.LoggingEvent
The internal representation of logging events. When an affirmative decision is made to log then a LoggingEvent instance is created. This instance is passed around to the different log4j components.
This class is of concern to those wishing to extend log4j.

Writers of log4j components such as appenders and receivers should be aware of that some of the LoggingEvent fields are initialized lazily. Therefore, an appender wishing to output data to be later correctly read by a receiver, must initialize "lazy" fields prior to writing them out. See the {@link #prepareForDeferredProcessing()} method for the exact list.
Moreover, in the absence of certain fields, receivers must set the values of null fields to a default non-null value. For example, in the absence of the locationInfo data, the locationInfo field should be set to {@link org.apache.log4j.spi.location.LocationInfo#NA_LOCATION_INFO LocationInfo.NA_LOCATION_INFO}. @author Ceki Gülcü @author James P. Cakalic

      Statement statement = connection.createStatement();
      ResultSet rs = statement.executeQuery(sql.toString());
      //rs.beforeFirst();


      while (rs.next()) {
        LoggingEvent event = new LoggingEvent();


        event.setSequenceNumber(rs.getLong(1));
        event.setTimeStamp(rs.getLong(2));
        event.setRenderedMessage(rs.getString(3));
        event.setLoggerName(rs.getString(4));
        String levelStr = rs.getString(5);


        // TODO CG The conversion of levelStr should be more general
        Level level = Level.toLevel(levelStr);
        event.setLevel(level);
        event.setNDC(rs.getString(6));
        event.setThreadName(rs.getString(7));


        short mask = rs.getShort(8);


        String fileName = rs.getString(9);
        String className = rs.getString(10);
        String methodName = rs.getString(11);
        String lineNumber = rs.getString(12).trim();


        if (fileName.equals(LocationInfo.NA)) {
          event.setLocationInformation(LocationInfo.NA_LOCATION_INFO);
        } else {
          event.setLocationInformation(new LocationInfo(fileName, className,
              methodName, lineNumber));
        }


        long id = rs.getLong(13);
        //LogLog.info("Received event with id=" + id);
        lastId = id;


        // Scott asked for this info to be
        event.setProperty(Constants.LOG4J_ID_KEY, Long.toString(id));


        if ((mask & DBHelper.PROPERTIES_EXIST) != 0) {
          getProperties(connection, id, event);
        }

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    //messages are listed before exceptions in additionallines
    if (additionalLines.size() > 0 && exceptionLine != 0) {
      currentMap.put(MESSAGE, buildMessage((String) currentMap.get(MESSAGE),
          exceptionLine));
    }
    LoggingEvent event = convertToEvent(currentMap, exception);
    currentMap.clear();
    additionalLines.clear();
    return event;
  }

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    getLogger().debug("tailing file: " + tailing);
    do {
      while ((line = bufferedReader.readLine()) != null) {
        if (eventMatcher.matches(line, regexpPattern)) {
          //build an event from the previous match (held in current map)
          LoggingEvent event = buildEvent();
          if (event != null) {
            if (passesExpression(event)) {
              doPost(event);
            }
          }
          currentMap.putAll(processEvent(eventMatcher.getMatch()));
        } else {
          //getLogger().debug("line doesn't match pattern - must be ")
          //may be an exception or additional message lines
          additionalLines.add(line);
        }
      }


      //process last event if one exists
      LoggingEvent event = buildEvent();
      if (event != null) {
        if (passesExpression(event)) {
          doPost(event);
        }
        getLogger().debug("no further lines to process in " + fileURL);

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      info = new LocationInfo(eventFileName, className, methodName, lineNumber);
    } else {
      info = LocationInfo.NA_LOCATION_INFO;
    }


    LoggingEvent event = new LoggingEvent();
    event.setLogger(logger);
    event.setTimeStamp(timeStamp);
    event.setLevel(levelImpl);
    event.setThreadName(threadName);
    event.setMessage(message);
    event.setThrowableInformation(new ThrowableInformation(exception));
    event.setLocationInformation(info);
    event.setNDC(ndc);
    event.setProperties(properties);
    return event;
  }

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   * Other approaches might yield better results.
   * </p>
   */
  public void run() {
    //Category cat = Category.getInstance(Dispatcher.class.getName());
    LoggingEvent event;


    while (true) {
      synchronized (bf) {
        if (bf.length() == 0) {
          // Exit loop if interrupted but only if the the buffer is empty.

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    }
    
    List eventList = listAppender.getList();
    int size = eventList.size();
    for(int i = 0; i < size; i++) {
      LoggingEvent event = (LoggingEvent) eventList.get(i);
      Logger xLogger = event.getLogger();
      if (event.getLevel().isGreaterOrEqual(xLogger.getEffectiveLevel())) {
        xLogger.callAppenders(event);
      }
    }
    listAppender.clearList();
    listAppender.close();

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     * @param events the list of events {@link #getInterceptedLogEvents()}
     * @param index the index to check at
     */
    private void assertLoggedMessage(String message, List events, int index)
    {
        LoggingEvent e = (LoggingEvent) events.get(index);


        assertEquals("Message", message, e.getMessage());
    }

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    {
        int count = events.size();


        for (int i = 0; i < count; i++)
        {
            LoggingEvent e = (LoggingEvent) events.get(i);


            String eventMessage = String.valueOf(e.getMessage());


            if (eventMessage.indexOf(message) >= 0)
                return;
        }

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        int count = events.size();


        for (int i = 0; i < count; i++)
        {
            LoggingEvent e = (LoggingEvent) events.get(i);


            String eventMessage = e.getMessage().toString();


            if (compiled == null)
                compiled = _compiler.compile(pattern);


            if (_matcher.contains(eventMessage, compiled))

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      while (iter.hasNext()) {
        LogPanel panel = (LogPanel) iter.next();
        Iterator iter2 = panel.getMatchingEvents(rule).iterator();


        while (iter2.hasNext()) {
          LoggingEvent e = (LoggingEvent) iter2.next();
          list.add(e);
        }
      }


      buildLogPanel(true, ident, list);

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