Examples of org.apache.log4j.Logger

org.apache.log4j.Logger

This class is a minimal implementation of the original org.apache.log4j.Logger class (as found in log4j 1.2) delegating all calls to a {@link org.slf4j.Logger} instance.
@author Ceki Gülcü

  public void setObserver(final Observer observer) {
    if(observer != null) {
      addObserver(observer);     
    } else {
      // log it.
      final Logger logger = Logger.getLogger(Registrator.class);
      logger.error("null observer was not added.", new Throwable());
    }
  }

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  @Test
  public void test_normal_debug() {
    Log log4nut = Logs.getLog(Dao.class);
    assertTrue(log4nut.getClass().getName().contains(Log4jLogAdapter.class.getName()));
    Logger log4j = LogManager.getLogger(Dao.class);


    assertEquals(log4nut.isInfoEnabled(), log4j.isInfoEnabled());
    assertEquals(log4nut.isDebugEnabled(), log4j.isDebugEnabled());
    assertEquals(log4nut.isTraceEnabled(), log4j.isTraceEnabled());
  }

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  public void testCategoryFactory1() {
      DOMConfigurator.configure("input/xml/categoryfactory1.xml");
      //
      //   logger explicitly mentioned in configuration,
      //         should be a CustomLogger
      Logger logger1 = Logger.getLogger("org.apache.log4j.xml.DOMTestCase.testCategoryFactory1.1");
      assertTrue(logger1 instanceof CustomLogger);
      //
      //   logger not explicitly mentioned in configuration,
      //         should use default factory
      Logger logger2 = Logger.getLogger("org.apache.log4j.xml.DOMTestCase.testCategoryFactory1.2");
      assertFalse(logger2 instanceof CustomLogger);
  }

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    public void testCategoryFactory2() {
        DOMConfigurator.configure("input/xml/categoryfactory2.xml");
        //
        //   logger explicitly mentioned in configuration,
        //         should be a CustomLogger
        Logger logger1 = Logger.getLogger("org.apache.log4j.xml.DOMTestCase.testCategoryFactory2.1");
        assertTrue(logger1 instanceof CustomLogger);
        //
        //   logger not explicitly mentioned in configuration,
        //         should use default factory
        Logger logger2 = Logger.getLogger("org.apache.log4j.xml.DOMTestCase.testCategoryFactory2.2");
        assertFalse(logger2 instanceof CustomLogger);
    }

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  public void testLoggerFactory1() {
      DOMConfigurator.configure("input/xml/loggerfactory1.xml");
      //
      //   logger explicitly mentioned in configuration,
      //         should be a CustomLogger
      Logger logger1 = Logger.getLogger("org.apache.log4j.xml.DOMTestCase.testLoggerFactory1.1");
      assertTrue(logger1 instanceof CustomLogger);
      //
      //   logger not explicitly mentioned in configuration,
      //         should use default factory
      Logger logger2 = Logger.getLogger("org.apache.log4j.xml.DOMTestCase.testLoggerFactory1.2");
      assertFalse(logger2 instanceof CustomLogger);
  }

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         * Create new logger.
         * @param name logger name.
         * @return new logger.
         */
      public Logger makeNewLoggerInstance(final String name) {
          Logger logger = new CustomLogger(name);
          assertFalse(additivity);
          return logger;
      }

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    public void doStart() {
        LogFactory logFactory = LogFactory.getFactory();
        if (logFactory instanceof GeronimoLogFactory) {
            // Make sure the root Logger has loaded
            Logger logger = LogManager.getRootLogger();


            // Change all of the loggers over to use log4j
            GeronimoLogFactory geronimoLogFactory = (GeronimoLogFactory) logFactory;
            synchronized (geronimoLogFactory) {
                if (!(geronimoLogFactory.getLogFactory() instanceof CachingLog4jLogFactory)) {

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  public void testAppendBelowThreshold() {
    SyslogAppender appender = new SyslogAppender();
    appender.setThreshold(Level.ERROR);
    appender.activateOptions();


    Logger logger = Logger.getRootLogger();
    logger.addAppender(appender);
    logger.info(
      "Should not be logged by SyslogAppenderTest.testAppendBelowThreshold.");
  }

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    VectorErrorHandler errorHandler = new VectorErrorHandler();
    appender.setErrorHandler(errorHandler);
    appender.setLayout(new PatternLayout("%m%n"));
    appender.activateOptions();


    Logger logger = Logger.getRootLogger();
    logger.addAppender(appender);
    logger.info(
      "Should not be logged by SyslogAppenderTest.testAppendNoHost.");
    assertEquals(1, errorHandler.size());


    //
    //  Appender is misspelled in implementation

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    //
    AsyncAppender asyncAppender = new AsyncAppender();
    asyncAppender.addAppender(appender);
    asyncAppender.activateOptions();


    Logger logger = Logger.getRootLogger();
    logger.addAppender(asyncAppender);


    Exception e =
      new Exception("Expected exception from SyslogAppenderTest.testAppend");
    logger.info(
      "Expected message from log4j unit test SyslogAppenderTest.testAppend.", e);
    assertEquals(0, errorHandler.size());
  }

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