Examples of java.util.logging.Filter

java.util.logging.Filter
A Filter can be used to provide fine grain control over what is logged, beyond the control provided by log levels.
Each Logger and each Handler can have a filter associated with it. The Logger or Handler will call the isLoggable method to check if a given LogRecord should be published. If isLoggable returns false, the LogRecord will be discarded. @version 1.6, 11/17/05 @since 1.4

    logger.setLevel(java.util.logging.Level.ALL);
    java.util.logging.Handler handler;
    handler = new ConsoleHandler();
    logger.addHandler(handler);


    handler.setFilter(new Filter() { // select what gets logged
        public boolean isLoggable(LogRecord record) {
          return true;
        }
      });
  }

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    }
    
    private Filter makeFilter(final String name) {
        if (name == null) return null;
        
        Filter f = null;
        try {
            final Class<?> c = Class.forName(name);
            f = (Filter)c.newInstance();
        } catch (final Exception e) {
            if (name != null) {

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    }
    
    private Filter makeFilter(final String name) {
        if (name == null) return null;
        
        Filter f = null;
        try {
            final Class<?> c = Class.forName(name);
            f = (Filter)c.newInstance();
        } catch (final Exception e) {
            System.err.println("Unable to load filter: " + name);

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  public void publish(LogRecord record)
  {
    if (! isLoggable(record))
      return;


    Filter filter = getFilter();
    if (filter != null && ! filter.isLoggable(record))
      return;


    try {
      String value;

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  public void publish(LogRecord record)
  {
    if (! isLoggable(record))
      return;


    Filter filter = getFilter();
    if (filter != null && ! filter.isLoggable(record))
      return;


    try {
      String value;

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  public void publish(LogRecord record)
  {
    if (! isLoggable(record))
      return;


    Filter filter = getFilter();
    if (filter != null && ! filter.isLoggable(record))
      return;


    try {
      String value;

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    }


    @Override
    public void init() throws ServletException {
        java.util.logging.Logger rootLogger = java.util.logging.Logger.getLogger(CLOSURE_COMPILER_PACKAGE_NAME);
        Filter logFilter = new CompilerLogFilter();
        rootLogger.setFilter(logFilter);
        rootLogger = java.util.logging.Logger.getLogger(CLOSURE_COMPILER_PACKAGE_NAME + ".PhaseOptimizer");
        rootLogger.setFilter(logFilter);


        try {

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      for (int i = 0; i < handlers.length; i++)
      {
         Handler handler = handlers[i];
         if (handler instanceof ConsoleHandler)
         {
            Filter filter = new Filter()
            {
               public boolean isLoggable(LogRecord record)
               {
                  String name = record.getLoggerName();
                  for (String ns : namespaces)

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        }
        internalLog(lr);
    }


    protected void internalLog(LogRecord record) {
        Filter filter = getFilter();
        if (filter != null && !filter.isLoggable(record)) {
            return;
        }
        String msg = formatMessage(record);
        internalLogFormatted(msg, record);
    }

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     */
    static void enableHandler(final Handler handler, final String handlerName) {
        final Map<String, Filter> disableHandlers = ROOT.getAttachment(DISABLED_HANDLERS_KEY);
        if (disableHandlers != null && disableHandlers.containsKey(handlerName)) {
            synchronized (HANDLER_LOCK) {
                final Filter filter = disableHandlers.get(handlerName);
                handler.setFilter(filter);
                disableHandlers.remove(handlerName);
            }
        }
    }

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