001/**
002 * Logback: the reliable, generic, fast and flexible logging framework.
003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
004 *
005 * This program and the accompanying materials are dual-licensed under
006 * either the terms of the Eclipse Public License v1.0 as published by
007 * the Eclipse Foundation
008 *
009 *   or (per the licensee's choosing)
010 *
011 * under the terms of the GNU Lesser General Public License version 2.1
012 * as published by the Free Software Foundation.
013 */
014package ch.qos.logback.classic.filter;
015
016import ch.qos.logback.classic.Level;
017import ch.qos.logback.classic.spi.ILoggingEvent;
018import ch.qos.logback.core.filter.AbstractMatcherFilter;
019import ch.qos.logback.core.spi.FilterReply;
020
021/**
022 * A class that filters events by the level equality.
023 * 
024 * <p>
025 * For more information about this filter, please refer to the online manual at
026 * http://logback.qos.ch/manual/filters.html#levelFilter
027 * 
028 * @author Ceki G&uuml;lc&uuml;
029 * @author S&eacute;bastien Pennec
030 */
031public class LevelFilter extends AbstractMatcherFilter<ILoggingEvent> {
032
033    Level level;
034
035    @Override
036    public FilterReply decide(ILoggingEvent event) {
037        if (!isStarted()) {
038            return FilterReply.NEUTRAL;
039        }
040
041        if (event.getLevel().equals(level)) {
042            return onMatch;
043        } else {
044            return onMismatch;
045        }
046    }
047
048    public void setLevel(Level level) {
049        this.level = level;
050    }
051
052    public void start() {
053        if (this.level != null) {
054            super.start();
055        }
056    }
057}