Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic.filter;

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.filter.AbstractMatcherFilter;
import ch.qos.logback.core.spi.FilterReply;

A class that filters events by the level equality.

For more information about this filter, please refer to the online manual at
http://logback.qos.ch/manual/filters.html#levelFilter
Author:
Ceki Gülcü, Sébastien Pennec/**
 * A class that filters events by the level equality.

 * <p>
 * For more information about this filter, please refer to the online manual at
 * http://logback.qos.ch/manual/filters.html#levelFilter
 * 
 * @author Ceki G&uuml;lc&uuml;
 * @author S&eacute;bastien Pennec
 */
public class LevelFilter extends AbstractMatcherFilter<ILoggingEvent> {

    Level level;

    @Override
    public FilterReply decide(ILoggingEvent event) {
        if (!isStarted()) {
            return FilterReply.NEUTRAL;
        }

        if (event.getLevel().equals(level)) {
            return onMatch;
        } else {
            return onMismatch;
        }
    }

    public void setLevel(Level level) {
        this.level = level;
    }

    public void start() {
        if (this.level != null) {
            super.start();
        }
    }
}