/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.graylog2.streams.matchers;

import org.graylog2.plugin.Message;
import org.graylog2.plugin.streams.StreamRule;

import static org.graylog2.plugin.Tools.getDouble;

/**
 * @author Lennart Koopmann <lennart@socketfeed.com>
 */
public class SmallerMatcher implements StreamRuleMatcher {

	@Override
	public boolean match(Message msg, StreamRule rule) {
        Double msgVal = getDouble(msg.getField(rule.getField()));

        if (msgVal == null) {
            return false;
        }

        Double ruleVal = getDouble(rule.getValue());
        if (ruleVal == null) {
            return false;
        }

		return rule.getInverted() ^ (msgVal < ruleVal);
	}

}