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/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2013, 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.boolex;

import java.util.ArrayList;
import java.util.List;

import org.slf4j.Marker;

import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.boolex.EvaluationException;
import ch.qos.logback.core.boolex.EventEvaluatorBase;

/**
 * Evaluates to true when the logging event passed as parameter contains one of
 * the user-specified markers.
 * 
 * @author Ceki Gülcü
 */
public class OnMarkerEvaluator extends EventEvaluatorBase {

  List markerList = new ArrayList();

  public void addMarker(String markerStr) {
    markerList.add(markerStr);
  }

  /**
   * Return true if event passed as parameter contains one of the specified
   * user-markers.
   */
  public boolean evaluate(ILoggingEvent event) throws NullPointerException,
      EvaluationException {

    Marker eventsMarker = event.getMarker();
    if (eventsMarker == null) {
      return false;
    }

    for (String markerStr : markerList) {
      if (eventsMarker.contains(markerStr)) {
        return true;
      }
    }
    return false;
  }
}