/**
    * 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.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<ILoggingEvent> {
  
      List<String> markerList = new ArrayList<String>();
  
      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 {
  
          List<Marker> markerListInEvent = event.getMarkerList();
          if (markerListInEvent == null || markerListInEvent.isEmpty()) {
              return false;
          }
  
          for (String markerStr : markerList) {
              for (Marker markerInEvent : markerListInEvent) {
                  if (markerInEvent.contains(markerStr)) {
                      return true;
                  }
              }
          }
          return false;
      }
  }