/**
    * 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 chapters.appenders.mail;
  
  import ch.qos.logback.core.boolex.EvaluationException;
  import ch.qos.logback.core.boolex.EventEvaluator;
  import ch.qos.logback.core.spi.ContextAwareBase;
  
  /**
   * A simple EventEvaluator implementation that triggers email transmission after
   * 1024 events regardless of event level.
   */
  public class CounterBasedEvaluator extends ContextAwareBase implements EventEvaluator {
  
      static int LIMIT = 1024;
      int counter = 0;
      String name;
      boolean started;
  
      public boolean evaluate(Object event) throws NullPointerException, EvaluationException {
          counter++;
  
          if (counter == LIMIT) {
              counter = 0;
  
              return true;
          } else {
              return false;
          }
      }
  
      public String getName() {
          return name;
      }
  
      public void setName(String name) {
          this.name = name;
      }
  
      public boolean isStarted() {
          return started;
      }
  
      public void start() {
          started = true;
      }
  
      public void stop() {
          started = false;
      }
  }