package ch.qos.logback.access.common.boolex;
   
   import ch.qos.logback.access.common.spi.IAccessEvent;
   import ch.qos.logback.core.boolex.EvaluationException;
   import ch.qos.logback.core.boolex.EventEvaluatorBase;
   
   /**
    * A very simple {@link ch.qos.logback.core.boolex.EventEvaluator EventEvaluator}
    * which checks whether the status of {@link IAccessEvent access event} is equal
   * to a status code given as a parameter.
   *
   * @since 2.0.6
   */
  public class StatusCodeEventEvaluator extends EventEvaluatorBase<IAccessEvent> {
  
      final static int UNSET = -1;
      int statusCode = UNSET;
  
      @Override
      public void start() {
          if(statusCode == UNSET) {
              addWarn("No status code set");
              return;
          }
          super.start();
      }
      @Override
      public boolean evaluate(IAccessEvent iAccessEvent) throws NullPointerException, EvaluationException {
          if (!isStarted()) {
              throw new IllegalStateException("Evaluator [" + this + "] was called in stopped state");
          }
          boolean result = (iAccessEvent.getStatusCode() == statusCode);
          return result;
      }
  
      public int getStatusCode() {
          return statusCode;
      }
  
      public void setStatusCode(int statusCode) {
          this.statusCode = statusCode;
      }
  }