/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2011, 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.db;
  
  import ch.qos.logback.classic.spi.ILoggingEvent;
  
  /**
   * @author Ceki Gülcü
   * 
   */
  public class DBHelper {
  
    public static short PROPERTIES_EXIST = 0x01;
    public static short EXCEPTION_EXISTS = 0x02;
  
    public static short computeReferenceMask(ILoggingEvent event) {
      short mask = 0;
  
      int mdcPropSize = 0;
      if (event.getMDCPropertyMap() != null) {
        mdcPropSize = event.getMDCPropertyMap().keySet().size();
      }
      int contextPropSize = 0;
      if (event.getLoggerContextVO().getPropertyMap() != null) {
        contextPropSize = event.getLoggerContextVO().getPropertyMap().size();
      }
  
      if (mdcPropSize > 0 || contextPropSize > 0) {
        mask = PROPERTIES_EXIST;
      }
      if (event.getThrowableProxy() != null) {
        mask |= EXCEPTION_EXISTS;
      }
      return mask;
    }
  }