package org.myorg.basicejb.webejb;
   
   import javax.annotation.PostConstruct;
   
   import javax.annotation.PreDestroy;
   import javax.ejb.Remove;
   import javax.ejb.Stateful;
   
   import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  @Stateful
  public class ShopperEJB implements ShopperRemote {
      private static Logger logger = LoggerFactory.getLogger(ShopperEJB.class);
      
      //we can only track conversation state here if we are stateful
      private int counter=0;
  
      @PostConstruct
      public void init() {
          logger.debug("*** ShopperEJB({}).init() ***", super.hashCode());
      }
      
      @PreDestroy
      public void destroy() {
          logger.debug("*** ShopperEJB({}).destroy() ***", super.hashCode());
      }
      
      @Override
      public int ping() {
          logger.debug("ping({}) called, returned {}", super.hashCode(), counter);
          return counter++;
      }
      
      @Override
      @Remove
      public void close() {
          logger.debug("close({}) called", super.hashCode());        
      }
  }