server/compbio/listeners/ContextListener.java

   1 package compbio.listeners;
   2
   3 import java.util.concurrent.Executors;
   4 import java.util.concurrent.ScheduledExecutorService;
   5 import java.util.concurrent.TimeUnit;
   6
   7 import javax.servlet.ServletContextEvent;
   8 import javax.servlet.ServletContextListener;
   9 import javax.servlet.annotation.WebListener;
  10
  11 import compbio.cassandra.CassandraCreate;
  12
  13 /**
  14  * Application Lifecycle Listener implementation class ContextListener
  15  *
  16  */
  17 @WebListener
  18 public class ContextListener implements ServletContextListener {
  19         private ScheduledExecutorService scheduler;
  20         CassandraCreate cc = new CassandraCreate();
  21
  22         /**
  23          * @see ServletContextListener#contextInitialized(ServletContextEvent)
  24          */
  25         public void contextInitialized(ServletContextEvent arg0) {
  26                 System.out.println("ProteoCache session start......");
  27                 cc.Connection();
  28
  29                 scheduler = Executors.newSingleThreadScheduledExecutor();
  30                 scheduler.scheduleAtFixedRate(new Runnable() {
  31                         @Override
  32                         public void run() {
  33                                 cc.Parsing();
  34                         }
  35                 }, 0, 60, TimeUnit.SECONDS);
  36         }
  37
  38         /**
  39          * @see ServletContextListener#contextDestroyed(ServletContextEvent)
  40          */
  41         public void contextDestroyed(ServletContextEvent arg0) {
  42                 cc.Closing();
  43                 System.out.println("Shut down ProteoCache......");
  44                 scheduler.shutdownNow();
  45         }
  46
  47 }