Hi All,

I am trying to understand an old code written by a colleague who has left the company now.

The problem is about calling a start() method, which should then initialize a timeerservice and further invokes a method.

The code was presumably working fine earlier on jboss 5, but since we have now migrated to jboss 6, it does not seems to work.

The EJB is as follows:

package com.abc.potsdam.middleware.cache;


import java.util.StringTokenizer;


import javax.annotation.Resource;
import javax.ejb.EJB;
import javax.ejb.SessionContext;
import javax.ejb.Singleton;
import javax.ejb.Stateless;
import javax.ejb.Timeout;
import javax.ejb.Timer;
import javax.ejb.TimerService;
import javax.ejb.TransactionAttribute;
import javax.ejb.TransactionAttributeType;


import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jboss.annotation.ejb.Service;


import com.traveltainment.potsdam.common.configuration.ConfigService;


@Singleton
@Stateless
@TransactionAttribute(TransactionAttributeType.NEVER)
public class CacheLoaderBean implements CacheLoader, CacheLoaderManagement {
  private Log log = LogFactory.getLog(this.getClass());


  @EJB(mappedName = "/ConfigServiceBean/local")
  ConfigService configService;


  @EJB
  DroolsSession droolsSession;


  @Resource
  private SessionContext sessionContext;


  /**
  * after 10000 ms starting of loading persistence units
  * 
  * @param timer
  */
  @Timeout
  public void startTimeout(Timer timer) {
  loadPersistenceUnitsToCache();
  }


  public void loadPersistenceUnitsToCache() {
  String persistenceUnits = configService
  .getProperty("AvailablePersistenceUnits");
  log.info("reloading persistence units: " + persistenceUnits);


  StringTokenizer stringTokenizer = new StringTokenizer(persistenceUnits,
  ",");


  while (stringTokenizer.hasMoreTokens()) {
  String persistenceUnitName = stringTokenizer.nextToken();


  droolsSession.initSession(persistenceUnitName);
  }
  }


  public void start() {
  // create timer for 10000 ms to start loading cache
  TimerService timerService = sessionContext.getTimerService();
  Timer timer = timerService.createTimer(10000, "cache loading timer");
  }
}

The imported interfaces are:

package com.abc.potsdam.middleware.cache;


import org.jboss.ejb3.annotation.Management;


@Management


public interface CacheLoaderManagement
{
  public void loadPersistenceUnitsToCache();
  
  public void start();
}

package com.abc.potsdam.middleware.cache;


import javax.ejb.Local;


import org.jboss.annotation.ejb.Management;


@Local
public interface CacheLoader
{
  public void loadPersistenceUnitsToCache();
}

The problem is that in my implementation bean, I don't see the start() method ever getting executed. If it is to be invoked via JMX-Console then also I am a bit unaware as to how I can do that?

Since the start method never gets executed, the rest of the functionality is also never invoked.

I have done a bit of research on the topic, and found out at some threads that probably @Singleton and @Management have some issues together when using jboss 6?

The compilation is all done fine, it is only then the code never gets executed and I don't see the log messages appearing.

Could some please give me some pointers as to how I can set a timer for my scenario here?

Thanks.