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package com.sun.ejb.containers;
import java.beans.PropertyChangeEvent;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.logging.LogDomains;
import org.glassfish.ejb.config.EjbTimerService;
import org.jvnet.hk2.annotations.Service;
import javax.inject.Inject;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.UnprocessedChangeEvent;
import org.jvnet.hk2.config.UnprocessedChangeEvents;
/**
* ConfigListener class for the EJB Timer Service changes
*
* @author Marina Vatkina
*/
@Service
public class EJBTimerServiceConfigListener implements ConfigListener {
private static final Logger _logger = LogDomains.getLogger(
EJBTimerServiceConfigListener.class, LogDomains.EJB_LOGGER);
// Injecting @Configured type triggers the corresponding change
// events to be sent to this instance
@Inject private EjbTimerService ejbt;
/****************************************************************************/
/** Implementation of org.jvnet.hk2.config.ConfigListener *********************/
/****************************************************************************/
public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
// Events that we can't process now because they require server restart.
List<UnprocessedChangeEvent> unprocessedEvents = new ArrayList<UnprocessedChangeEvent>();
for (PropertyChangeEvent event : events) {
if (event.getSource() instanceof EjbTimerService) {
Object oldValue = event.getOldValue();
Object newValue = event.getNewValue();
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "Got EjbTimerService change event ==== "
+ event.getSource() + " "
+ event.getPropertyName() + " " + oldValue + " " + newValue);
}
if (oldValue != null && oldValue.equals(newValue)) {
if (_logger.isLoggable(Level.FINE)) {
_logger.log(Level.FINE, "Event " + event.getPropertyName()
+ " did not change existing value of " + oldValue);
}
} else {
unprocessedEvents.add(new UnprocessedChangeEvent(event, "Restart required to reconfigure EJB Timer Service"));
}
}
}
return (unprocessedEvents.size() > 0)
? new UnprocessedChangeEvents(unprocessedEvents) : null;
}
}