PollingFileMonitorComponent.java

package org.springframework.roo.file.monitor.polling;

import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.apache.felix.scr.annotations.ReferencePolicy;
import org.apache.felix.scr.annotations.ReferenceStrategy;
import org.apache.felix.scr.annotations.Service;
import org.springframework.roo.file.monitor.event.FileEventListener;
import org.springframework.roo.file.monitor.polling.PollingFileMonitorService;

/**
 * Extends {@link PollingFileMonitorService} by making it available as an OSGi
 * component that automatically monitors the environment's
 * {@link FileEventListener} components.
 * 
 * @author Ben Alex
 * @since 1.1
 */
@Component
@Service
@Reference(name = "fileEventListener", strategy = ReferenceStrategy.EVENT,
    policy = ReferencePolicy.DYNAMIC, referenceInterface = FileEventListener.class,
    cardinality = ReferenceCardinality.OPTIONAL_MULTIPLE)
public class PollingFileMonitorComponent extends PollingFileMonitorService {

  protected void bindFileEventListener(final FileEventListener listener) {
    add(listener);
  }

  protected void unbindFileEventListener(final FileEventListener listener) {
    remove(listener);
  }
}