source: trunk/src/main/java/omq/common/event/EventListener.java @ 44

package omq.common.event;

/**
 * Abstract class that enables to create new EventListeners. The eventListeners
 * are done to execute the notifyEvent function.
 * 
 * @author Sergi Toda <sergi.toda@estudiants.urv.cat>
 * 
 */
public abstract class EventListener<E extends Event> {
        private String topic;

        public EventListener() {
                topic = null;
        }

        /**
         * Constructor. This constructor uses a String to indicate manually which
         * event we want to receive
         * 
         * @param topic
         */
        public EventListener(String topic) {
                this.topic = topic;
        }

        /**
         * Whenever this listener it's notified of an event, will execute this
         * function
         * 
         * @param event
         */
        public abstract void notifyEvent(E event);

        public void setTopic(String topic) {
                this.topic = topic;
        }

        public String getTopic() {
                return topic;
        }

}