Listener para popular campo com o usuario do JAAS.

CurrentUserListener.java

package br.com.app.model.entity.listener;

import javax.ejb.EJB;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import net.vidageek.mirror.dsl.Mirror;
import net.vidageek.mirror.exception.MirrorException;

/**
 * listener para popular campo com o usuario do JAAS.
 * 
 * @author Dilnei Cunha
 */
public class CurrentUserListener {

	private transient final Logger logger = LoggerFactory.getLogger(getClass());

	@EJB
	private CurrentUserBean currentUserBean;

	@PrePersist
	@PreUpdate
	public void load(Object object) {
		if (object != null) {
			try {
				String usuario = currentUserBean.getCurrentUser();
				new Mirror().on(object).invoke().method("setUsuario").withArgs(usuario);
			} catch (MirrorException e) {
				logger.warn("Object {} não tem um método setUsuario", object.getClass());
			}
		}
	}
}