UserIdentifiesRepository

package es.cenobit.domain.useridentifies;

import java.math.BigDecimal;
import java.util.Date;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import es.cenobit.baserepository.BaseRepositories;
import es.cenobit.domain.dbcurrentsessionid.DBCurrentSessionIds;

@Repository
@Transactional(readOnly = true)
public class UserIdentifiesRepository implements UserIdentifieses {

    private Log log = LogFactory.getLog(UserIdentifiesRepository.class);

    @Autowired
    private BaseRepositories baseRepository;

    @Autowired
    private DBCurrentSessionIds dbCurrentSessionIdRepository;

    public UserIdentifiesRepository() {
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * es.cenobit.domain.useridentifies.UserIdentifieses#save
     * (java.lang.String)
     */
    @Override
    @Transactional(readOnly = false)
    public void save(final String userName) {
        if (userName == null || StringUtils.isEmpty(userName)) {
            throw new IllegalArgumentException("O nome do usuário não pode ser nulo");
        }

        final BigDecimal pid = this.dbCurrentSessionIdRepository.pid();
        UserIdentifies userIdentifies = this.baseRepository.findById(UserIdentifies.class, pid);

        // http://www.stevideter.com/2008/12/07/saveorupdate-versus-merge-in-hibernate/
        // http://www.hibernate-training-guide.com/merge.html
        if (userIdentifies == null) {
            userIdentifies = new UserIdentifies();
            userIdentifies.setId(pid);
            userIdentifies.setUserName(userName);
            userIdentifies.setDateBegin(new Date());
            this.baseRepository.getSession().save(userIdentifies);
        } else {
            userIdentifies.setId(pid);
            userIdentifies.setUserName(userName);
            userIdentifies.setDateBegin(new Date());
            this.baseRepository.getSession().merge(userIdentifies);
        }
    }
}