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package com.megatim.fdxconsultation.dao.impl.stats;

import com.megatim.fdxconsultation.dao.ifaces.stats.CriteriaEntityPersistedDAO;
import com.megatim.fdxconsultation.dao.ifaces.stats.TableConfigurationDAO;
import com.megatim.fdxconsultation.model.stats.CriteriaEntityPersisted;
import com.megatim.fdxconsultation.model.stats.TableConfiguration;
import java.util.Optional;
import javax.ejb.EJB;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;

/**
 *
 * @author ASUS
 */
@Stateless
public class TableConfigurationDAOImpl implements TableConfigurationDAO {

    @PersistenceContext(unitName = "fdxConsultationPersistenceUnit")
    protected EntityManager em;

    @EJB
    CriteriaEntityPersistedDAO criteriaDao;

    @Override
    public Class<TableConfiguration> getManagedEntityClass() {
        return TableConfiguration.class;
    }

    @Override
    public EntityManager getEntityManager() {
        return em;
    }

    @Override
    public TableConfiguration getById(Long id) {
        Query query = em.createQuery("SELECT t FROM TableConfiguration t LEFT JOIN FETCH t.groupingColumns where t.id = :id");
        query.setParameter("id", id);
        Optional<TableConfiguration> optTableConfiguration = query.getResultList().stream().findFirst();

        TableConfiguration tableConf = optTableConfiguration.isPresent() ? optTableConfiguration.get() : null;
        
        if(tableConf == null) {
            return null;
        }

        if (tableConf.getCriterion() != null) {
            CriteriaEntityPersisted criterion = criteriaDao.loadSubCriteria(tableConf.getCriterion());
            tableConf.setCriterion(criterion);
            
        }
        return tableConf;
    }
}