package org.vives.persistence.DAO;

import org.springframework.stereotype.Repository;
import org.vives.domain.Beer;

import javax.persistence.*;
import java.util.ArrayList;
import java.util.List;

@Repository
public class BeerDAO {

    @PersistenceContext
    EntityManager entityManager;

    public Beer findOne( long id ){
        return entityManager.find( Beer.class, id );
    }

	@SuppressWarnings("unchecked")
    public List<Beer> findAll(){
        List<Beer> beers = entityManager.createQuery("from Beer" ).getResultList();
        return beers;
    }

    public void create( Beer entity ){
        entityManager.persist( entity );
    }

    public Beer update( Beer entity ){
        return entityManager.merge( entity );
    }

    public void delete( Beer entity ){
        entityManager.remove( entity );
    }

    public void deleteById( long entityId ){
        Beer entity = findOne( entityId );
        delete( entity );
    }

}