br.crescer.aula04.entity.dao.GenericDAO.java Source code

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Here is the source code for br.crescer.aula04.entity.dao.GenericDAO.java

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/*
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package br.crescer.aula04.entity.dao;

import br.crescer.aula04.entity.nunes.Cidade;
import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;

/**
 *
 * @author lucas.lentz
 */
public abstract class GenericDAO<T> implements DAO<T> {
    private Session session;
    private Criteria criteria;
    final EntityManagerFactory emf = Persistence.createEntityManagerFactory("CRESCER16");
    final EntityManager em = emf.createEntityManager();

    @Override
    public T listById(Serializable id) {
        this.session = em.unwrap(Session.class);
        this.criteria = session.createCriteria(this.getClass());
        return (T) this.session.load(getGeneric(), id);
        // throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void insert(T t) {
        Session s = em.unwrap(Session.class);

        s.save(t);
        // throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public void remove(long id) {
        Session s = em.unwrap(Session.class);

        T t = listById(id);
        s.delete(t);

        // throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public List<T> listAll() {
        this.session = em.unwrap(Session.class);
        this.criteria = session.createCriteria(getGeneric());
        return this.criteria.list();
        // throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public List<T> search(String sch) {
        this.session = em.unwrap(Session.class);
        this.criteria = session.createCriteria(getGeneric());
        this.criteria.add(Restrictions.like("nome", sch));
        return this.criteria.list();
        // throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    public abstract Class<?> getGeneric();
}