java-design-patterns/service-layer/src/main/java/com/iluwatar/servicelayer/spell/SpellDaoImpl.java

package com.iluwatar.servicelayer.spell;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Restrictions;

import com.iluwatar.servicelayer.common.DaoBaseImpl;

/**
 * 
 * SpellDao implementation.
 *
 */
public class SpellDaoImpl extends DaoBaseImpl<Spell> implements SpellDao {

  @Override
  public Spell findByName(String name) {
    Session session = getSession();
    Transaction tx = null;
    Spell result = null;
    try {
      tx = session.beginTransaction();
      Criteria criteria = session.createCriteria(persistentClass);
      criteria.add(Restrictions.eq("name", name));
      result = (Spell) criteria.uniqueResult();
      result.getSpellbook().getWizards().size();
      tx.commit();
    } catch (Exception e) {
      if (tx != null) {
        tx.rollback();
      }
      throw e;
    } finally {
      session.close();
    }
    return result;
  }
}