business.ChampionDB.java Source code

Introduction

Here is the source code for business.ChampionDB.java

Source

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package business;

import java.util.List;
import javax.persistence.NoResultException;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import util.HibernateUtil;

/**
 *
 * @author Alyssa
 */
public class ChampionDB {

    public static Champion getChampionByID(int cid) {
        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = null;
        Champion c = null;

        try {
            String qS = "FROM Champion c WHERE c.id = :cid";
            session = sessionFactory.openSession();
            Query q = session.createQuery(qS);
            q.setParameter("cid", cid);
            c = (Champion) q.uniqueResult();
        } catch (HibernateException e) {
            c = null;
        } finally {
            if (session != null && session.isOpen()) {
                session.close();
            }
        }
        return c;
    }

    public static List<Champion> loadChampions(int aid) {
        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = null;
        List<Champion> champs = null;

        try {
            String qS = "FROM Champion c WHERE c.accountID = :aid";
            session = sessionFactory.openSession();
            Query q = session.createQuery(qS);
            q.setParameter("aid", aid);
            champs = q.list();
        } catch (HibernateException e) {
            champs = null;
        } finally {
            if (session != null && session.isOpen()) {
                session.close();
            }
        }

        return champs;
    }

    public static boolean checkChampionName(String name) {
        boolean used = false;
        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = null;
        Champion c;

        try {
            String qS = "FROM Champion c WHERE c.name = :name";
            session = sessionFactory.openSession();
            Query q = session.createQuery(qS);
            q.setParameter("name", name);
            c = (Champion) q.uniqueResult();
            used = true;
        } catch (NoResultException e) {
            used = false;
        } finally {
            if (session != null && session.isOpen()) {
                session.close();
            }
        }

        return used;
    }

    public static String addNewChampion(Champion c) {
        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = null;
        String msg = "";

        try {
            session = sessionFactory.openSession();
            session.beginTransaction();
            session.persist(c);
            session.getTransaction().commit();
            session.flush();
            session.refresh(c);
            msg = "Champion Created!";
        } catch (HibernateException e) {
            msg = "Error Creating Champion: " + e.getMessage();
            if (session != null && session.isOpen()) {
                session.getTransaction().rollback();
            }
        } finally {
            session.close();
        }

        return msg;
    }
}