chitchatserver.SentenceDAO.java Source code

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Here is the source code for chitchatserver.SentenceDAO.java

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/*
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package chitchatserver;

import ChatPackage.Sentence;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

/**
 *
 * @author ASUS
 */
public class SentenceDAO {
    public static ChatPackage.Sentence getSentence(int id) {
        Sentence rs = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            rs = (Sentence) session.get(Sentence.class, id);
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            session.close();
        }
        return rs;
    }

    public static List<ChatPackage.Sentence> getSentences(int conversationId) {
        List<ChatPackage.Sentence> rs = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            String hql = "from Sentence s where s.conversationId=:conversationId";
            Query query = session.createQuery(hql);
            query.setInteger("conversationId", conversationId);
            rs = query.list();
        } catch (Exception ex) {
            System.out.println("Error getting sentences: " + ex.getMessage());
        } finally {
            session.close();
        }
        return rs;
    }

    public static boolean addSentence(Sentence sentence) {
        if (SentenceDAO.getSentence(sentence.getId()) != null) {
            return false;
        }
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            Transaction transaction = session.beginTransaction();
            session.save(sentence);
            transaction.commit();
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            session.close();
        }
        return true;
    }
}