Java tutorial
/* * 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 applicationController.Handlers; import applicationController.APC_commBean; import applicationController.HandlersInterface; import hibernate.HibernateUtilSingleton; import hibernateEntities.Meeting; import hibernateEntities.Message; import java.util.HashMap; import java.util.List; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.Transaction; import org.quickconnectfamily.json.JSONOutputStream; /** * * @author cgood92 */ public class GetAllChatsHandler implements HandlersInterface { private APC_commBean commBean; public GetAllChatsHandler() { this.commBean = new APC_commBean(); } @Override public void handleIt(HashMap inMap, JSONOutputStream outToClient) { Session session = HibernateUtilSingleton.getSessionFactory().getCurrentSession(); Transaction transaction = session.beginTransaction(); Query query = session.createQuery("FROM Meeting WHERE meeting_id = :meeting "); query.setParameter("meeting", this.commBean.convertLong(((HashMap) inMap.get("data")).get("meeting"))); Meeting meeting = (Meeting) query.uniqueResult(); String returnMsg = ""; if (meeting != null) { for (Message msg : meeting.getMessages()) { returnMsg += msg.getUsername() + ": " + msg.getMsg() + "\n"; } } else { Meeting newMeeting = new Meeting(); newMeeting.setMeeting_id(this.commBean.convertLong(((HashMap) inMap.get("data")).get("meeting"))); newMeeting.setName("not named yet"); session.save(newMeeting); } session.getTransaction().commit(); this.commBean.setCommand("SENDCHAT"); HashMap data = new HashMap(); data.put("msg", returnMsg); this.commBean.setData(data); try { outToClient.writeObject(this.commBean); } catch (Exception e) { e.printStackTrace(); } } }