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 com.vertec.daoimpl; import com.vertec.hibe.model.FunctionData; import com.vertec.hibe.model.Service; import com.vertec.util.NewHibernateUtil; import com.vertec.util.VertecConstants; import java.util.List; import org.hibernate.Query; import org.hibernate.SQLQuery; import org.hibernate.Session; import org.hibernate.Transaction; /** * * @author User */ public class FunctionDataDAOImpl { public String saveFunction(FunctionData fun) { Session session = NewHibernateUtil.getSessionFactory().openSession(); Transaction transaction = session.beginTransaction(); if (session != null) { try { session.save(fun); session.flush(); transaction.commit(); return VertecConstants.SUCCESS; } catch (Exception e) { e.printStackTrace(); return VertecConstants.ERROR; } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } public List<Service> getListOfService() { Session session = NewHibernateUtil.getSessionFactory().openSession(); if (session != null) { try { Query query = session.createQuery("SELECT c FROM Service c WHERE c.isValid=:isValid"); query.setParameter("isValid", true); List<Service> csList = query.list(); return csList; } catch (Exception e) { e.printStackTrace(); } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } public Service viewService(int customerId) { Session session = NewHibernateUtil.getSessionFactory().openSession(); if (session != null) { try { Query query = session.getNamedQuery("Service.findById"); query.setParameter("id", customerId); Service user = (Service) query.uniqueResult(); return user; } catch (Exception e) { e.printStackTrace(); } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } public String updateFunction(FunctionData func) { Session session = NewHibernateUtil.getSessionFactory().openSession(); Transaction transaction = session.beginTransaction(); if (session != null) { try { SQLQuery query = session .createSQLQuery("Update function_data set name=:name,state_id=:stateId where id=:Id"); query.setParameter("name", func.getName()); query.setParameter("stateId", func.getStateId()); query.setParameter("Id", func.getId()); query.executeUpdate(); transaction.commit(); return VertecConstants.UPDATED; } catch (Exception e) { e.printStackTrace(); return VertecConstants.ERROR; } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } public String removeFunction(int funcId) { Session session = NewHibernateUtil.getSessionFactory().openSession(); Transaction transaction = session.beginTransaction(); if (session != null) { try { SQLQuery query = session .createSQLQuery("Update function_data set isvalid=:is_valid where id=:serId"); query.setParameter("serId", funcId); query.setParameter("is_valid", false); query.executeUpdate(); transaction.commit(); return VertecConstants.UPDATED; } catch (Exception e) { e.printStackTrace(); return VertecConstants.ERROR; } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } }