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.PackageHasFeatures; import com.vertec.hibe.model.ProjectDetails; import com.vertec.hibe.model.ProjectExpenses; 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 ExpensesDAOImpl { public String addExpenses(ProjectExpenses expenses) { Session session = NewHibernateUtil.getSessionFactory().openSession(); Transaction transaction = session.beginTransaction(); if (session != null) { try { session.save(expenses); 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 ProjectDetails getProjectDetailsbyID(int id) { Session session = NewHibernateUtil.getSessionFactory().openSession(); if (session != null) { try { Query query = session.getNamedQuery("ProjectDetails.findById"); query.setParameter("id", id); ProjectDetails prList = (ProjectDetails) query.uniqueResult(); return prList; } catch (Exception e) { e.printStackTrace(); } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } public List<ProjectExpenses> loadAllExpenses(int id) { Session session = NewHibernateUtil.getSessionFactory().openSession(); if (session != null) { try { Query query = session.createQuery("SELECT e FROM ProjectExpenses e WHERE e.projectDetailsId = :id"); query.setParameter("id", getProjectDetailsbyID(id)); List<ProjectExpenses> prList = query.list(); return prList; } catch (Exception e) { e.printStackTrace(); } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } public String updateProjectExpenses(ProjectExpenses exp) { Session session = NewHibernateUtil.getSessionFactory().openSession(); Transaction transaction = session.beginTransaction(); if (session != null) { try { SQLQuery query = session .createSQLQuery("Update project_expenses set description=:des,amount=:amt where id=:eId"); query.setParameter("eId", exp.getId()); query.setParameter("des", exp.getDescription()); query.setParameter("amt", exp.getAmount()); 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 ProjectExpenses viewExpenses(int expensesId) { Session session = NewHibernateUtil.getSessionFactory().openSession(); if (session != null) { try { Query query = session.getNamedQuery("ProjectExpenses.findById"); query.setParameter("id", expensesId); ProjectExpenses user = (ProjectExpenses) query.uniqueResult(); return user; } catch (Exception e) { e.printStackTrace(); } finally { if (session != null && session.isOpen()) { session.close(); } } } return null; } }