com.laborun.dao.CourseDaoImp.java Source code

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Here is the source code for com.laborun.dao.CourseDaoImp.java

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package com.laborun.dao;

import com.laborun.entity.Course;
import com.laborun.entity.GroupD;
import com.laborun.entity.UserD;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;

/**
 *
 * @author dina
 */
public class CourseDaoImp implements CourseDaoInt {

    public List<Course> getCourses(GroupD group) {
        Session session = Connection.getConnection();
        List<Course> courses = null;
        Criteria cr = session.createCriteria(GroupD.class);
        cr.add(Restrictions.eq("id", group.getId()));
        List results = cr.list();
        Iterator it = results.iterator();

        while (it.hasNext()) {
            courses = new ArrayList<Course>(((GroupD) it.next()).getCourses());
        }

        return courses;
    }

    public boolean insertCourse(Course course) {
        boolean flag = true;
        Session session = Connection.getConnection();
        Criteria cr = session.createCriteria(Course.class);
        cr.add(Restrictions.eq("courseName", course.getCourseName()));
        List results = cr.list();
        Iterator it = results.iterator();
        while (it.hasNext()) {

            flag = false;
            System.out.println("course already exists");
            break;

        }
        if (flag == true) {
            session.beginTransaction();
            session.persist(course);
            session.getTransaction().commit();
            System.out.println("data inserted");
        }
        return flag;
    }

    public List<Course> getCourses() {
        Session session = Connection.getConnection();
        List<Course> courses = null;
        Criteria cr = session.createCriteria(Course.class);
        courses = cr.list();

        return courses;
    }
}