dao.StudentsDaoImpl.java Source code

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Here is the source code for dao.StudentsDaoImpl.java

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package dao;

import java.util.List;
import java.util.logging.Logger;
import model.Students;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;

/**
 *
 * @author aydar
 */
@Repository
public class StudentsDaoImpl implements StudentsDao {

    private static final org.slf4j.Logger logger = LoggerFactory.getLogger(StudentsDaoImpl.class);
    private SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    @Override
    public void addStudent(Students student) {
        Session session = this.sessionFactory.getCurrentSession();
        session.persist(student);
        logger.info("Student successfully saved. Student details: " + student);
    }

    @Override
    public void updateStudent(Students student) {
        Session session = this.sessionFactory.getCurrentSession();
        session.update(student);
        logger.info("Student successfully updated. Student details: " + student);
    }

    @Override
    public void removeStudent(int id) {
        Session session = this.sessionFactory.getCurrentSession();
        Students student = (Students) session.load(Students.class, new Integer(id));

        if (student != null) {
            session.delete(student);
        }
        logger.info("Student successfully removed. Student details: " + student);
    }

    @Override
    public Students getStudentById(int id) {
        Session session = this.sessionFactory.getCurrentSession();
        Students student = (Students) session.load(Students.class, new Integer(id));
        logger.info("Student successfully loaded. Student details: " + student);

        return student;
    }

    @Override
    @SuppressWarnings("unchecked")
    public List<Students> listStudents() {
        Session session = this.sessionFactory.getCurrentSession();
        List<Students> studentsList = session.createQuery("from Students").list();

        for (Students student : studentsList) {
            logger.info("Students list: " + student);
        }

        return studentsList;
    }

}