Merge pull request #13 from sourcecodeschool/common-dao

Common dao

Author: sourcecodeschool

…in/java/ru/javacourse/dao/LessonDao.java …in/java/ru/javacourse/Dao/CommonDao.javasrc/main/java/ru/javacourse/dao/LessonDao.java renamed to src/main/java/ru/javacourse/Dao/CommonDao.java src/main/java/ru/javacourse/dao/LessonDao.java renamed to src/main/java/ru/javacourse/Dao/CommonDao.java

@@ -1,4 +1,4 @@
-package ru.javacourse.dao;
+package ru.javacourse.Dao;
 
 import org.hibernate.Session;
 import org.hibernate.SessionFactory;
@@ -8,24 +8,23 @@
 
 import java.util.List;
 
-public class LessonDao {
-
+public class CommonDao {
     private static SessionFactory sessionFactory = HibernateConfig.getSessionFactory();
+    private java.lang.Object Object;
 
-    //получение списка всех уроков
-    public List<Lesson> getAll ()
+    //получение списка
+   public <T> List<T> getAll(T obj)
     {
         Session session = sessionFactory.openSession();
         Transaction tx = session.beginTransaction();
-        List <Lesson> lessons = session.createQuery("from Lesson").list();
+        List <T> t = session.createQuery("from  " + obj.getClass().getSimpleName()).list();
         tx.commit();
         session.close();
-        return lessons;
+        return t;
     }
 
     //получение записи по id
-    public Lesson getById (String lessonId)
-    {
+    public Lesson getById(String lessonId) {
         Session session = sessionFactory.openSession();
         Transaction tx = session.beginTransaction();
         Lesson lesson = session.get(Lesson.class, lessonId);
@@ -36,8 +35,7 @@ public Lesson getById (String lessonId)
     }
 
     //сохранение записи
-    public <T> void save (T entity)
-    {
+    public <T> void save(T entity) {
         Session session = sessionFactory.openSession();
         Transaction tx = session.beginTransaction();
         session.save(entity);

src/main/java/ru/javacourse/config/HibernateConfig.java

@@ -4,7 +4,7 @@
 import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
 import org.hibernate.cfg.Configuration;
 import org.hibernate.service.ServiceRegistry;
-import ru.javacourse.Exercise;
+import ru.javacourse.model.Exercise;
 import ru.javacourse.model.Lesson;
 import ru.javacourse.model.LessonTask;
 import ru.javacourse.model.Resource;