BAEL-2809 Get all Data in a table with Hibernate (eugenp#5670)

* BAEL-2809 Get all Data in a table with Hibernate * Delete transaction.log * Update FindAll.java * Update FindAllTest.java * Update FindAll.java * Update FindAllTest.java * Rename FindAllTest.java to FindAllUnitTest.java

Author: enpy303

persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/findall/FindAll.java

@@ -0,0 +1,35 @@
+package com.baeldung.hibernate.findall;
+
+import java.util.List;
+
+import javax.persistence.TypedQuery;
+import javax.persistence.criteria.CriteriaBuilder;
+import javax.persistence.criteria.CriteriaQuery;
+import javax.persistence.criteria.Root;
+
+import org.hibernate.Session;
+
+import com.baeldung.hibernate.pojo.Student;
+
+public class FindAll {
+
+ private Session session;
+
+ public FindAll(Session session) {
+ super();
+ this.session = session;
+ }
+
+ public List<Student> findAllWithJpql() {
+ return session.createQuery("SELECT a FROM Student a", Student.class).getResultList();
+ }
+
+ public List<Student> findAllWithCriteriaQuery() {
+ CriteriaBuilder cb = session.getCriteriaBuilder();
+ CriteriaQuery<Student> cq = cb.createQuery(Student.class);
+ Root<Student> rootEntry = cq.from(Student.class);
+ CriteriaQuery<Student> all = cq.select(rootEntry);
+ TypedQuery<Student> allQuery = session.createQuery(all);
+ return allQuery.getResultList();
+ }
+}

persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/findall/FindAllUnitTest.java

@@ -0,0 +1,63 @@
+package com.baeldung.hibernate.findall;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.IOException;
+import java.util.List;
+
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.baeldung.hibernate.HibernateUtil;
+import com.baeldung.hibernate.pojo.Student;
+
+public class FindAllUnitTest {
+
+ private Session session;
+ private Transaction transaction;
+ 
+ private FindAll findAll;
+
+ @Before
+ public void setUp() throws IOException {
+
+ session = HibernateUtil.getSessionFactory().openSession();
+ transaction = session.beginTransaction();
+ findAll = new FindAll(session);
+
+ session.createNativeQuery("delete from Student").executeUpdate();
+
+ Student student1 = new Student();
+ session.persist(student1);
+
+ Student student2 = new Student();
+ session.persist(student2);
+
+ Student student3 = new Student();
+ session.persist(student3);
+
+ transaction.commit();
+ transaction = session.beginTransaction();
+ }
+
+ @After
+ public void tearDown() {
+ transaction.rollback();
+ session.close();
+ }
+
+ @Test
+ public void givenCriteriaQuery_WhenFindAll_ThenGetAllPersons() {
+ List<Student> list = findAll.findAllWithCriteriaQuery();
+ assertEquals(3, list.size());
+ }
+ 
+ @Test
+ public void givenJpql_WhenFindAll_ThenGetAllPersons() {
+ List<Student> list = findAll.findAllWithJpql();
+ assertEquals(3, list.size());
+ }
+}