Lab3

build.gradle

@@ -14,6 +14,11 @@ repositories {
 
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 

src/main/java/ru/ulstu/is/cbapp/Lab3/discipline/controller/DisciplineController.java

@@ -0,0 +1,51 @@
+package ru.ulstu.is.cbapp.Lab3.discipline.controller;
+
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import ru.ulstu.is.cbapp.Lab3.discipline.model.Discipline;
+import ru.ulstu.is.cbapp.Lab3.discipline.service.DisciplineService;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/discipline")
+public class DisciplineController {
+
+    private final DisciplineService disciplineService;
+
+    public DisciplineController(DisciplineService disciplineService) {
+        this.disciplineService = disciplineService;
+    }
+
+    @GetMapping("/{id}")
+    public Discipline getDiscipline(@PathVariable Long id) {
+        return disciplineService.findDiscipline(id);
+    }
+
+    @GetMapping("/")
+    public List<Discipline> getDisciplines() {
+        return disciplineService.findAllDisciplines();
+    }
+
+    @PostMapping("/")
+    public Discipline createDiscipline(@RequestParam("disciplineName") String disciplineName) {
+        return disciplineService.addDiscipline(disciplineName);
+    }
+
+    @PatchMapping("/{id}")
+    public Discipline updateDiscipline(@PathVariable Long id,
+                             @RequestParam("disciplineName") String disciplineName) {
+        return disciplineService.updateDiscipline(id, disciplineName);
+    }
+
+    @DeleteMapping("/{id}")
+    public Discipline deleteDiscipline(@PathVariable Long id) {
+        return disciplineService.deleteDiscipline(id);
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/discipline/model/Discipline.java

@@ -0,0 +1,57 @@
+package ru.ulstu.is.cbapp.Lab3.discipline.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import java.util.Objects;
+
+@Entity
+public class Discipline {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    @Column()
+    private String disciplineName;
+
+    public Discipline() {
+    }
+
+    public Discipline(String disciplineName) {
+        this.disciplineName = disciplineName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getDisciplineName() {
+        return disciplineName;
+    }
+
+    public void setDisciplineName(String disciplineName) {
+        this.disciplineName = disciplineName;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Discipline discipline = (Discipline) o;
+        return Objects.equals(id, discipline.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Discipline{" +
+                "id=" + id +
+                ", disciplineName='" + disciplineName + '\'' +
+                '}';
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/discipline/service/DisciplineService.java

@@ -0,0 +1,64 @@
+package ru.ulstu.is.cbapp.Lab3.discipline.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.cbapp.Lab3.discipline.model.Discipline;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+@Service
+public class DisciplineService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Discipline addDiscipline(String disciplineName) {
+        if (!StringUtils.hasText(disciplineName)) {
+            throw new IllegalArgumentException("Discipline name is null or empty");
+        }
+        final Discipline discipline = new Discipline(disciplineName);
+        em.persist(discipline);
+        return discipline;
+    }
+
+    @Transactional(readOnly = true)
+    public Discipline findDiscipline(Long id) {
+        final Discipline discipline = em.find(Discipline.class, id);
+        if (discipline == null) {
+            throw new EntityNotFoundException(String.format("Discipline with id [%s] is not found", id));
+        }
+        return discipline;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Discipline> findAllDisciplines() {
+        return em.createQuery("select s from Discipline s", Discipline.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Discipline updateDiscipline(Long id, String disciplineName) {
+        if (!StringUtils.hasText(disciplineName)) {
+            throw new IllegalArgumentException("Discipline name is null or empty");
+        }
+        final Discipline currentDiscipline = findDiscipline(id);
+        currentDiscipline.setDisciplineName(disciplineName);
+        return em.merge(currentDiscipline);
+    }
+
+    @Transactional
+    public Discipline deleteDiscipline(Long id) {
+        final Discipline currentDiscipline = findDiscipline(id);
+        em.remove(currentDiscipline);
+        return currentDiscipline;
+    }
+
+    @Transactional
+    public void deleteAllDisciplines() {
+        em.createQuery("delete from Discipline").executeUpdate();
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/group/controller/GroupController.java

@@ -0,0 +1,51 @@
+package ru.ulstu.is.cbapp.Lab3.group.controller;
+
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import ru.ulstu.is.cbapp.Lab3.group.model.Group;
+import ru.ulstu.is.cbapp.Lab3.group.service.GroupService;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/group")
+public class GroupController {
+
+    private final GroupService groupService;
+
+    public GroupController(GroupService groupService) {
+        this.groupService = groupService;
+    }
+
+    @GetMapping("/{id}")
+    public Group getGroup(@PathVariable Long id) {
+        return groupService.findGroup(id);
+    }
+
+    @GetMapping("/")
+    public List<Group> getGroups() {
+        return groupService.findAllGroups();
+    }
+
+    @PostMapping("/")
+    public Group createGroup(@RequestParam("groupName") String groupName) {
+        return groupService.addGroup(groupName);
+    }
+
+    @PatchMapping("/{id}")
+    public Group updateGroup(@PathVariable Long id,
+                                 @RequestParam("groupName") String groupName) {
+        return groupService.updateGroup(id, groupName);
+    }
+
+    @DeleteMapping("/{id}")
+    public Group deleteGroup(@PathVariable Long id) {
+        return groupService.deleteGroup(id);
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/group/model/Group.java

@@ -0,0 +1,57 @@
+package ru.ulstu.is.cbapp.Lab3.group.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import java.util.Objects;
+
+@Entity
+public class Group {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    @Column()
+    private String groupName;
+
+    public Group() {
+    }
+
+    public Group(String groupName) {
+        this.groupName = groupName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getGroupName() {
+        return groupName;
+    }
+
+    public void setGroupName(String groupName) {
+        this.groupName = groupName;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Group group = (Group) o;
+        return Objects.equals(id, group.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Group{" +
+                "id=" + id +
+                ", groupName='" + groupName + '\'' +
+                '}';
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/group/service/GroupService.java

@@ -0,0 +1,64 @@
+package ru.ulstu.is.cbapp.Lab3.group.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.cbapp.Lab3.group.model.Group;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+@Service
+public class GroupService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Group addGroup(String groupName) {
+        if (!StringUtils.hasText(groupName)) {
+            throw new IllegalArgumentException("Group name is null or empty");
+        }
+        final Group group = new Group(groupName);
+        em.persist(group);
+        return group;
+    }
+
+    @Transactional(readOnly = true)
+    public Group findGroup(Long id) {
+        final Group group = em.find(Group.class, id);
+        if (group == null) {
+            throw new EntityNotFoundException(String.format("Group with id [%s] is not found", id));
+        }
+        return group;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Group> findAllGroups() {
+        return em.createQuery("select s from Group s", Group.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Group updateGroup(Long id, String groupName) {
+        if (!StringUtils.hasText(groupName)) {
+            throw new IllegalArgumentException("Group name is null or empty");
+        }
+        final Group currentGroup = findGroup(id);
+        currentGroup.setGroupName(groupName);
+        return em.merge(currentGroup);
+    }
+
+    @Transactional
+    public Group deleteGroup(Long id) {
+        final Group currentGroup = findGroup(id);
+        em.remove(currentGroup);
+        return currentGroup;
+    }
+
+    @Transactional
+    public void deleteAllGroups() {
+        em.createQuery("delete from Group").executeUpdate();
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/student/controller/StudentController.java

@@ -0,0 +1,53 @@
+package ru.ulstu.is.cbapp.Lab3.student.controller;
+
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import ru.ulstu.is.cbapp.Lab3.student.model.Student;
+import ru.ulstu.is.cbapp.Lab3.student.service.StudentService;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/student")
+public class StudentController {
+    private final StudentService studentService;
+
+
+    public StudentController(StudentService studentService) {
+        this.studentService = studentService;
+    }
+
+    @GetMapping("/{id}")
+    public Student getStudent(@PathVariable Long id) {
+        return studentService.findStudent(id);
+    }
+
+    @GetMapping("/")
+    public List<Student> getStudents() {
+        return studentService.findAllStudents();
+    }
+
+    @PostMapping("/")
+    public Student createStudent(@RequestParam("firstName") String firstName,
+                                 @RequestParam("lastName") String lastName) {
+        return studentService.addStudent(firstName, lastName);
+    }
+
+    @PatchMapping("/{id}")
+    public Student updateStudent(@PathVariable Long id,
+                                 @RequestParam("firstName") String firstName,
+                                 @RequestParam("lastName") String lastName) {
+        return studentService.updateStudent(id, firstName, lastName);
+    }
+
+    @DeleteMapping("/{id}")
+    public Student deleteStudent(@PathVariable Long id) {
+        return studentService.deleteStudent(id);
+    }
+}

src/main/java/ru/ulstu/is/cbapp/Lab3/student/model/Student.java

@@ -0,0 +1,69 @@
+package ru.ulstu.is.cbapp.Lab3.student.model;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import java.util.Objects;
+
+@Entity
+public class Student {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    @Column()
+    private String firstName;
+    private String lastName;
+
+    public Student() {
+    }
+
+    public Student(String firstName, String lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Student student = (Student) o;
+        return Objects.equals(id, student.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Student{" +
+                "id=" + id +
+                ", firstName='" + firstName + '\'' +
+                ", lastName='" + lastName + '\'' +
+                '}';
+    }
+}
+

src/main/java/ru/ulstu/is/cbapp/Lab3/student/service/StudentService.java

@@ -0,0 +1,66 @@
+package ru.ulstu.is.cbapp.Lab3.student.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.cbapp.Lab3.student.model.Student;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+@Service
+public class StudentService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Student addStudent(String firstName, String lastName) {
+        if (!StringUtils.hasText(firstName) || !StringUtils.hasText(lastName)) {
+            throw new IllegalArgumentException("Student name is null or empty");
+        }
+        final Student student = new Student(firstName, lastName);
+        em.persist(student);
+        return student;
+    }
+
+    @Transactional(readOnly = true)
+    public Student findStudent(Long id) {
+        final Student student = em.find(Student.class, id);
+        if (student == null) {
+            throw new EntityNotFoundException(String.format("Student with id [%s] is not found", id));
+        }
+        return student;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Student> findAllStudents() {
+        return em.createQuery("select s from Student s", Student.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Student updateStudent(Long id, String firstName, String lastName) {
+        if (!StringUtils.hasText(firstName) || !StringUtils.hasText(lastName)) {
+            throw new IllegalArgumentException("Student name is null or empty");
+        }
+        final Student currentStudent = findStudent(id);
+        currentStudent.setFirstName(firstName);
+        currentStudent.setLastName(lastName);
+        return em.merge(currentStudent);
+    }
+
+    @Transactional
+    public Student deleteStudent(Long id) {
+        final Student currentStudent = findStudent(id);
+        em.remove(currentStudent);
+        return currentStudent;
+    }
+
+    @Transactional
+    public void deleteAllStudents() {
+        em.createQuery("delete from Student").executeUpdate();
+    }
+}
+

src/test/java/ru/ulstu/is/cbapp/JPAStudentTests.java

@@ -0,0 +1,64 @@
+package ru.ulstu.is.cbapp;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import ru.ulstu.is.cbapp.Lab3.student.model.Student;
+import ru.ulstu.is.cbapp.Lab3.student.service.StudentService;
+
+import javax.persistence.EntityNotFoundException;
+import java.util.List;
+
+@SpringBootTest
+public class JPAStudentTests {
+    private static final Logger log = LoggerFactory.getLogger(JPAStudentTests.class);
+
+    @Autowired
+    private StudentService studentService;
+
+    @Test
+    void testStudentCreate() {
+        studentService.deleteAllStudents();
+        final Student student = studentService.addStudent("Иван", "Иванов");
+        log.info(student.toString());
+        Assertions.assertNotNull(student.getId());
+    }
+
+    @Test
+    void testStudentRead() {
+        studentService.deleteAllStudents();
+        final Student student = studentService.addStudent("Иван", "Иванов");
+        log.info(student.toString());
+        final Student findStudent = studentService.findStudent(student.getId());
+        log.info(findStudent.toString());
+        Assertions.assertEquals(student, findStudent);
+    }
+
+    @Test
+    void testStudentReadNotFound() {
+        studentService.deleteAllStudents();
+        Assertions.assertThrows(EntityNotFoundException.class, () -> studentService.findStudent(-1L));
+    }
+
+    @Test
+    void testStudentReadAll() {
+        studentService.deleteAllStudents();
+        studentService.addStudent("Иван", "Иванов");
+        studentService.addStudent("Петр", "Петров");
+        final List<Student> students = studentService.findAllStudents();
+        log.info(students.toString());
+        Assertions.assertEquals(students.size(), 2);
+    }
+
+    @Test
+    void testStudentReadAllEmpty() {
+        studentService.deleteAllStudents();
+        final List<Student> students = studentService.findAllStudents();
+        log.info(students.toString());
+        Assertions.assertEquals(students.size(), 0);
+    }
+}
+