Lab03 Fix

src/main/java/ru/ulstu/is/sbapp/socialNetwork/models/Community.java

@@ -0,0 +1,50 @@
+package ru.ulstu.is.sbapp.socialNetwork.models;
+
+import javax.persistence.*;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Community {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String name;
+
+    @ManyToMany(fetch = FetchType.EAGER, mappedBy = "communities")
+    private List<UserModel> users;
+
+    public Community() {
+    }
+
+    public Community(String name){
+        this.name = name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+    public List<UserModel> getUsers() {
+        return users;
+    }
+    public Long getId() {
+        return id;
+    }
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                '}';
+    }
+}
+

src/main/java/ru/ulstu/is/sbapp/socialNetwork/models/Music.java

@@ -0,0 +1,49 @@
+package ru.ulstu.is.sbapp.socialNetwork.models;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import java.util.Objects;
+
+@Entity
+public class Music {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    public String name;
+
+
+    public Music() {
+    }
+
+    public Music(String name){
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+
+    public void setName(String name) {
+        this.name = name;
+    }
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                '}';
+    }
+}
+

src/main/java/ru/ulstu/is/sbapp/socialNetwork/models/UserModel.java

@@ -0,0 +1,80 @@
+package ru.ulstu.is.sbapp.socialNetwork.models;
+import org.hibernate.annotations.LazyCollection;
+import org.hibernate.annotations.LazyCollectionOption;
+
+import javax.persistence.*;
+import java.util.List;
+
+@Entity
+public class UserModel {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+
+    private Long id;
+    private String name;
+    private String city;
+    //поиск людей по городу
+
+    @ManyToMany
+    @LazyCollection(LazyCollectionOption.FALSE)
+    @JoinTable(name="usermodels_musics",
+            joinColumns = @JoinColumn(name="usermodel_id"),
+            inverseJoinColumns = @JoinColumn(name="music_id")
+    )
+    private List<Music> musics;
+
+    @ManyToMany
+    @LazyCollection(LazyCollectionOption.FALSE)
+    @JoinTable(name="usermodels_communities",
+            joinColumns = @JoinColumn(name="usermodel_id"),
+            inverseJoinColumns = @JoinColumn(name="community_id")
+    )
+    private List<Community> communities;
+
+    public UserModel(){
+    }
+    public UserModel(String name){
+        this.name = name;
+    }
+    public UserModel(String name, String city){
+        this.name = name;
+        this.city = city;
+    }
+
+    public Long getId(){return id;}
+
+    public String getName(){return name;}
+    public void setName(String firstName){this.name = firstName;}
+
+
+    public void addMusic(Music g) {
+        musics.add(g);
+    }
+    public List<Music> getMusics() {
+        return musics;
+    }
+
+    public void addCommunity(Community g) {
+        communities.add(g);
+    }
+    public List<Community> getGroups() {
+        return communities;
+    }
+
+    public void setCity(String city){
+        this.city = city;
+    }
+    public String getCity(){
+        return city;
+    }
+
+
+    @Override
+    public String toString() {
+        return "User{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", city='" + city + '\'' +
+                '}';
+    }
+}

src/main/java/ru/ulstu/is/sbapp/socialNetwork/services/CommunityService.java

@@ -0,0 +1,78 @@
+package ru.ulstu.is.sbapp.socialNetwork.services;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.sbapp.socialNetwork.models.Community;
+
+@Service
+public class CommunityService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Community addCommunity(String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Student name is null or empty");
+        }
+
+        Community group = new Community(name);
+
+        em.persist(group);
+        return em.find(Community.class, group.getId());
+    }
+    @Transactional
+    public Community addCommunity(String name, String surname, String path) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Student name is null or empty");
+        }
+
+        Community group = new Community(name);
+
+        em.persist(group);
+        return em.find(Community.class, group.getId());
+    }
+
+    @Transactional(readOnly = true)
+    public Community findCommunity(Long id) {
+        final Community group = em.find(Community.class, id);
+        if (group == null) {
+            throw new EntityNotFoundException(String.format("Community with id [%s] is not found", id));
+        }
+        return group;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Community> findAllCommunitys() {
+        return em.createQuery("select f from Community f", Community.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Community updateCommunity(Long id, String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Community name is null or empty");
+        }
+        final Community currentCommunity = findCommunity(id);
+        if(name != null) currentCommunity.setName(name);
+        return em.merge(currentCommunity);
+    }
+
+    @Transactional
+    public Community deleteCommunity(Long id) {
+        final Community currentCommunity = findCommunity(id);
+        em.remove(currentCommunity);
+        return currentCommunity;
+    }
+
+    @Transactional
+    public void deleteAllCommunitys() {
+        em.createQuery("delete from Community").executeUpdate();
+    }
+
+}
+

src/main/java/ru/ulstu/is/sbapp/socialNetwork/services/MusicService.java

@@ -0,0 +1,69 @@
+package ru.ulstu.is.sbapp.socialNetwork.services;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.sbapp.socialNetwork.models.Music;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+
+@Service
+public class MusicService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public Music addMusic(String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Music name is null or empty");
+        }
+
+        Music music = new Music(name);
+
+        em.persist(music);
+        return em.find(Music.class, music.getId());
+    }
+
+    @Transactional(readOnly = true)
+    public Music findMusic(Long id) {
+        final Music music = em.find(Music.class, id);
+        if (music == null) {
+            throw new EntityNotFoundException(String.format("Music with id [%s] is not found", id));
+        }
+        return music;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Music> findAllMusics() {
+        return em.createQuery("select g from Music g", Music.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public Music updateMusic(Long id, String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("Music name is null or empty");
+        }
+        final Music currentMusic = findMusic(id);
+        currentMusic.setName(name);
+        return em.merge(currentMusic);
+    }
+
+    @Transactional
+    public Music deleteMusic(Long id) {
+        final Music currentMusic = findMusic(id);
+        em.remove(currentMusic);
+        return currentMusic;
+    }
+
+    @Transactional
+    public void deleteAllMusics() {
+        em.createQuery("delete from Music").executeUpdate();
+    }
+
+}
+

src/main/java/ru/ulstu/is/sbapp/socialNetwork/services/UserService.java

@@ -0,0 +1,110 @@
+package ru.ulstu.is.sbapp.socialNetwork.services;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.util.StringUtils;
+import ru.ulstu.is.sbapp.socialNetwork.models.Community;
+import ru.ulstu.is.sbapp.socialNetwork.models.Music;
+import ru.ulstu.is.sbapp.socialNetwork.models.UserModel;
+
+import javax.persistence.EntityManager;
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceContext;
+import javax.persistence.Query;
+import java.util.List;
+
+@Service
+public class UserService {
+    @PersistenceContext
+    private EntityManager em;
+
+    @Transactional
+    public UserModel addUser(String name, String city) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("User name is null or empty");
+        }
+
+        UserModel user = new UserModel(name, city);
+        em.persist(user);
+        return em.find(UserModel.class, user.getId());
+    }
+    @Transactional
+    public UserModel addMusic(Long userId, Long musicId) {
+        final UserModel user = em.find(UserModel.class, userId);
+
+        if (user == null) {
+            throw new EntityNotFoundException(String.format("UserModel with id [%s] is not found", userId));
+        }
+
+        final Music music = em.find(Music.class, musicId);
+        if (music == null) {
+            throw new EntityNotFoundException(String.format("Music with id [%s] is not found", musicId));
+        }
+
+        user.addMusic(music);
+        return em.merge(user);
+    }
+    @Transactional
+    public UserModel addCommunity(Long userId, Long communityId) {
+        final UserModel user = em.find(UserModel.class, userId);
+        if (user == null) {
+            throw new EntityNotFoundException(String.format("UserModel with id [%s] is not found", userId));
+        }
+
+        final Community community = em.find(Community.class, communityId);
+        if (community == null) {
+            throw new EntityNotFoundException(String.format("Music with id [%s] is not found", communityId));
+        }
+
+        user.addCommunity(community);
+        return em.merge(user);
+    }
+
+    @Transactional(readOnly = true)
+    public UserModel findUser(Long id) {
+        final UserModel user = em.find(UserModel.class, id);
+        if (user == null) {
+            throw new EntityNotFoundException(String.format("User with id [%s] is not found", id));
+        }
+        return user;
+    }
+
+
+    @Transactional(readOnly = true)
+    public List<UserModel> findUserByCity(String city){
+        Query query = em.createQuery("select u from UserModel u where u.city = :city",
+                UserModel.class).setParameter("city", city);
+        List<UserModel>  result = query.getResultList();
+        return result;
+    }
+
+    @Transactional(readOnly = true)
+    public List<UserModel> findAllUsers() {
+        return em.createQuery("select f from UserModel f", UserModel.class)
+                .getResultList();
+    }
+
+    @Transactional
+    public UserModel updateUser(Long id, String name) {
+        if (!StringUtils.hasText(name)) {
+            throw new IllegalArgumentException("User name is null or empty");
+        }
+        final UserModel currentUser = findUser(id);
+        currentUser.setName(name);
+        return em.merge(currentUser);
+    }
+
+    @Transactional
+    public UserModel deleteUser(Long id) {
+        final UserModel currentUser = findUser(id);
+        em.remove(currentUser);
+        return currentUser;
+    }
+
+    @Transactional
+    public void deleteAllUsers() {
+        em.createQuery("delete from UserModel").executeUpdate();
+    }
+
+
+}

src/test/java/ru/ulstu/is/sbapp/JpaCommunityTest.java

@@ -90,3 +90,4 @@ public class JpaCommunityTest {
         Assertions.assertEquals(findCommunity.getUsers().get(0).getId(), user.getId());
     }
 }
+

src/test/java/ru/ulstu/is/sbapp/JpaMusicTest.java

@@ -74,3 +74,4 @@ public class JpaMusicTest {
         Assertions.assertThrows(EntityNotFoundException.class, () -> userService.findUser(music.getId()));
     }
 }
+

src/test/java/ru/ulstu/is/sbapp/JpaUserTest.java

@@ -1,4 +1,5 @@
 package ru.ulstu.is.sbapp;
+
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.slf4j.Logger;