ЛР3 без доп задания

src/main/java/ru/ulstu/is/lab1/DataBase/model/Collection.java

@@ -42,8 +42,12 @@ public class Collection {
         if (films == null){
             films = new ArrayList<>();
         }
+        if (!this.films.contains(film)) {
             this.films.add(film);
+            film.addCollections(this);
         }
+    }
+
 
     public void removeFilm(Film film){
         if(films != null){

src/main/java/ru/ulstu/is/lab1/DataBase/model/Film.java

@@ -1,5 +1,8 @@
 package ru.ulstu.is.lab1.DataBase.model;
 
+import org.hibernate.annotations.LazyCollection;
+import org.hibernate.annotations.LazyCollectionOption;
+
 import javax.persistence.*;
 
 import java.util.List;
@@ -12,12 +15,15 @@ public class Film {
     @GeneratedValue(strategy = GenerationType.AUTO)
     private Long id;
     private String name;
-    @ManyToMany(fetch = FetchType.EAGER)
+    @ManyToMany
+    @LazyCollection(LazyCollectionOption.FALSE)
     @JoinTable(name="films_genres",
             joinColumns = @JoinColumn(name="film_id"),
             inverseJoinColumns = @JoinColumn(name="genre_id")
     )
     private List<Genre> genres;
+    @ManyToMany(fetch = FetchType.EAGER, mappedBy = "films")
+    private List<Collection> collections;
 
     public Film() {
     }
@@ -42,6 +48,7 @@ public class Film {
         if (genres == null){
             genres = new ArrayList<>();
         }
+        if (!this.genres.contains(genre))
             this.genres.add(genre);
     }
 
@@ -55,6 +62,16 @@ public class Film {
         return genres;
     }
 
+    public List<Collection> getCollections() {
+        return collections;
+    }
+
+    public void addCollections(Collection collection) {
+        if(this.collections==null)
+            collections=new ArrayList<>();
+        collections.add(collection);
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

src/main/java/ru/ulstu/is/lab1/DataBase/model/Genre.java

@@ -11,8 +11,6 @@ public class Genre {
     @GeneratedValue(strategy = GenerationType.AUTO)
     private Long id;
     private String name;
-    @ManyToMany(fetch = FetchType.EAGER, mappedBy = "genres")
-    private List<Film> films;
 
     public Genre() {
     }

src/main/java/ru/ulstu/is/lab1/DataBase/service/FilmService.java

@@ -9,6 +9,8 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.StringUtils;
 
+import java.math.BigInteger;
+import java.util.ArrayList;
 import java.util.List;
 
 @Service
@@ -89,4 +91,6 @@ public class FilmService {
     public void deleteAllFilms() {
         em.createQuery("delete from Film").executeUpdate();
     }
+
+    //сделать запрос отбора фильмов по жанру
 }

src/test/java/ru/ulstu/is/lab1/JpaFilmTests.java

@@ -12,6 +12,7 @@ import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 
+import java.math.BigInteger;
 import java.util.List;
 
 @SpringBootTest