I have a bit project using JAVA with spring and JPA. My entities are quite complicated, here are they:
UserEntity:
private @NonNull @Id String email;
private String fullName;
private String gender;
@OneToMany(mappedBy = "user",fetch = FetchType.LAZY)
private Set<UserIngredient> userIngredients;
IngredientEntity:
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Id private Long id;
@Column(nullable =false)
private String name;
private String ingredientGroup;
@OneToMany(mappedBy = "ingredient",fetch = FetchType.LAZY)
private Set<UserIngredient> userIngredients;
@OneToMany(mappedBy = "recipe",fetch = FetchType.LAZY)
private Set<RecipeIngredient> recipeIngredients;
UserIngredient:
@EmbeddedId
private UserIngredientKey id;
@ManyToOne(fetch = FetchType.LAZY)
@MapsId("userEmail")
@JoinColumn(name = "user_email")
private UserEntity user;
@ManyToOne(fetch = FetchType.LAZY)
@MapsId("ingredientId")
@JoinColumn(name = "ingredient_id")
private IngredientEntity ingredient;
private String type;
RecipeEntity:
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Id
private long recipeId;
@Column(unique = true)
private @NonNull String name;
private String prepartion;
private String createdBy;
@OneToMany(mappedBy = "recipe", fetch = FetchType.LAZY)
private Set<RecipeIngredient> recipeIngredients;
@OneToMany(mappedBy = "menu", fetch = FetchType.LAZY)
private Set<MenuRecipe> menuRecipe;
RecipeIngredient:
@EmbeddedId
private RecipeIngredientId id;
@ManyToOne(fetch = FetchType.LAZY)
@MapsId("recipeId")
@JoinColumn(name = "recipe_id")
private RecipeEntity recipe;
@ManyToOne(fetch = FetchType.LAZY)
@MapsId("ingredientId")
@JoinColumn(name = "ingredient_id")
private IngredientEntity ingredient;
private double amount;
MenuEntity:
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Id private Long id;
private Date timestamp;
private short numOfErrors;
@OneToMany(mappedBy = "recipe", fetch = FetchType.LAZY)
private Set<MenuRecipe> menuRecipes;
MenuRecipe:
@EmbeddedId
private MenuRecipeId id;
@ManyToOne(fetch = FetchType.LAZY)
@MapsId("recipeId")
@JoinColumn(name = "recipe_id")
private RecipeEntity recipe;
@ManyToOne(fetch = FetchType.LAZY)
@MapsId("menuId")
@JoinColumn(name = "menu_id")
private MenuEntity menu;
private Boolean match;
Now, my problem is that I try to create menu by doing:
// get All user FORBIDDEN ingredients
List<IngredientEntity> uiArr = userIngrdientsDAL
.findAllByUser_EmailAndType(userEmail, IngredientTypeEnum.FORBIDDEN.name(), PageRequest.of(0, 1000))
.stream().map(ui -> ui.getIngredient())
.collect(Collectors.toList());
// get all appropriate recipes
List<RecipeEntity> recipeEnityties = recipeDAL.findDistinctByRecipeIngredients_IngredientNotIn(uiArr);
Set<MenuRecipe> recipies = new HashSet<>();
menu.setMenuRecipes(recipies);
for (int i = 0; i < days; i++) {
RecipeEntity recipe =recipeEnityties.remove(new Random().nextInt(recipeEnityties.size()));
recipies.add(createMenuRecipe(menu.getId(), recipe.getRecipeId()));
}
And I felt on the add line with overflow of SELECT queries. Any ideas?