Create a model and insert value with a #Query - mysql

Question

i have this class:
#Getter
#Setter
#ToString
#AllArgsConstructor
#NoArgsConstructor
public class ViewOrderRTO {
private List<LineProductModel> products;
private OrderModel order;
}
that i use for display data saved in db. LineProductModel is a class that has these field: total price, quantity,id, a #ManyToOne relationship with productModel and a #Many to one relationship with OrderModel.
The question is: can i use #Query in something like this "SELECT new alongpath.ViewOrderRTO(....) ..." and insert a list of lineProduct and the other fields all in one query? or i have to split the work and get all the single LineProductModel and put in a list first and then create the ViewModel?
btw is a spring boot project and i'm using mysql

Answer 1

I "solved" the problem removing the #ManyToOne mapping inside the LineProductModel and adding the #OneToMany mapping in the Order Model now i have this:
#Entity
#Table(name = "order_commission")
#Getter
#Setter
#ToString
#AllArgsConstructor
#NoArgsConstructor
public class OrderModel {
#Id
#SequenceGenerator(name = "order_sequence",
sequenceName = "order_sequence",
initialValue = 0,
allocationSize = 1
)
#GeneratedValue(strategy = GenerationType.SEQUENCE,
generator = "order_sequence")
private Long id;
#OneToMany(cascade = CascadeType.ALL,
fetch = FetchType.EAGER,
orphanRemoval = true)
private List<LineProductModel> linePoducts;
private BigDecimal total;
private LocalDateTime orderedAt;
#ManyToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "fk_user")
private UserModel user;
public OrderModel(List<LineProductModel> lineProducts,
BigDecimal total,
LocalDateTime orderedAt,
UserModel user) {
this.linePoducts = lineProducts;
this.total = total;
this.orderedAt = orderedAt;
this.user = user;
}
}
and this is the json i get while performing a #GetMapping:
{
"id": 0,
"linePoducts": [
{
"id": 0,
"quantity": 2,
"lineProductPrice": 6,
"product": {
"id": 0,
"eanCode": "1111111111111",
"name": "pipo",
"price": 3,
"quantity": 8,
"weight": 10,
"description": "test",
"category": {
"id": 0,
"name": "cibo"
}
}
},
{
"id": 1,
"quantity": 7,
"lineProductPrice": 21,
"product": {
"id": 1,
"eanCode": "2111111111111",
"name": "pipobevanda",
"price": 3,
"quantity": 3,
"weight": 10,
"description": "test",
"category": {
"id": 1,
"name": "bevanda"
}
}
},
{
"id": 2,
"quantity": 1,
"lineProductPrice": 3,
"product": {
"id": 2,
"eanCode": "3111111111111",
"name": "pipoverdura",
"price": 3,
"quantity": 9,
"weight": 10,
"description": "test",
"category": {
"id": 2,
"name": "verdura"
}
}
}
],
"total": 0,
"orderedAt": "2022-08-10T20:48:15",
"user": {
"id": 0,
"firstName": "-------",
"lastName": "------",
"email": "--------",
"password": "------",
"countryOfResidence": "italy",
"birthdate": "-------",
"balance": 100
}
}
i have to make some changes about the information that displays, but is there a better solution or this one is ok?