How to map a nested JSON Object as an SQL table row in Spring Boot - spring

Question

I'm using Spring to develop APIs along with JPA. I'm handling a POST request that accepts #RequestBody as a JSON object that looks like this-
{
"id": "323",
"name": "Sam",
"gpsLocation": {
"latitude": 66.7492558,
"longitude": 97.133258
}
}
And an SQL User Table that has the following columns-
id | name | latitude | longitude
Is there a way in Spring to map this nested json object directly to these table columns?
This is what my User.java and GpsLocation.java entity classes look like right now-
#Table(name = "user")
#Entity
public class UnderObservation {
#Column(name = "name", nullable = false)
private String name;
#Id
#Column(name = "id", nullable = false)
private String userID;
private GpsLocation location;
}
#Entity
public class GpsLocation {
#Column(name = "Latitude", nullable = false)
private Double Latitude;
#Column(name = "Longitude", nullable = false)
private Double Longitude;
}
I'm looking for a way to "flatten/unwrap" GpsLocation class so that it directly fits into the User table instead of having a separate table for GpsLocation.
I can not change the JSON Structure because some other No SQL Databases are using this. Also, I'm new to Spring!

Answer 1

The best practice here is using DTO data transfer object that hold the request body
and map it to the user object using external library like mapstruct, ObjectMapper or even do it manually
the DTO is a pojo Object carries data between processes

Answer 2

Try This way with a Constructor:
#Getter
#Setter
#Table(name = "user")
#Entity
public class UnderObservation {
#Column(name = "name", nullable = false)
private String name;
#Id
#Column(name = "id", nullable = false)
private String userID;
#Column(name = "latitude", nullable = false)
private Double latitude;
#Column(name = "longitude", nullable = false)
private Double longitude;
private GpsLocation location;
UnderObservation(String name, String userID, GpsLocation location) {
this.name = name;
this.userID = userID;
this.location = location;
this.latitude = this.location.getLatitude();
this.longitude = this.location.getLongitude();
}
}