Computer scienceBackendSpring BootSpring Data

Property expressions

Theory

Searching for a model

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You have a table in a database based on the following class (the table's name and fields are the same):

Java
@Entity
public class Car {
    
    @Id
    @GeneratedValue
    private long id;
    private String model;
    private int year;

    // constructor, getters, setters
}
Kotlin
@Entity
class Car (
    @Id
    @GeneratedValue
    var id: Long = 0,
    var model: String = "",
    var year: Int = 0
)

You want to fetch all the car objects of a certain model from the database. Which method do you define in the repository?

Java

1) List<Car> findByModel(String model)

2) Optional<Car> findByModel(String model)

3) List<Car> searchByModel(String model)

4) Optional<Car> searchByModel(String model)

Kotlin

1) findByModel(model: String): List<Car>

2) findByModel(model: String): Car?

3) searchByModel(model: String): List<Car>

4) searchByModel(model: String): Car?

Select one or more options from the list
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