”;
Let”s now analyze the methods available in repository interface which we”ve created.
Repository – EmployeeRepository.java
Following is the default code of Repository to implement CRUD operations on above entity, Employee.
package com.tutorialspoint.repository;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Repository;
import com.tutorialspoint.entity.Employee;
@Repository
public interface EmployeeRepository extends CrudRepository<Employee, Integer> {
}
Now this repository contains following methods by default.
| Sr.No | Method & Description |
|---|---|
| 1 |
count(): long
returns the number of entities available. |
| 2 |
delete(Employee entity): void
deletes an entity. |
| 3 |
deleteAll():void
deletes all the entities. |
| 4 |
deleteAll(Iterable< extends Employee > entities):void
deletes the entities passed as argument. |
| 5 |
deleteAll(Iterable< extends Integer > ids):void
deletes the entities identified using their ids passed as argument. |
| 6 |
existsById(Integer id):boolean
checks if an entity exists using its id. |
| 7 |
findAll():Iterable< Employee >
returns all the entities. |
| 8 |
findAllByIds(Iterable< Integer > ids):Iterable< Employee >
returns all the entities identified using ids passed as argument. |
| 9 |
findById(Integer id):Optional< Employee >
returns an entity identified using id. |
| 10 |
save(Employee entity): Employee
saves an entity and return the updated one. |
| 11 |
saveAll(Iterable< Employee> entities): Iterable< Employee>
saves all entities passed and return the updated entities. |
”;