Spring data. Familiar and consistent programming model for data access презентация

Spring data
Familiar and consistent programming model for data access.

Features
Powerful repositories.
Dynamic query derivation from method names.
Easy spring integration.

Modules
Spring data commons.
Spring data jpa.
Spring data mongodb.
Spring data redis.
Spring data cassandra.
Spring data gemfire.
Spring data rest.

Dependency
org.springframework.boot
spring-boot-starter-data-jpa

Repository interfaces
-Repository
-CrudRepository
-PagingAndSortingRepository
-JpaRepository

Example
@Repository
public interface EmployeeRepository extends CrudRepository
{
Employee findByFirstName(String firstName);
List findByLastName(String lastName);
}

Method naming convention
find…By, read…By, query…By, count…By, and get…By:
findDistinctPeopleByLastnameOrFirstname
findByLastnameAndFirstnameAllIgnoreCase
findByLastnameOrderByFirstnameDesc
queryFirst10ByLastname
findTop3ByLastname

Async repositories
Future
findByUsername(String username);
CompletableFuture
findByUsername(String username);