feito por um brasileiro para desenvolvedores do mundo inteiro.

Make your API better, create your own pattern and go to the stars!

• Main features.
• Unit tests.
• Complete documentation guide.

Continuous Integration

How is this?

Boilerplate code? No more.

The Maker project is an abstraction to speed up the development time of RestAPI's using Spring Framework.

This project provides you with a series of pre-coded interfaces.

You can build your API in 10 minutes, with GET/POST/PUT/PATCH/DELETE methods and Pageable search.

What kind of technologies are used in this project?

• Spring Framework
• JPA on Maker SQL
• QueryDsl on Maker Mongo
• JpaSpecificationExecutor or QueryDsl with a easy'ly usage with SpecificationBase<T>

You can see what this project doo on "Maker.postman_collection.json" inside the project. Download the sample (https://github.com/gustavovitor/maker-example/tree/maker-mongo), run and call API methods from Postman. Enjoy :)

Maven Dependency

<dependency>
    <groupId>com.github.gustavovitor</groupId>
    <artifactId>maker-sql</artifactId>
    <version>1.4.0</version>
</dependency>

..or, you can use maker-mongo for MongoDB usage.

Let me show how this work

Note: this project use Spring Specification to make find on your database and Spring Security basic dependencies, so, if you want to use this without Spring Security, you need to disable SecurityAutoConfiguration.class on your @SpringBootApplication.

On normal RestAPI development using Spring Framework, you should be to create a domain/model, right? ..for example (using Lombok @Data):

@Data
@Entity
class Car {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    
    private String model; 
}

Now, you want to create your repository, right? In this moment, Maker can help you.

public interface CarRepository extends RepositoryMaker<Car, Long> {}

Awesome, you extends RepositoryMaker.class because RepositoryMaker.class implements all thinks JpaRepository implements and more, the JpaSpecificationExecutor.class.

Now, you need to create a Specification Object for this entity, thats step is required for ServiceMaker.class and ResourceMaker.class works well.

public class CarSpecification extends SpecificationBase<Car> {

    public CarSpecification(Car car) throws ReflectionException {
        super(car);
    }

    @Override
    public List<Predicate> predicate(Root<Car> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder, Car object) {
        List<Predicate> predicates = new ArrayList<>();

        if (nonNull(object.getModel())) {
            predicates.add(criteriaBuilder.like(root.get("model"), "%" + object.getModel() + "%"));
        }

        return predicates;
    }
}

Alright, Spring Framework call Specification.toPredicate and call predicate and you can make your conditional search here, its very easy.

Now, you want to create a service to provide access to your database object.

@Service
public class CarService extends ServiceMaker<CarRepository, Car, Long, Car, CarSpecification> {}

Car, Long, Car? What?

In your specification object you can specify anything, as long as that thing extends the entity.

The ServiceMaker.class and ResourceMaker.class needs to know what is the SPO (Specification Object).

The generic parameters are these, in order:

• 1. R, the Repository.
• 2. T, the Entity.
• 3. ID, the type of entity ID.
• 4. SPO, the Specification Object.
• 5. SP, the Specification.

And now? What my projects do? Now your project provide a CarService, with a lot of pre-coded methods, includes findById, findAll, findAllPageable, insert update, patch, delete.

So i need to create one resource to make my API? Yes, and Maker mades it for you!

@RestController
@RequestMapping("/car")
public class CarResource extends ResourceMaker<CarService, Car, Long, Car> {}

If your API uses Spring @PreAuthorize resource, you need to extends the SecurityResourceMaker.class and override and make public the role methods.

Now you have a lot of RestAPI methods and you can call them. Open your terminal and make a call on your server:port/context/car and enjoy!

One example lives on https://github.com/gustavovitor/maker-example :)

For a Maker Mongo example thats lives on https://github.com/gustavovitor/maker-example/tree/maker-mongo :)

Any question/bugs/problems/feature? Open an issue and contribute.