mohamed-gara

public final class Person {

  private final String firstName;
  private final String lastName;
  private final Integer age;

  Person(String firstName, String lastName, Integer age) {
    this.firstName = firstName;
    this.lastName = lastName;
    this.age = age;

mohamed-gara

public class Person {
  String firstName;
  String lastName;
  Integer age;
}

mohamed-gara

@RestController
@RequiredArgsConstructor
public class CustomArgumentResolverController {
    private final PersonRepository personRepository;

    @Fetch
    public Person fetchPerson(@PathVariable String id) {
        return personRepository.findBy(id);
    }

mohamed-gara

@Test
public void should_patch_the_person_name() throws Exception {
    when(personRepository.findBy(id)).thenReturn(personOldVersion());

    mockMvc.perform(patchPersonName())
           .andExpect(status().isOk());

    verify(personRepository).save(personNewVersion());
}

mohamed-gara

@RestController
@RequiredArgsConstructor
public class PatchUsingModelAttributeController {
    private final PersonRepository personRepository;

    @ModelAttribute
    public Person populatePerson(@PathVariable String id) {
        return personRepository.findBy(id);
    }

mohamed-gara

@Data
@Wither
@Builder
@AllArgsConstructor
public class PersonDto {
    private String id;
    private String name;
    private Integer age;
}

mohamed-gara

@Data
@Wither
@Builder
@AllArgsConstructor
public class Person {
    private String id;
    private String name;
    private Integer age;
}

mohamed-gara

import {Order} from './order';
import {OrderDiscount} from './order-discount';

export class Customer {
  
  constructor(public orders: Order[]) {}

  orderDiscount(): OrderDiscount {
     return new OrderDiscount(this.orders.length);
  }

mohamed-gara

import {OrderDiscount} from './order-discount';

export class Order {   
  
  constructor(public amount: number, public discount: OrderDiscount) {}

  discountedAmount() {
    return (100 - this.discount.discount()) * this.amount;
  }
}

mohamed-gara

export class OrderDiscount {

  constructor(private ordersNumber: number) {}
   
  discount() {
    if (this.ordersNumber > 5) {
      return 10;
    } else {
      return 3;
    }