TDC 2015 - Java: from old school to modern art!
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Presentation about how we use Java at ContaAzul, since the old times until nowadays.
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TDC 2015 - Java: from old school to modern art!
- 1. Globalcode – Open4education Java – From old school to modern art Marcos Roberto Ferreira Engenheiro de Software - ContaAzul
- 2. • Engenheiro de Software na ContaAzul • Formado em Sistemas de Informação pela UDESC • +12 anos XP dev web • +10 anos XP Java • Colaborador do GUJavaSC github.com/Marcos about.me/marcos.ferreira QUEM SOU EU? MARCOS ROBERTO FERREIRA marcos@contaazul.com
- 3. old school: ContaAzul antes de ser ContaAzul modern art: ContaAzul Startup APIs/Projetos usados no ContaAzul AGENDA… 1 2 3
- 4. O que é ContaAzul?
- 5. 5
- 7. 7 MPE’s que já utilizaram o ContaAzul até agora +350.000 Novas empresas que começam a usar todo mês 23.000
- 8. 8 Número de transações financeiras 15.000.000 48.000.000.000 Total de transações Vendas criadas 2.500.000 ~4.000.000 Contatos na nossa plataforma
- 9. 9 Tudo isso em 3 anos
- 15. public class MemberServlet extends HTTPServlet{ public void doGet(…) throws IOException{ List<Member> members = memberService.list(); request.setAttribute(“members”, members); String jsp = “member.jsp"; request.getRequestDispatcher( ) .forward( request, response ); } }
- 16. <%@ page contentType="text/html; charset=UTF-8"%> <html> <body> <c:forEach var="member" items=“{member}”> ${member} <br/> </c:forEach> </body> </body>
- 17. /app <%viewA%>ControllerA BusinessObjectA <%viewB%>ControllerB BusinessObjectB ServletController
- 19. 19
- 26. 26
- 28. Como resolver o problema? http://sustainablesurf.org/wp-content/uploads/2011/05/Me-and-shaping-dust.jpg
- 30. Mudar de stack?
- 31. Ou evoluir dentro da tecnologia?
- 33. APIs e projetos no ContaAzul
- 34. 34 lombok
- 35. 35 private String name; public String getName() { return name; } public void setName(String name) { this.name = name; }
- 36. 36 private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } @Getter @Setter private String name;
- 37. 37 @Getter @Setter public class Member { private Long id; private String name; }
- 38. 38 @Getter @Setter public class Member { private Long id; private String name; } @Getter @Setter @ToString @EqualsAndHashCode public class Member { private Long id; private String name; }
- 39. 39 @Getter @Setter @ToString @EqualsAndHashCode public class Member { private Long id; private String name; }
- 40. 40 @Getter @Setter @ToString @EqualsAndHashCode public class Member { private Long id; private String name; } @Data public class Member { private Long id; private String name; }
- 41. 41 public class Member { private Long id; private String name; public Member() {} public Member(Long id, String name) { super(); this.id = id; this.name = name; } }
- 42. 42 public class Member { private Long id; private String name; public Member() {} public Member(Long id, String name) { super(); this.id = id; this.name = name; } } @NoArgsConstructor @AllArgsConstructor public class Member { private Long id; private String name; }
- 44. 44 @Builder public class Member { private Long id; private String name; } Member.builder() .id(1L) .name(“Marcos") .build();
- 45. 45 javaee
- 49. 49 @Path("user") @Produces(APPLICATION_JSON) @Consumes(APPLICATION_JSON) public class UserResource { @POST public User save(User user){ return userService.save(user); } @GET public List<User> list(){ return userService.list(); } } REST + JSON
- 50. 50 @PersistenceContext private EntityManager entityManager; private void save(Long userId, User user) { if (userId == null) entityManager.persist(user); else { user.setId(userId); entityManager.merge(user); } } persitência de dados
- 51. 51 @Stateless public class UserService { @TransactionAttribute(REQUIRES_NEW) public void save(Long userId, User user) { … } } transações @Stateless public class UserService { public void save(Long userId, User user) { … } }
- 52. 52 @Stateless public class PaymentService { @Asynchronous public void update(User user){ … } } @Inject private PaymentService paymentService; public User save(User user) { paymentService.update(user); } processamento assíncrono
- 53. 53 @Stateless public class UserJob { @Schedule(hour="*",minute="*",second="*/20") public void schedule(){ … } } agendamento
- 54. 54 querydsl
- 55. 55 new JPAQuery(entityManager) .from(member) .list(member); import static org.gujavasc.entities.QMember.member;
- 56. 56 new JPAQuery(entityManager).from(post) .innerJoin(post.member, member) .list(QPost.create(member.name, post.title, post.content)); import static org.gujavasc.entities.QMember.member; import static org.gujavasc.entities.QPost.post;
- 57. 57 new JPAQuery(entityManager).from(post) .leftJoin(post.member, member) .list(QPost.create(member.name, post.title, post.content)); import static org.gujavasc.entities.QMember.member; import static org.gujavasc.entities.QPost.post;
- 58. 58 new JPAQuery(entityManager).from(post) .leftJoin(post.member, member) .where(post.status.eq(DRAFT)) .list(QPost.create(member.name, post.title, post.content)); import static org.gujavasc.entities.QMember.member; import static org.gujavasc.entities.QPost.post;
- 59. 59 new JPAUpdateClause(entityManager, post) .set(post.status, Status.PUBLISHED) .execute(); import static org.gujavasc.entities.QPost.post;
- 60. 60 new JPADeleteClause(entityManager,post) .where(post.status .in(Status.PUBLISHED,Status.DRAFT)) .execute(); import static org.gujavasc.entities.QPost.post;
- 61. 61
- 62. Dúvidas?!