Sneak Peek on Spring Data Kay

Overview of current state and outlook on Spring Data release train Kay presented at Jax conference.

Transcript

1. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Christoph Strobl

   Pivotal Software Inc.

   @stroblchristoph
   Sneak Peek
   on Spring Data Kay
   

   View Slide

2. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   The next 60 Minutes
   2
   Core Themes
   Store Specifics
   Some Code
   

   View Slide

3. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Where are we today?
   M1
   Nov. 2016
   M2
   Apr. 2017
   M3
   May 2017
   M4
   Jun. 2017
   RC1
   Jun. 2017
   GA
   Jul. 2017
   2
   

   View Slide

4. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   One word of caution
   4
   The following is intended to outline the general direction of Pivotal's offerings. It is intended for
   information purposes only and may not be incorporated into any contract. Any information regarding pre-
   release of Pivotal offerings, future updates or other planned modifications is subject to ongoing evaluation
   by Pivotal and is subject to change. This information is provided without warranty or any kind, express or
   implied, and is not a commitment to deliver any material, code, or functionality, and should not be relied
   upon in making purchasing decisions regarding Pivotal's offerings. These purchasing decisions should
   only be based on features currently available. The development, release, and timing of any features or
   functionality described for Pivotal's offerings in this presentation remain at the sole discretion of Pivotal.
   Pivotal has no obligation to update forward looking information in this presentation.
   We’re still working on it!

   Stuff I show you today might change tomorrow.
   

   View Slide

5. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Core Themes
   5
   Java 8 Baseline
   Core Concept Revisit
   Reactive Data Access
   

   View Slide

6. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Java 8 Baseline
   6
   Use of language level features.
   Get rid of the bloody hacks.
   Revisit some of the concepts.
   

   View Slide

7. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   No more Serializable
   7
   public interface CrudRepository extends Repository {

   Ingalls
   public interface CrudRepository extends Repository {

   Kay
   

   View Slide

8. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   No more null
   8
   public interface CrudRepository extends Repository {

   

   /**

   * Retrieves an entity by its id.

   * 

   * @param id must not be {@literal null}.

   * @return the entity with the given id or {@literal null} if none found.

   * @throws IllegalArgumentException if {@code id} is {@literal null}.

   */

   T findOne(ID id);
   Ingalls
   public interface CrudRepository extends Repository {

   

   /**

   * Retrieves an entity by its id.

   * 

   * @param id must not be {@literal null}.

   * @return the entity with the given id or {@literal Optional#empty()} if none found.

   * @throws IllegalArgumentException if {@code id} is {@literal null}.

   */

   Optional findById(ID id);
   Kay
   

   View Slide

9. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
   
   Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Consistent naming
   9
   public interface CrudRepository extends Repository {

   

   T findOne(ID id);
   !
   S save(S entity);
   !
   Iterable save(Iterable entities);
   !
   Ingalls
   public interface CrudRepository extends Repository {

   

   findOne(…) -> findById(…)
   !
   save(Iterable) -> saveAll(Iterable)
   !
   findAll(Iterable) -> findAllById(…)
   !
   delete(ID) -> deleteById(ID)
   Kay
   

   View Slide

10. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Composable interfaces
    10
    interface FooRepository extends CRUDRepository {

    

    Ingalls
    interface FooRepository extends Insertable, Readable {

    

    Kay
    M4
    

    View Slide

11. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Composable interfaces II - Custom implementations
    11
    interface FooRepo extends CRUDRepository, CustomRepo {

    !
    interface CustomRepo { … }

    !
    class FooRepositoryImpl implements CustomRepo { … }
    Ingalls
    interface FooRepo extends Insertable, Readable, CustomRepo { … }

    !
    interface CustomRepo { … }

    !
    class CustomRepoImpl implements CustomRepo { … }
    Kay
    M4
    

    View Slide

12. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Builder style Template APIs
    12
    interface MongoOperations {

    !
    List find(Query query, Class entityClass);
    

    List find(Query query, Class entityClass, String collection);
    !
    List find(Query query, Class source, String collection, Class target);

    !
    !
    template.find(query(where("name").is("luke")), Person.class, "star-wars", Jedi.class);
    Ingalls
    interface FindExecutionBuilder, MappingToBuilder, InCollectionBuilder,…
    !
    !
    template.query(Person.class)
    .inCollection("star-wars")
    .returning(Jedi.class)
    .findBy(query(where("name").is("luke"));
    M4
    Kay
    

    View Slide

13. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Store Specifics
    13
    

    View Slide

14. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Store Specifics
    14
    Full switch to MongoDB Java Driver 3.x

    Reactive MongoTemplate & MongoRepository

    Enhanced Aggregation support

    Collation Support
    Upgrade to Cassandra 3.2

    Revised Template API

    Reactive CassandraTemplate & CassandraRepository

    Merge Spring CQL into Spring Data for Apache Cassandra
    SRP & JRedis support discontinued

    Upgrade to Lettuce 5

    Reactive RedisConnection & RedisTemplate
    

    View Slide

15. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Store Specifics
    15
    Off-Heap, Redis Adapter and Security Annotation configuration

    Lucence index support
    Upgarde to Apache Solr 6

    Enhanced collection API
    CORS configuration mechanisms.

    Improved If-None-Match and If-Modified-Since header.

    Support for more media types.
    

    View Slide

16. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactive Data Access
    16
    Spring Framework

    5
    Project Reactor

    3
    Spring Data

    Kay
    

    View Slide

17. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Synchronous Data Access
    17
    {…}
    Thread: MAIN
    

    View Slide

18. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Synchronous Data Access II
    18
    {…}
    Thread: MAIN
    Batching
    

    View Slide

19. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Asynchronous Data Access
    19
    {…}
    Dispatcher
    Thread: MAIN
    Thread: Worker A
    Thread: Worker B
    Thread: Worker C
    

    View Slide

20. {…}
    {…}
    {…}
    Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Asynchronous Data Access II
    20
    {…}
    Dispatcher
    Thread: MAIN
    Thread: Worker A
    Thread: Worker B
    Thread: Worker C
    Scaling
    

    View Slide

21. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactive Data Access
    21
    {…}
    Subscriber Publisher
    Stream
    

    View Slide

22. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactive Data Access
    22
    {…}
    Stream
    Thread: MAIN
    Subscriber Publisher
    

    View Slide

23. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactive Data Access
    23
    {…}
    Thread: Worker A
    Thread: Worker A
    Stream
    Subscriber Publisher
    

    View Slide

24. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactive Data Access
    24
    {…}
    Subscriber Publisher
    Stream
    Thread: Worker A
    Thread: Worker B
    

    View Slide

25. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    25
    Iterator.next()
    Future.get()
    Subscriber.onNext(t)
    

    View Slide

26. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactive Repository
    26
    Mono insert(S entity);
    Mono insert(Mono entity);
    Flux insertAll(Iterable entities);
    Flux insertAll(Publisher entities);
    Mono existsById(Mono id);
    Flux findAll();
    Mono count();
    Mono deleteById(ID id);
    !!...
    

    View Slide

27. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Reactor & Reactive Streams
    27
    Publisher (0…n)
    Flux (0…n) Mono (0…1)
    Reactive Streams
    

    View Slide

28. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive
    28
    interface Repo extends ReactiveCrudRepository {
    !
    !
    !
    !
    !
    }
    Flux findAllByLastname(String lastname);
    Flux findAllByLastname(Mono lastname);
    Flux customQuery(String lastname);
    @Query("{lastname : ?0}");
    Flux findAllByLastname(String ln, Pageable page);
    

    View Slide

29. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    It’s Demo Time
    https://github.com/christophstrobl/spring-data-reactive-demo/tree/jax2017
    

    View Slide

30. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - Repository
    30
    interface PersonRepository extends ReactiveCrudRepository {
    }
    Flux.interval(Duration.ofSeconds(1))

    .zipWith(starks)

    .map(Tuple2!::getT2)

    .flatMap(repository!::save)

    .subscribe();
    String[] names = { "Eddard", "Catelyn", "Jon", "Rob", "Sansa", "Aria", "Bran", "Rickon" };

    Flux starks = Flux

    .fromStream(Stream.generate(() !-> 

    names[ramdom.nextInt(names.length-1)])

    .map(Person!::new));
    

    View Slide

31. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - Repository
    31
    interface PersonRepository extends ReactiveCrudRepository {
    }
    Flux.interval(Duration.ofSeconds(1))

    .zipWith(starks)

    .map(Tuple2!::getT2)

    .flatMap(repository!::save)

    .subscribe();
    String[] names = { "Eddard", "Catelyn", "Jon", "Rob", "Sansa", "Aria", "Bran", "Rickon" };

    Flux starks = Flux

    .fromStream(Stream.generate(() !-> 

    names[ramdom.nextInt(names.length-1)])

    .map(Person!::new));
    > cstrobl $ ./bin/mongo --port 52291
    !
    > use test
    switched to db test
    !
    { "_id" : ObjectId("591009c5ed68a820fb9956a5"), "name" : "Sansa",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009c6ed68a820fb9956a6"), "name" : "Rob",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009c7ed68a820fb9956a7"), "name" : "Sansa",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009c8ed68a820fb9956a8"), "name" : "Rob",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009c9ed68a820fb9956a9"), "name" : "Jon",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009caed68a820fb9956aa"), "name" : "Aria",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009cbed68a820fb9956ab"), "name" : "Rob",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009cced68a820fb9956ac"), "name" : "Jon",
    "_class" : "com.example.DemoApplication$Person" }
    { "_id" : ObjectId("591009cded68a820fb9956ad"), "name" : "Sansa",
    "_class" : "com.example.DemoApplication$Person" }
    > db.person.find();
    

    View Slide

32. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - WebFlux
    32
    interface PersonRepository extends ReactiveCrudRepository {
    Flux findAllByName(String name);
    }
    @RestController

    static class PersonController {

    

    PersonRepository repository;

    

    

    

    

    

    

    }
    @GetMapping("/")

    Flux fluxPersons(String name) {

    return repository.findAllByName(name);

    }

    

    View Slide

33. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - WebFlux
    33
    interface PersonRepository extends ReactiveCrudRepository {
    Flux findAllByName(String name);
    }
    @RestController

    static class PersonController {

    

    PersonRepository repository;

    

    

    

    

    

    

    }
    @GetMapping("/")

    Flux fluxPersons(String name) {

    return repository.findAllByName(name);

    }

    > cstrobl $ curl localhost:8080/?name=Eddard | jq
    !
    [
    {
    "name": "Eddard",
    "id": "591014f2756bac231a23f3a0"
    },
    {
    "name": "Eddard",
    "id": "591014f7756bac231a23f3a5"
    }
    ]
    !
    >
    

    View Slide

34. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - RxJava types
    34
    interface PersonRepository extends ReactiveCrudRepository {
    Observable findByName(String name);
    }
    @RestController

    static class PersonController {

    

    PersonRepository repository;

    

    @GetMapping("/rx")

    Observable rxPersons(String name) {

    return repository.findByName(name);

    }

    }
    

    View Slide

35. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - RxJava types
    35
    interface PersonRepository extends ReactiveCrudRepository {
    Observable findByName(String name);
    }
    @RestController

    static class PersonController {

    

    PersonRepository repository;

    

    @GetMapping("/rx")

    Observable rxPersons(String name) {

    return repository.findByName(name);

    }

    }
    > cstrobl $ curl localhost:8080/rx?name=Rob | jq
    !
    [
    {
    "name": "Rob",
    "id": "590f6e99756bac18a8d62bfe"
    },
    {
    "name": "Rob",
    "id": "590f6e9d756bac18a8d62c02"
    }
    {
    "name": "Rob",
    "id": "590f6e9e756bac18a8d62c03"
    }
    ]
    !
    >
    

    View Slide

36. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - Event Stream
    36
    interface PersonRepository extends ReactiveCrudRepository {
    @Tailable Flux findBy();
    }
    @RestController

    static class PersonController {

    

    PersonRepository repository;

    

    @GetMapping(value = "/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
    Flux streamPersons() {

    return repository.findBy();

    }

    }
    

    View Slide

37. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Spring Data Reactive - Event Stream
    37
    interface PersonRepository extends ReactiveCrudRepository {
    @Tailable Flux findBy();
    }
    @RestController

    static class PersonController {

    

    PersonRepository repository;

    

    @GetMapping(value = "/stream", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
    Flux streamPersons() {

    return repository.findBy();

    }

    }
    > cstrobl $ curl localhost:8080/stream
    !
    data:{"name":"Sansa","id":"5910192e756bac26079dd623"}
    !
    data:{"name":"Jon","id":"5910192f756bac26079dd624"}
    !
    data:{"name":"Catelyn","id":"59101930756bac26079dd625"}
    !
    data:{"name":"Eddard","id":"59101931756bac26079dd626"}
    !
    data:{"name":"Jon","id":"59101932756bac26079dd627"}
    !
    data:{"name":"Eddard","id":"59101933756bac26079dd628"}
    

    View Slide

38. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    38
    We need you!
    …give it a try!

    …tell us what you think!

    …contribute new ideas!

    …report issues!
    Spring 5 - RC1
    Spring Boot 2 - M1
    Spring Data Kay - M3
    

    View Slide

39. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    39
    More
    15:00 - 16:00 Next Level Spring Boot Tooling

    Martin Lippert - Gutenberg Saal 2
    !
    15:00 - 19:00 Microservices mit Spring Cloud und Spring Boot

    Eberhard Wolff - Zagreb
    !
    16:45 - 17:45 Spring Cloud Data Flow

    Nicolas Byl - Gutenberg Saal 2
    !
    18:15 - 19:15 Sicher in die Cloud mit Angular 2 und Spring Boot

    Andreas Falk - Gutenberg Saal 2
    

    View Slide

40. Unless otherwise indicated, these slides are © 2013-2017 Pivotal Software, Inc. and licensed under a
    
    Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    40
    Learn More. Stay Connected.
    Twitter: twitter.com/springcentral
    YouTube: spring.io/video
    LinkedIn: spring.io/linkedin
    Google Plus: spring.io/gplus
    

    View Slide