What's new in SpringData Moore

A condensed view on some of the highlights of the SpringData release train Moore.

Transcript

1. What’s new in Spring Data
   October 7–10, 2019
   Austin Convention Center
   Moore
   Gordon Earle
   

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2. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Image Source: NASA.gov
   16 Modules
   375 Days
   700+ Issues
   Kotlin
   Performance
   Reactive
   New Features
   Coroutines & Flow
   Declarative Reactive Transactions
   60% faster finder methods*

   * for eg. JPA single attribute finder like 'findByTitle'
   

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3. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
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   Reactive
   Declarative Transactions
   

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4. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Transactions
   public Mono doSomething(Long id) {
   return template.inTransaction().execute(action -> {
   return findById(id)
   .flatMap(it -> start(action, it))
   .flatMap(it -> verify(it))
   .flatMap(it -> finish(action, it));
   }).next();
   }
   Flux
   Mono
   

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5. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Declarative Transactions
   @EnableTransactionManagement
   class Config extends AbstractReactiveMongoConfiguration {
   @Bean
   ReactiveTransactionManager mgr(ReactiveMongoDatabaseFactory f) {
   return new ReactiveMongoTransactionManager(dbFactory);
   }
   // ...
   }
   New in Moore
   

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6. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Declarative Transactions
   @Transactional
   public Mono doSomething(Long id) {
   return findById(id)
   .flatMap(it -> start(template, it))
   .flatMap(it -> verify(it))
   .flatMap(it -> finish(template, it));
   }
   template.inTransaction().execute(…
   .next()
   start(action,…
   finish(action,…
   New in Moore
   

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7. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
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   Reactive
   Elasticsearch
   

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8. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Why not…?
   public Mono search(SearchRequest request) {
   return Mono.create(sink ->
   client.searchAsync(request, options, new ActionListener<>() {
   @Override
   public void onResponse(SearchResponse searchResponse) {
   sink.success(searchResponse);
   }
   @Override
   public void onFailure(Exception e) {
   sink.error(e);
   

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9. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Elasticsearch Client
   class Config extends AbstractReactiveElasticsearchConfiguration {
   @Bean
   @Override
   public ReactiveElasticsearchClient reactiveClient() {
   return ReactiveRestClients.create(localhost());
   }
   }
   New in Moore
   based on WebClient
   

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10. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Elasticsearch Template
    @Autowired
    ReactiveElasticsearchTemplate template;
    //...
    Criteria criteria = new Criteria("topics").contains("spring")
    .and("date").greaterThanEqual(today())
    CriteriaQuery query = new CriteriaQuery(criteria);
    Flux result = template.find(query, Conference.class);
    New in Moore
    

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11. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Elasticsearch Repository
    interface ConferenceRepo extends ReactiveCrudRepository<…> {
    Flux findAllByKeywordsContainsAndDateAfter(…);
    }
    @Autowired
    ConferenceRepo repo;
    //…
    Flux result =
    repo.findAllByKeywordsContainsAndDateAfter("spring", today());
    New in Moore
    

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12. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    Reactive
    Querydsl
    

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13. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Querydsl
    interface Repository extends …, QuerydslPredicateExecutor
    QCustomer.customer.lastname.eq("Matthews")
    

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14. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Querydsl
    interface Repository extends …, QuerydslPredicateExecutor
    @Autowired
    Repository repo;
    //…
    Predicate predicate = QCustomer.customer.lastname.eq("Matthews");
    List result = repo.findAll(predicate);
    

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15. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Querydsl
    interface Repository extends …, ReactiveQuerydslPredicateExecutor<…>
    @Autowired
    Repository repo;
    //…
    Predicate predicate = QCustomer.customer.lastname.eq("Matthews");
    Flux result = repo.findAll(predicate);
    New in Moore
    

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16. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Type-Safe Queries
    Kotlin
    

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17. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Kotlin
    val people = operations.query()
    .matching(query(where("lastname").isEqualTo("Matthews")))
    .all()
    List people = operations.query(Person.class)
    reified type parameter
    

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18. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Kotlin type-safe query DSL
    val people = operations.query()
    .matching(query(Person::lastname isEqualTo "Matthews"))
    .all()
    where("lastname")
    .isEqualTo("Matthews")
    New in Moore
    

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19. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Coroutines & Flow
    Kotlin
    

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20. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Kotlin
    operations.query()
    .matching(query(where("lastname").isEqualTo("Matthews")))
    .doOnNext { … }
    .subscribe()
    New in Moore
    

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21. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Coroutines
    val result = runBlocking {
    operations.query()
    .matching(query(where("lastname").isEqualTo("Matthews")))
    .awaitSingle()
    }
    New in Moore
    

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22. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Flow
    val result = runBlocking {
    operations.query()
    .matching(query(where("lastname").isEqualTo("Matthews")))
    .asFlow().toList()
    }
    New in Moore
    

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23. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    Performance
    

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24. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    JMH
    Java Microbenchmark Harness
    baseline
    native code path
    Derived Query
    Annotated Query
    Transactional Query
    Spring Data
    

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25. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    JMH
    @Benchmark
    public void findByTitle(Blackhole sink) {
    Query q = em.createQuery("select b from Book b where b.title = ?1");
    q.setParameter(1, "title0");
    sink.consume(query.getSingleResult());
    }
    @Benchmark
    public void repositoryFindByTitle(Blackhole sink) {
    sink.consume(repository.findDerivedByTitle("title0"));
    }
    native code path
    Spring Data
    

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26. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 26
    RC1 RC2
    findAll 52.213 61.244
    findByTitle 74.192 123.040
    repositoryByTitle 70.344 120.333
    repositoryByTitleDeclared 65.236 111.760
    Ops/sec*
    *spring-data-jpa

    in memory H2 SQL

    Mac Book Pro 3.2 GHz
    

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27. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    New Features
    Entity Callback API
    

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28. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Modifying Entities via Events
    @Component
    class MongoListener extends AbstractMongoEventListener {
    @Override
    public void onBeforeSave(BeforeSaveEvent event) {
    event.getDocument().put(…)
    }
    }
    already converted (store specific)

    Person representation
    

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29. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Modifying Entities via Callbacks
    @Bean
    BeforeSaveCallback beforeSave() {
    return (entity, document) -> {
    document.put(…);
    return entity;
    }
    }
    already converted (store specific)

    Person representation
    New in Moore
    

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30. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Modifying Entities via Callbacks
    @Bean
    BeforeConvertCallback beforeConvert() {
    return (entity, collection) -> {
    return entity.withId(…);
    }
    }
    new Person object with and id set
    @Bean
    BeforeSaveCallback beforeSave() {
    return (entity, document) -> {…}
    } already converted (store specific)

    Person representation with changes applied
    New in Moore
    

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31. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Modifying Entities via Callbacks
    @Bean
    ReactiveBeforeConvertCallback beforeConvert() {
    return (entity, collection) -> {
    return Mono.just(entity.withId(…));
    }
    }
    New in Moore
    

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32. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    New Features
    Declarative Aggregations
    

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33. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Aggregation Framework API
    @Autowired
    MongoOperations ops;
    TypedAggregation aggregation = newAggregation(Order.class, 

    group(Fields.from(Fields.field("_id", "cust_id")))
    .sum("amount").as("total"));
    AggregationResults result =
    ops.aggregate(aggregation, TotalByCustomer.class);
    

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34. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    

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35. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    MongoDB Aggregations
    {$group:{_id:'$cust_id',total:{$sum:'$amount'}}}
    newAggregation(Order.class, group(

    Fields.from(Fields.field("_id", "cust_id")))
    .sum("amount").as("total")
    );
    

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36. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    interface OrderRepository extends CrudRepository {
    @Aggregation(" ")
    List totalByCustomer(Sort sort);
    @Aggregation(pipeline={
    "{$match:{customerId:?0}}",
    "{$count:total}"})
    Long totalOrdersForCustomer(String customerId);
    }
    Declarative Aggregations
    {$group:{_id:'$cust_id',total:{$sum:'$amount'}}}
    { "total" : 101 }
    New in Moore
    

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37. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    New Features
    Multiple out parameters
    JPA
    

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38. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Multiple OUT Parameters
    @NamedStoredProcedureQuery(name = "User.s1p", procedureName = "s1p",
    parameters = {
    @StoredProcedureParameter(mode = IN, name = "in_1", type = …),
    @StoredProcedureParameter(mode = OUT, name = "out_1", type = …),
    @StoredProcedureParameter(mode = OUT, name = "out_2", type = …)})
    @Table(name = "SD_User")
    class User { ... }
    interface UserRepository extends JpaRepository<…> {
    @Procedure(name = "User.s1p")
    Map callS1P(@Param("in_1") Integer arg);
    @Procedure
    Map s1p(@Param("in_1") Integer arg);
    New in Moore
    

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39. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    New Features
    Redis Streams
    

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40. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Redis Streams API
    @Autowired
    RedisTemplate template;
    StringRecord record = StreamRecords.string(…)
    .withStreamKey("my-stream");
    template.streamOps().add(record);
    ID
    1234-0 S-12 18°C
    1234-1 S-13 9°C
    1235-0 S-13 18.2°C
    template.streamOps().read(count(2), from(…));
    XRANGE
    XADD
    New in Moore
    

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41. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Redis Streams - Continuous Read
    @Autowired
    RedisConnectionFactory factory;
    StreamListener listener =
    (msg) -> {
    // …
    };
    StreamMessageListenerContainer container =
    StreamMessageListenerContainer.create(factory));
    container.receive(StreamOffset.fromStart("my-stream"), listener);
    ID
    1234-0 S-12 18°C
    1234-1 S-13 9°C
    1235-0 S-13 18.2°C
    msg.getId();
    msg.getStream();
    msg.getValue();
    New in Moore
    

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42. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Redis Streams
    StreamReceiver rcvr;
    rcvr.receive(StreamOffset.fromStart("my-stream"))
    .doOnNext(msg -> {
    // …
    })
    .subscribe();
    ID
    1234-0 S-12 18°C
    1234-1 S-13 9°C
    1235-0 S-13 18.2°C
    New in Moore
    

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43. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
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    New Features
    …and more
    

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44. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 44
    …and more
    JDBC
    uses Spring HATEOAS 1.0
    Read Only Properties
    insert/update methods
    SQL generation
    Embeddable load options
    Improved SSL support
    Dynamic port configuration
    Scalable, Cloud-Native 

    Data Applications by Example
    Domain-Driven Design

    with Relational Databases 

    Using Spring Data JDBC
    Spring HATEOAS:

    Hypermedia APIs with Spring
    Wed, 2:00 pm
    Thu, 10:30 am
    Wed, 4:20 pm
    

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45. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 45
    …and more
    ApacheTM Cassandra
    Id conversion
    Reactive GridFS
    JSON Schema generator
    Collation via annotation
    Fluent ChangeStream API
    Neo4j Spatial Types
    Exists projections
    Repository Range Queries
    Optimistic Locking
    Auditing support
    Derived delete Queries
    Code Wars:
    How the Database 

    Affects Your Application
    Watch the replay
    

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46. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 46
    …and more
    Non blocking connect
    Cluster Caching
    High Level Rest Client
    Alternative Mapper
    Event-Driven Java Applications

    with Redis 5.0 Streams
    Tue, 5:40 pm
    

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47. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Image Source: NASA.gov
    …before you go
    spring-projects/

    spring-data-examples
    

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48. Unless otherwise indicated, these slides are © 2013-2019 Pivotal Software, Inc. and licensed under a Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    Safe Harbor Statement
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    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
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    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.
    

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