Not Only Reactive - Data Access with Spring Data
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SpringOne Platform 2017 Christoph Strobl, Pivotal; John Blum, Pivotal "Reactive programming is one of the Core themes supported by Spring Framework 5.0 and the other ecosystem projects. Spring Data provides non blocking, reactive support that allows Spring applications to go reactive from end to end. Still, more has happened around Spring Data. In this session we will cover efforts made towards reactive data access for those stores supporting this approach. But we will also give an update on recent additions, changes and improvements in Spring Data. Have a detailed look at the supported stores and deep dive into some of their specifics."
![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/
SpEL Enhancements for Projections
17
public interface MyProjection {
@Value("#{@bean.method(target, args[0])}")
String invokeBeanWithParameter(Integer parameter);
}
< / >
code](https://image.slidesharecdn.com/2017springonenotonlyreactivedataaccess-171219172621/85/Not-Only-Reactive-Data-Access-with-Spring-Data-17-320.jpg)
![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/
Untyped Query By Example
23
Person probe = new Person("luke");
operations.query(Person.class)
.matching(query(byExample(of(probe, ExampleMatcher.matching()))))
.all();
{
"first_name" : "luke",
"_class" : { "$in" : ["Person"] }
}](https://image.slidesharecdn.com/2017springonenotonlyreactivedataaccess-171219172621/85/Not-Only-Reactive-Data-Access-with-Spring-Data-23-320.jpg)
![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 JDBC
44
jdbc
@EnableJdbcRepositories
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
< / >
code](https://image.slidesharecdn.com/2017springonenotonlyreactivedataaccess-171219172621/85/Not-Only-Reactive-Data-Access-with-Spring-Data-44-320.jpg)
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Not Only Reactive - Data Access with Spring Data
- 1. Not Only Reactive Data Access with Spring Data Christoph Strobl John Blum 1 @stroblchristoph @john_blum
- 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/ 15 Modules. over 700 issues fixed. Let’s move… 3
- 4. Core Themes
- 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/ java.lang.Serializable 5 public interface CrudRepository<T, ID extends Serializable> … { T findOne(ID id); … }
- 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.lang.Serializable 6 public interface CrudRepository<T, ID> extends Repository<T, ID>{ T findOne(ID id); … }
- 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/ java.util.Optional 7 public interface CrudRepository<T, ID> extends Repository<T, ID>{ T findOne(ID id); … }
- 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/ java.util.Optional 8 public interface CrudRepository<T, ID> extends Repository<T, ID>{ Optional<T> findOne(ID id); … }
- 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/ Naming 9 public interface CrudRepository<T, ID> extends Repository<T, ID>{ Optional<T> findOne(ID id); Iterable<T> findAll(Iterable<ID> ids); Iterable<S> save(Iterable<S> entities); void delete(ID id); … }
- 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/ Naming 10 public interface CrudRepository<T, ID> extends Repository<T, ID>{ Optional<T> findById(ID id); Iterable<T> findAllById(Iterable<ID> ids); Iterable<S> saveAll(Iterable<S> entities); void deleteById(ID id); … }
- 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 11 interface Repo extends Repository<T, ID>, Custom { … } interface Custom { … } class RepoImpl implements Custom { … }
- 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/ Composable Interfaces 12 interface Repo extends Repository<T, ID>, Custom { … } interface Custom { … } class CustomImpl implements Custom { … }
- 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/ Composable Interfaces 13 interface Repo extends Repository<T, ID>, Custom, Mixin { … } interface Custom { … } class CustomImpl implements Custom { … }
- 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/ @Nullable, @NonNull & @NonNullApi 14 public interface Specification<T> { //… @Nullable Predicate toPredicate(Root<T> root, CriteriaQuery<?> query, …) }
- 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/ @Nullable, @NonNull & @NonNullApi 15 public interface Repo extends Repository<T, ID> { @NonNull T findByFirstname(String firstname); } < / > code
- 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/ Kotlin Extensions (specific projects only) 16 var template: MongoTemplate template.updateFirst(query, update, Domaintype::class) val users = template.findAll<DomainType>()
- 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/ SpEL Enhancements for Projections 17 public interface MyProjection { @Value("#{@bean.method(target, args[0])}") String invokeBeanWithParameter(Integer parameter); } < / > code
- 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/ …and more new return type: org.springframework.data.util.Streamable Automatic Modules names Support for Vavr … 18
- 19. Store Specifics
- 20. MongoDB
- 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/ Builder Style Template API 21 template.find(query(where("name").is("luke"), Person.class, "star-wars", Jedi.class);
- 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/ Builder Style Template API 22 template.query(Person.class) .inCollection("star-wars") .as(Jedi.class) .matching(query(where("name").is("luke")) .all(); < / > code
- 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/ Untyped Query By Example 23 Person probe = new Person("luke"); operations.query(Person.class) .matching(query(byExample(of(probe, ExampleMatcher.matching())))) .all(); { "first_name" : "luke", "_class" : { "$in" : ["Person"] } }
- 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/ Untyped Query By Example 24 Person probe = new Person("luke"); operations.query(Person.class) .matching(query(byExample(of(probe, ExampleMatcher.matching() .withIgnorePaths("_class"))))) .all(); { "first_name" : "luke" }
- 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/ Untyped Query By Example 25 Person probe = new Person("luke"); operations.query(Person.class) .matching(query(byExample(of(probe, UntypedExampleMatcher.matching())))) .all(); { "first_name" : "luke" }
- 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/ ReactiveMongoOperations 26 <T> List<T> findAll(Class<T> entityClass, String collectionName); <T> T findOne(Query query, Class<T> entityClass); …
- 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/ ReactiveMongoOperations 27 <T> Flux<T> findAll(Class<T> entityClass, String collectionName); <T> Mono<T> findOne(Query query, Class<T> entityClass); … < / > code < / > code
- 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/ Infinite Streams 28 Flux<Document> inf = template.tail(query, Document.class, "collection"); Disposable disposable = inf.doOnNext(…).subscribe(); // … disposable.dispose(); ATTENTION more in next session
- 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/ …and more MongoDB 3.6 support Aggregation Enhancements Collation support … 29
- 30. Redis
- 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/ Redis Cache 31 public CacheManager cacheManager(RedisTemplate template) { RedisCacheManager cacheManager = new RedisCacheManager(template); cacheManager.setDefaultExpiration(10L); return cacheManager; } public RedisTemplate redisTemplate(RedisConnectionFactory connectionFactory) { RedisTemplate template = new RedisTemplate(); template.setConnectionFactory(connectionFactory); template.setValueSerializer(new GenericJackson2JsonRedisSerializer()); return template; } public RedisConnectionFactory connectionFactory() …
- 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/ Redis Cache 32 public CacheManager cacheManager(RedisConnectionFactory connectionFactory) { RedisCacheConfiguration configuration = RedisCacheConfiguration.defaultCacheConfig() .entryTtl(Duration.ofSeconds(10)) .serializeValuesWith(fromSerializer(json())); return RedisCacheManager.builder(connectionFactory) .cacheDefaults(configuration) .withInitialCacheConfigurations(singletonMap("person", RedisCacheConfiguration.defaultCacheConfig())) .build(); } public RedisConnectionFactory connectionFactory() …
- 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/ Split up RedisConnection 33 append bgReWriteAof bgSave bgWriteAof bitCount bitCount bitOp bLPop bRPop bRPopLPush close closePipeline dbSize decr decrBy del discard dump echo eval evalSha evalSha geoRemove get getBit getClientList getClientName getConfig getNativeConnection getRange getSentinelConnection getSet getSubscription hashCommands hDel hExists hGet hGetAll hIncrBy hIncrBy hKeys hLen hMGet hMSet lLen lPop lPush lPushX lRange lRem lSet lTrim mGet migrate migrate move mSet mSetNX multi openPipeline persist pExpire pExpireAt pfAdd pfCount pfMerge scriptKill scriptLoad sDiff sDiffStore select serverCommands set set setBit setClientName setCommands setConfig setEx setNX setRange shutdown shutdown sInter sInterStore sIsMember slaveOf slaveOfNoOne watch zAdd zAdd zCard zCount zCount zIncrBy zInterStore zInterStore zRange zRangeByLex zRangeByLex zRangeByLex zRangeByScore zRangeByScore zRangeByScore zRangeByScore zRangeByScore zRangeByScore zRangeByScoreWithScores zRangeByScoreWithScores zRangeByScoreWithScores exec execute exists exists expire expireAt flushAll flushDb geoAdd geoAdd geoAdd geoAdd geoCommands geoDist geoDist geoHash geoPos geoRadius geoRadius geoRadiusByMember geoRadiusByMember geoRadiusByMember hScan hSet hSetNX hStrLen hVals hyperLogLogCommands incr incrBy incrBy info info isClosed isPipelined isQueueing isSubscribed keyCommands keys killClient lastSave lIndex lInsert listCommands ping pSetEx pSubscribe pTtl pTtl publish randomKey rename renameNX resetConfigStats restore rPop rPopLPush rPush rPushX sAdd save scan sCard scriptExists scriptFlush scriptingCommands sMembers sMove sort sort sPop sPop sRandMember sRandMember sRem sScan stringCommands strLen subscribe sUnion sUnionStore time touch ttl ttl type unlink unwatch zRangeByS zRangeWit zRank zRem zRemRange zRemRange zRemRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRank zScan zScore zSetComma zUnionSto
- 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/ Split up RedisConnection 34 append bgReWriteAof bgSave bgWriteAof bitCount bitCount bitOp bLPop bRPop bRPopLPush close closePipeline dbSize decr decrBy del discard dump echo eval evalSha evalSha geoRemove get getBit getClientList getClientName getConfig getNativeConnection getRange getSentinelConnection getSet getSubscription hDel hExists hGet hGetAll hIncrBy hIncrBy hKeys hLen hMGet hMSet lLen lPop lPush lPushX lRange lRem lSet lTrim mGet migrate migrate move mSet mSetNX multi openPipeline persist pExpire pExpireAt pfAdd pfCount pfMerge scriptKill scriptLoad sDiff sDiffStore select set set setBit setClientName setConfig setEx setNX setRange shutdown shutdown sInter sInterStore sIsMember slaveOf slaveOfNoOne watch zAdd zAdd zCard zCount zCount zIncrBy zInterStore zInterStore zRange zRangeByLex zRangeByLex zRangeByLex zRangeByScore zRangeByScore zRangeByScore zRangeByScore zRangeByScore zRangeByScore zRangeByScoreWithScores zRangeByScoreWithScores zRangeByScoreWithScores exec execute exists exists expire expireAt flushAll flushDb geoAdd geoAdd geoAdd geoAdd geoDist geoDist geoHash geoPos geoRadius geoRadius geoRadiusByMember geoRadiusByMember geoRadiusByMember hScan hSet hSetNX hStrLen hVals incr incrBy incrBy info info isClosed isPipelined isQueueing isSubscribed keys killClient lastSave lIndex lInsert ping pSetEx pSubscribe pTtl pTtl publish randomKey rename renameNX resetConfigStats restore rPop rPopLPush rPush rPushX sAdd save scan sCard scriptExists scriptFlush sMembers sMove sort sort sPop sPop sRandMember sRandMember sRem sScan strLen subscribe sUnion sUnionStore time touch ttl ttl type unlink unwatch zRangeByS zRangeWit zRank zRem zRemRange zRemRange zRemRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRange zRevRank zScan zScore zUnionSto geoCommands hashCommands hyperLogLogCommands keyCommands listCommands serverCommands scriptingCommands setCommands stringCommands zSetComma
- 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/ Split up RedisConnection 35 connection.stringCommands().append bitCount bitCount bitOp decr decrBy get getBit getRange getSet …
- 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/ Reactive Connection & Template API 36 Mono<Boolean> mono = redisConnection.stringCommands().set(key, value); Flux<ByteBuffer> flux = redisConnection.listCommands().lRange(key, 0, 10); ATTENTION more in next session
- 37. Apache Cassandra
- 38. Neo4j
- 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/ Load Time 39 0 2 4 6 8 4.x 5.x native Depth 1 Depth 2
- 40. Sneak Peek
- 41. 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/ Distinct Queries 41 List<String> lastnames = template.query(Person.class) .distinct("lastname") .as(String.class) .matching(query(where("firstname").like("luke"))) .all() < / > code
- 42. 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/ Write to Master read from Slave 42 LettuceTestClientConfiguration.builder() .readFrom(ReadFrom.SLAVE_PREFERRED) .build();
- 43. 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 Pub/Sub 43 ReactiveRedisMessageListenerContainer container = new ReactiveRedisMessageListenerContainer(connectionFactory); Flux<Message> messages = container.receive(ChannelTopic.of("s1p"))); // … container.destroy(); ATTENTION more in next session
- 44. 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 JDBC 44 jdbc @EnableJdbcRepositories public class App { public static void main(String[] args) { SpringApplication.run(App.class, args); } } < / > code
- 45. 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/ Gemfire Test 45 @ClientCacheApplication @EnableGemFireMockObjects class TestConfiguration { ... }
- 46. 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/ High Level Client for Elasticsearch 6 46 Mohsin Husen Artur Konczak Nikita Klimov Julien Roy Alexander Belyaev
- 47. 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/ Async & Reactive Neo 47
- 48. Learn More. Stay Connected. Tue, 3:20 pm - Reactive Data Access with Spring Data Tue, 4:20 pm - Under the Hood of Reactive Data Access Wed, 5:40 pm - Simplifying Apache Geode with Spring Data Thu, 10:30 am - JDBC, What Is It Good For? 48 #springone@s1p
- 49. Disclaimer
- 50. 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/ Safe Harbor Statement 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. 50