What's New in Spring Data?

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What’s New in Spring Data?Mark Paluch • Christoph Strobl

@mp911de • @stroblchristoph

Unless o therwise ind ica ted , these s l ides a re © 2013-2016 P ivo ta l So f tware , Inc . and l i censed under a Creat ive Commons At t r ibu t ion -NonCommerc ia l l i cense : h t tp : / /c rea t ivecommons .org / l i censes /by -nc /3 .0 / 2


Agenda

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Overview Core Themes

Store modules Q&A


Hopper Release

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Spring Data Release train BOM

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<dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-releasetrain</artifactId> <version>Hopper-SR2</version> <scope>import</scope> <type>pom</type> </dependency>


Module setup Hopper

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Commons

Neo4j Gemfire

JPA

Solr

ElasticSearch

REST

CassandraCouchbase

Redis

MongoDB

Communitymodules

Coremodules


Release train - Spring Framework baselines

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DijkstraMay 2014 Spring 3.2

EvansAugust 2015 Spring 4.0

FowlerMarch 2015 Spring 4.0

GoslingSeptember 2015 Spring 4.1

HopperApril 2016 Spring 4.2

Ingalls* 2016 Spring 4.2


Major Dependency upgrades for Hopper

• Upgraded Spring Framework baseline to 4.2 • Upgrade to Querydsl 4 • Upgrade to Elasticsearch 2.0 • Upgrade to Solr 5

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Core Themes

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Query by Example

• Value objects provided by Spring Data Commons • Supported by Spring Data JPA and Spring Data MongoDB

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Example<User> example = Example.of( " ""); ""repository.findAll(example);

new User("jon", "snow"),

ExampleMatcher.matching() .withMatcher("lastname", matcher -> matcher.ignoreCase().startsWith())


Demo

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Query by Example


Projections in Repository Query Methods

• First time seen with Evans in Spring Data REST • Projections to reduce or enhance view of resources

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interface CustomerProjection { " String getFirstname(); "}

interface CustomerSummary { " @Value( "#{target.firstname + ' ' + target.lastname}") String getFullName(); @Value("#{@mybean.someMethod(target)}") String getSomeCalculatedValue(); "}

Closed Projection Open Projection


DemoProjections


Spring Data Commons

• Support for Composed Annotations • Support JDK 8 and Guava Optional on repository query parameters • Allow aliasing of Querydsl web bindings • Converter support for JSR-310's ZoneId.

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DemoComposed Annotations


DemoWrapped Parameters


Store Specifics

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Spring Data Redis

"• Deprecated jredis and srp drivers • Redis Cluster support (Jedis & Lettuce) • Support for object mapping and repositories • Redis SSL support

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DemoRedis Cluster


• Customizable entity lookup.

self: { href: "http://localhost:8080/countries/47631a38-548f-11e6-beb8-9e71128cae77" },

Spring Data REST

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@Component class SpringDataRestCustomization extends RepositoryRestConfigurerAdapter { " @Override public void configureRepositoryRestConfiguration( RepositoryRestConfiguration config) { " config.withCustomEntityLookup(). forRepository(CountryRepository.class, Country::getName, CountryRepository::findByName); } }

countries: [{ name: "austria", _links: { self: { href: "http://localhost:8080/countries/austria" }, country: { href: "http://localhost:8080/countries/austria" } } }, { name: "germany", _links: { ...


• Customizable reference entity lookup.

Spring Data REST

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@Component class SpringDataRestCustomization extends RepositoryRestConfigurerAdapter { " @Override public void configureRepositoryRestConfiguration( RepositoryRestConfiguration config) { " config.withCustomEntityLookup(). forLookupRepository(CountryRepository.class). withIdMapping(Country::getName). withLookup(CountryRepository::findByName); } }

{ "zipCode" : "…", "country" : "Germany" }

"_links" { "country" : { "href" : "http://localhost:8080/countries/47631a38-548f-11e6-beb8-9e71128cae77" } }


Spring Data Gemfire

• Support for OQL specific features via Annotations • @Trace

• @Limit

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• Annotation based eviction strategies • @TimeToLiveExpiration

• @IdleTimeout

interface UserRepository extends GemfireRepository { @Trace @Limit(5) @Hint("UsernameIdx") List<User> findByUsernameLike(String username); }

@TimeToLiveExpiration( timeout="300", action="LOCAL_DESTROY") @IdleTimeoutExpiration( timeout="120", action="LOCAL_INVALIDATE") class DomainObject { //… }


Spring Data Couchbase• N1QL Integration.

• SQL extension for JSON. • Allows sorting and Paging. • Evaluates your SpEL expressions

and named parameters.

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• Geospatial query support via specialized Views

• Support for auditing annotations.

interface PartyRepository extends Repository<Party, String> { @Dimensional( designDocument="partyGeo", spatialViewName="byLocation") List<Party> findByLocNear(Point p, Distance d); }

interface UserRepository extends Repository<User, String> { " List<User> findByUsernameContains(String s); @Query List<User> findByAgeBetween(int min, int max); }


Spring Data Elasticsearch

• Upgrade to Elasticsearch 2 • Removed Facet feature -> Please use Aggregations instead.

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Outlook - Ingalls

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Module setup Hopper

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Commons

Neo4j Gemfire

JPA

Solr

ElasticSearch

REST

CassandraCouchbase

Redis

MongoDB

Communitymodules

Coremodules


Module setup Ingalls

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Commons

Neo4j Gemfire

JPA

Solr

ElasticSearch

REST Cassandra

Couchbase

Redis

MongoDB

Communitymodules

Coremodules


Outlook• Upgrade to Cassandra 3.0 "• Performance improvements

• General: Method handles for property access in object mapping. • MongoDB: DBRef loading improvements. • Couchbase: Async API usage for view based queries.

• Redis • Partial updates in Redis repositories. • Support for GEO commands and derived findBy…Near/Within queries. "

• MongoDB • Aggregation Framework improvements. • $min / $max support in MongoDB.

• REST: • Support for inbound projections using JSONPath / XPath (via XMLBeam). • Support for VND Error and RFC7807 (Problem details for HTTP APIs). • Support for additional hypermedia formats (Siren, Affordances).

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Oh, wait - one more thing

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..maybe you’ve heard of Reactive Programming

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Spring Data 2.0

• Upgrade JDK baseline to 8 • Upgrade Spring Framework baseline to 5.0 • Reactive support for MongoDB, Redis and Couchbase

• Store implementations using either RxJava or Project Reactor • Reactive wrapper type conversion on Repository level

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! STAY TUNED !


DemoReactive Data Access


Related Sessions• Tue, 2nd, August, 2016

• 3:20 pm – Christoph StroblSpring Data Redis Cluster & Repositories

"• Wed, 3rd, August, 2016

• 2:00 pm – Sébastien Deleuze, Stéphane MaldiniA Lite Rx API for the JVM

• Wed, 3rd, August, 2016 • 3:20 pm – John Blum, Mark Paluch

Outlook: Spring Data Cassandra 1.5

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Related Sessions• Thu, 4th, August, 2016

• 9:00 am – John Blum, Luke Shannon Spring Data and In-Memory Data Management in Action

"• Thu, 4th, August, 2016

• 11:10 am – Oliver GierkeAdvanced Spring Data REST

"• Thu, 4th, August, 2016

• 11:45 am – Viktor Gamov, Neil Stevenson Spring Data Hazelcast: Fluently Accessing Distributed Repositories

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Feedback welcome!

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Resources

• Slides – TBA • Spring Data Examples – Repository @ Github • Spring Data wiki (Release trains, planning) – Wiki • Spring projects release calendar – Google Calendar

"• Chat with us on Gitter!

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https://github.com/spring-projects/spring-data-examples

https://github.com/spring-projects/spring-data-commons/wiki

https://calendar.google.com/calendar/embed?src=pivotal.io_sq9g8olb883j075fug3runjttc%40group.calendar.google.com

https://gitter.im/spring-projects/spring-data


Learn More. Stay Connected.

Follow us @SpringData

@springcentral spring.io/blog

@pivotal pivotal.io/blog

@pivotalcf http://engineering.pivotal.io

Talk to us spring-projects/spring-data


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What's New in Spring Data?

Technology

Transcript of What's New in Spring Data?