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Release Train 2021.1 (Q) Release Notes
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M1 - Jul 16, 2021
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M2 - Aug 13, 2021
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M3 - Sept 17, 2021
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RC1 - Oct 14, 2021
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GA - Nov 12, 2021
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Upgrade to Querydsl 5.0
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Improved jMolecules’
@IdentityID annotation support -
Deprecated RxJava 2 support in preparation for removal
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Fluent Query API for Querydsl and Query-by-Example
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MongoDB
@DocumentReference -
MongoDB schema derivation for encrypted fields
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Redis 6.2 support
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Support for streaming large result sets in Spring Data JDBC
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Spring Data JDBC SQL Builder refinements around conditions,
JOINs andSELECTprojections -
MongoDB 5.0 Time Series support
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Support for cyclic mapping in Neo4j projections
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Support for Querydsl in Neo4j
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Spring Data Build - 2.6
Domain models can now use jMolecules' @Identity annotation to denote the identifier property of an aggregate root to improve developer experience when using jMolecules.
QuerydslPredicateExecutor, QueryByExampleExecutor and their reactive variants now define with findBy(…) a query method that allows fluent definition of queries. The fluent API allows customization of projections, sort properties and various terminal methods introducing consumption of results as Stream and other return types. Support for the fluent API is available in all store modules that already support Querydsl or Query by Example.
Repositories that support deleteInBatch and deleteAllInBatch methods now publish @DomainEvents when deleting multiple aggregates using batch functionality. From Spring Data’s core modules JPA is now supporting this functionality.
Repositories can now make use of Smallrye Mutiny types such as Uni and Multi in repository query methods. These types serve also as markers to detect whether a repository is a reactive one.
RxJava 2 support is now deprecated for removal with Spring Data 3.0. RxJava 2 is end-of-life as of February 28, 2021 and we recommend using RxJava 3 instead.
MongoDB 5.0 introduced Time Series collections that are optimized to efficiently store documents over time such as measurements or events. Those collections need to be created as such before inserting any data. Collections can be created by either running the createCollection command, defining time series collection options or extracting options from a @TimeSeries annotation used on domain classes.
@TimeSeries(collection = "weather", timeField = "timestamp")
public class Measurement {
String id;
Instant timestamp;
// ...
}
See the Spring Data MongoDB documentation for further reference.
Wildcard indexes can be created programatically or declaratively. The annotation-driven declaration style covers various use-cases such as full-document indexes or indexes for maps. Consult the documentation for wildcard indexes to learn about the details.
Properties whose values is null were skipped when writing a Document from an entity. @Field(write=…) can now be used to control whether to skip (default) such properties or whether to force a null property to be written to the Document.
MongoDB’s Client-Side Field-Level Encryption requires a schema map to let the driver transparently encrypt and decrypt fields of a document.To simplify the configuration. properties in the domain model can be annotated with @Encrypted. MongoJsonSchemaCreator can create the schema map for Mongo’s AutoEncryptionSettings based on the domain model. Schema generation considers the algorithm and key identifiers.
The documentation on Encrypted Fields explains the configuration in detail.
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#1767 - DynamicMapping annotation should be applicable to any object field.
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#1454 - Allow disabling TypeHints.
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#1787 - Search with MoreLikeThisQuery should use Pageable.
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#1792 - Upgrade to Elasticsearch 7.12.1.
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#1800 - Improve handling of immutable classes.
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#1255 - Add pipeline aggregations to NativeSearchQuery.
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#1816 - Allow runtime_fields to be defined in the index mapping.
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#1831 - Upgrade to Elasticsearch 7.13.0.
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#1839 - Upgrade to Elasticsearch 7.13.1.
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#1862 - Add native support for range field types by using a range object.
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#1864 - Upgrade to Elasticsearch 7.13.3.
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#1938 - Add @QueryAnnotation meta annotation to @Query.
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#1941 - Upgrade to Elasticsearch 7.15.0.
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#1909 - Add repository search for nullable or empty properties..
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#1950 - AbstractElasticsearchTemplate.searchForStream use Query scrolltime.
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#1945 - Enable custom converters for single fields .
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#1911 - Supply a custom Sort.Order providing Elasticsearch specific parameters.
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#769 - Support for field exclusion from source.
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Redis 6.2 Command support
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Redis Cache writer clean performance optimization #1721
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#920 - The Postgres dialect now consideres
PGobjecta simple type.