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Release Train 2021.1 (Q) Release Notes
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Upgrade to Querydsl 5.0
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Improved jMolecules’
@Identity
ID 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
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MongoDB schema derivation for encrypted fields
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MongoDB 5.0 Time Series support
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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,
JOIN
s andSELECT
projections -
Support for cyclic mapping in Neo4j projections
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Support for Querydsl in Neo4j
Details
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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.
Tickets
M3
RC1
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.
Tickets
M1
M2
M3
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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
PGobject
a simple type.