Sourced from hibernate-core's releases.

Hibernate ORM 5.2.0

5.2.0 includes many improvements and bug-fixes. For a complete list of changes, see https://hibernate.atlassian.net/projects/HHH/versions/23150/tab/release-report-done.

Many of the changes in 5.2.0 have important ramifications in terms of both usage and extension. Be sure to read the 5.2 Migration Guide for details.

Below is a discussion of the major changes.

Java 8 baseline

5.2 moves to Java 8 as its baseline. This means:

• The hibernate-java8 module has been removed, and that functionality has been moved into hibernate-core.
• Native support for Java 8 date/time types as Query parameters.
• Support for streaming (java.util.stream.Stream) query results.
• Support for java.util.Optional as return from methods that may return null.
• Leveraging Java 8 "default methods" when introducing new methods to extension points.

Consolidating JPA support into hibernate-core.

That effectively means that the hibernate-entitymanager module no longer exists. Its functionality being consumed into hibernate-core.

JCache support

Support for using any JCache-compliant cache impl as a second-level caching provider.

Session-level batch size support

Support has been added for specifying a batch size for write operations per Session.

Sourced from hibernate-core's changelog.

Changes in 5.4.27.Final (December 22, 2020)

https://hibernate.atlassian.net/projects/HHH/versions/31910

** Bug * [HHH-14380] - Join ordering logic wrongly pushes cross joins from subqueries to parent * [HHH-13954] - PostgreSQL - partitioned table: Schema-validation: missing table (when table exists)

** New Feature * [HHH-14385] - Allow specifying a target JVM version for compatibility of generated proxies via ByteBuddy

Changes in 5.4.26.Final (December 14, 2020)

https://hibernate.atlassian.net/projects/HHH/versions/31904

** Bug * [HHH-14363] - MutableTypeEnhancementTestCase failing when run on Oracle DB * [HHH-14360] - NullPointerException on AbstractEntityPersister.resolveDirtyAttributeIndexes * [HHH-14355] - NPE in Envers AdditionalJaxbMappingProducerImpl when XML mapping is disabled * [HHH-13945] - Envers cannot process deletion of child entity for ManyToOne relation

** New Feature * [HHH-14337] - Micrometer Statistics implementation

Changes in 5.4.25.Final (December 01, 2020)

https://hibernate.atlassian.net/projects/HHH/versions/31903

** Bug * [HHH-14350] - MariaDB103Dialect requires the lock wait timeout to be expressed in seconds * [HHH-14348] - Lazy collection is fetched during dirty checking with bytecode enhancement * [HHH-14346] - org.hibernate.metamodel.model.domain.internal.AbstractManagedType#getPluralAttributes NPE * [HHH-14343] - Nested ID classes fail with AnnotationException: Column name game_id of x.x.PlayerStat not found in JoinColumns.referencedColumnName * [HHH-14335] - Cache resolution of SimpleValue#getType * [HHH-14251] - Invalid SQL for @Embedded UPDATE

** Improvement * [HHH-14334] - Make dom4j and jaxb-api optional if hibernate.xml_mapping_enabled=false

Changes in 5.4.24.Final (November 17, 2020)

https://hibernate.atlassian.net/projects/HHH/versions/31892

• d558f65 5.4.27.Final
• 21ec1a1 HHH-14385 Allow specifying a target JVM version for compatibility of generate...
• 89f0000 HHH-14380 - Only reorder destination from elements from the same from clause
• c1baa23 HHH-14380 Test case from Blazebit/blaze-persistence#1...
• 5a57bc9 HHH-13913 An SQL Dialect for PostgreSQL 10 and later. Adds support for Partit...
• d901ccf 5.4.27-SNAPSHOT
• 05792d9 5.4.26.Final
• e21f4d3 HHH-14356 Have Hibernate Envers produce a user friendly bootstrap exception i...
• 04c97c2 HHH-14356 Avoid NPE when booting with xml_mapping_enabled=false
• 0009fec HHH-14337 Micrometer support
• Additional commits viewable in compare view

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