It was decided that the massive work for 5.0 including metamodel and all
the other changes was just taking too long, and that we'd split that work
up into a number of intermediate versions. I wanted to highlight the
proposed breakdown and solidify the roadmaps. The preliminary breakdown is
as follows:
- 5.0
- Java 6 or 7 (?)
- EE 7 (JPA 2.1)
- Wildfly 9
- Timeline : Spring 2015
- Required development
- Transition to new bootstrapping APIs
- MetadataSources, contributors, builders, etc for building
SessionFactory
- Keep Configuration as a migration aid, but align its
processing and assumptions to follow new APIs
- New naming strategy approach (implicit and physical split)
- Pick "important" features from metamodel work based on new
bootstrapping API
- automatic quoting of identifiers that are keywords
- ???
- Performance improvements
- Cachng SPI changes based on feedback from Ehcahce and Infinispan
- EntityKey proposal
- Explore unifying entry keys for actual cache provider, cache
SPI (CacheKey) and persistence-context (EntityKey)
- Infinispan improvements, especially in local mode. Will
require integrating a new Infinispan version and possible
changes to
hibernate-infinispan
- ???
- OGM integration
- "after persisters built" hook
- others?
- Java 8 type support
- Date/Time
- Optional
- Java 9 type support
- Money/Currency
- Optional development (as time, resources allow)
- Discriminator based multitenancy
- JAXB instead of dom4j.
- extended orm.xml xsd, deprecating hbm.xml format
- Jandex usage
- JdbcSession
- Hibernate Spatial integration (depends on level of dependence on
metamodel)
- 5.1
- Java 6 or 7 (?)
- EE 7 (JPA 2.1)
- Widfly 9, or 10
- Timeline : TBD (Fall 2016?)
- Required development
- slips from 5.0
- new HQL parser
- Antlr 3 or 4?
- unified SQL generation? or limit to HQL parsing?
- Optional development (as time, resources allow)
- extend JPA criteria API with support for constructs from
Hibernate's legacy criteria API
- extend JPA criteria API with fluent support
- Possibly - Override EAGER fetching with LAZY (fetch profiles, HQL,
etc)
- 5.2
- (if needed)
- Java 6 or 7 (?)
- EE 7 (JPA 2.1)
- Widfly 9, or 10
- Required development
- splits from 5.1
- 6.0
- SE and EE support levels TBD, but at least SE 8
- Required development
- metamodel
One additional consideration... I have been told (have not verified the
details yet myself) that Hibernate ORM will currently not run in Java 8 at
least in part because dom4j will not work in Java 8 (maybe just the version
we use? again, have not verified details yet). If running 5.x versions of
Hibernate in Java 8 is important to anyone, we might need to increase the
priority of moving to JAXB over dom4j.
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