Hibernate 3.0 released!

王朝java/jsp·作者佚名  2006-01-09
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Hibernate 3.0 is the world's most sophisticated ORXM (Object/Relational/XML

Mapping) solution. Hibernate3 makes it easier than ever before for Java

applications to interact with persistent data, allowing a single definition of

the transformation between various in-memory representations of the entity

data and the relational schema, even in the case of very complex legacy

schemas and schemas for historical data or data with visibility rules.

Hibernate3 also provides the most comprehensive object/relational query

functionality, with three full-featured query facilities: Hibernate Query

Language, the newly enhanced Hibernate Criteria Query API, and enhanced

support for queries expressed in the native SQL dialect of the database.

Compared to Hibernate 2.1 - the most popular object/relational mapping

solution in any language - Hibernate 3.0 offers:

* Much more flexible O/R mapping: support for exotic association and

inheritance mappings, and greater flexibility when working with legacy

data.

* Hibernate3 filters: a unique feature for working with temporal

(historical), regional or permissioned data.

* Unprecendented flexibility for mixing handwritten and generated SQL

within a single application or even a single entity: full support for

"derived" entities and attributes defined in the mapping document, full

support for overriding any generated SQL statement with handwritten SQL,

support for stored procedures.

* Object/Relational/XML mapping: query XML directly from the database for

reporting, replicate data between databases via intermediate XML,

externalize entity data as XML when interacting with remote systems.

* Enhanced ease of use: better defaulting, an unchecked exceptions model,

simplified natural (and composite) key support, simplified CMT

integration.

* Enhanced Criteria query API: with full support for

projection/aggregation and subselects.

* Runtime performance monitoring: via JMX or local Java API, including a

second-level cache browser.

* Brand new AST-based HQL parser: bulk update/delete enhancement, better

syntax validation.

* JBoss EJB 3.0 preview: support for annotation-based O/R mappings, full

support for EJB-QL 3.0, support for EJB 3.0 persist()/merge() lifecycle,

JACC-based security model.

* Hibernate Tools preview: a full suite of Eclipse plugins for working

with Hibernate 3.0, including mapping editor, interactive query

prototyping, schema reverse engineering tool.

* Many new extension points: including a new, extensible, event-driven

architecture

* Documentation enhancements.

* Brand new test suite, including many useful examples of exotic Hibernate

mappings.

A full list of new features may be found at:

http://www.hibernate.org/About/RoadMap

Download link:

http://www.hibernate.org/Download

The Hibernate 3.0 core is 68,549 lines of Java code together with 27,948 lines

of unit tests, all freely available under the LGPL, and has been in

development for well over a year. We would like to thank the many people who

contributed to this release!

The Hibernate Team,

Max Rydahl Andersen, JBoss Inc

Christian Bauer, JBoss Inc

Emmanuel Bernard

David Channon

Joshua Davis

Steve Ebersole, JBoss Inc

Michael Gloegl

Gavin King, JBoss Inc

Anthony Patricio

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