JCP (Java Community Process) has approved next version of Java Persistence API (JSR-317). Here is the link: JSR-317 (JPA 2.0).
The scope of JPA 2.0 is :
- Expanded object/relational mapping functionality, including greater flexibility in combining existing mapping options, support for collections of embedded objects, multiple levels of embedded objects, ordered lists, combinations of access types, etc.
- Additions to the Java Persistence query language
- An API for "criteria" queries
- Standardization of sets of "hints" for query configuration and for entity manager configuration
- Standardization of additional metadata to support DDL generation and "Java2DB" mapping
- Expanded pluggability contracts to support efficient passivation and replication of extended persistence contexts in Java EE environments
- Standardization of additional contracts for entity detachment and merge, and persistence context management
Support for validation
Its good to know that JPA 2.0 would include criteria API. I've been using Hibernate for last couple of years and have always liked criteria-API.
Almost all leading companies (including IBM, BEA, Oracle, Red Hat Sun etc.) have voted 'Yes' for this specification. Apache has voted 'No' on the ground that this spec lead - Sun - is in violation of the JSPA http://www.apache.org/jcp/sunopenletter.html and therefore shouldn't be allowed to start another JSR until the above matter is resolved. (Link: Voting Result)
Link: SUN's presentation on JPA 2.0 in JavaOne Conference 2007
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Saltmarch Media is organizing Great Indian Developer Summit event in Bangalore. This Summit will be a boost for the Software Developing Industries. It covers the topics like .Net, Java, Java 2 EE, Java Persistence, EJB, JPA 2.0 and Richweb and has 1 day workshop at the end as well. Any one attending this event?
Register @ www.developersummit.com
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Many thanks! Excellent information.
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