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Back in the early days of Infinispan (since our first public announcement, in fact) we always had it in mind to expose a JPA-like layer to Infinispan. Initially this was as a replacement to the fine-grained replication that JBoss Cache's POJO Cache
variant offered, but it grew beyond just a technique to do fine-grained
replication on complex object graphs. The fact that it offered a
familiar data storage API to Java developers was big. Huge, in fact.
we realised JPA-on-Infinispan was firmly on the roadmap. The original
plan was to implement the entire set of JPA APIs from scratch, but this
was a daunting and Herculean task. After much discussion with core
Hibernate architects and Infinispan contributors Emmanuel Bernard and
Sanne Grinovero, we came to a decision that rather than implementing all
this from scratch, it served both Infinispan and the community better
to fork Hibernate's core ORM
engine, and replace the relational database mappings with key/value
store mappings. And we get to reuse the mature codebase of Hibernate's
session and transaction management, object graph dehydration code,
And Hibernate OGM (Object-Grid Mapping) was born. After initial experiments and even a large-scale public demo at the JBoss World 2011 Keynote
, Emmanuel has officially blogged
about the launch of Hibernate OGM. Very exciting times, Infinispan now has a JPA-like layer. :-)
To reiterate a key point from Emmanuel's blog, Hibernate OGM is still in
its infancy. It needs community participation to help it grow up and
mature. This is where the Infinispan community should step in; consider
Hibernate OGM as Infinispan's JPA-like layer and get involved. For
more details, please read Emmanuel's announcement
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