ANN: Activate 1.2 - Polyglot Persistence

[Flavio W. Brasil]

Activate 1.2 is available at maven central. 

The main feature of this version is the Polyglot Persistence. For example, an entity from a relational database can have a property that is an entity from a non-relational database. Transactions are distributed using the two-phase commit protocol.

Another important feature is the optimistic offline locking. Now it is possible to use Activate as a Distribute STM without the need to use the Coordinator central service.

Release notes (with links to the documentation):

- Scala 2.10

- Polyglot persistence

- Optimistic offline locking

- Play 2.1 support

- DB2 jdbc dialect

- Limited queries

- Better transient field support

- Custom serializers

- Nested list order preservation

- Bug fixes

-- 

Flávio W. Brasil

http://activate-framework.org

{persistence as it should be}

[Rafał Krzewski]

Hi, 

I've been reading up on Akka recently, and I found the STM-related aspects very interesting. While thinking about state & transactions I've recalled Activate and went to check if it provides STM functionality. I was pleased to find that it in fact does, but I've noticed that Activate is using your own Radon-STM library. It appears that http://nbronson.github.com/scala-stm/ that is used by Akka is going to be included in Scala standard library in near future (http://nbronson.github.com/scala-stm/expert_group.html). Does Radon-STM have some features, relevant to Activate use case, that Scala-STM does not? Or is it just because you developed it before Scala-STM was available?

I'm also wondering if are considering replacing Radon-STM with Scala-STM if the latter is eventually included in the standard library. It could be beneficial from interoperability point of view.

Cheers,

Rafał

[Flavio W. Brasil]

Hello Rafał,

The RadonSTM was designed to be the foundation of a durable STM, so it has some particular characteristics like transactional unit destroying, listeners and context-based usage. I think that a migration to use the scala-stm difficultly will be in the Activate roadmap.

Anyway, thanks for the suggestion! :)

-- 

Flávio W. Brasil

http://activate-framework.org

{persistence as it should be}

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