Re: Prevalent Repository

Well, actually we have made a similar approach, but we extends from
JavaSerializer. I think that using a wrapper (as you did) is better because
you can reuse other Serializers.

But, what we would like to do is to encrypt only those transactions that
require to be encrypted. To achive this we have created two classes
SecureAnnotatedTransaction and SecureAnnotatedTransactionWithQuery. Then the
Serializer makes serialization according the type of transaction.

Cheers.
Diego

On Tue, May 19, 2009 at 6:16 PM, Justin T. Sampson <[email protected]>wrote:

> On Tue, May 19, 2009 at 12:19 PM, Diego Miranda <[email protected]>wrote:
>
>> Yes, our idea is to publish the code. We are doing some refactoring now
>> and adding some functionality like encrypting the snapshots and journals,
>> deterministics triggers, and listeners over the objects.
>
>
> I've added some simple Serializer decorators for compression and encryption
> on the master branch[1], to be included in the upcoming Prevayler 2.4
> release. I remember the main challenge I ran into when I first tried to
> compress and encrypt journals was that compression and encryption mechanisms
> don't necessarily make it easy to read or write exactly to variable-length
> record boundaries (which is how transactions are written to the journal). So
> the approach I ended up with simply wraps the journal serializer in order to
> compress or encrypt each individual transaction, allowing Prevayler to
> continue to do its normal parsing of the journal file structure.
>
> [1]
> http://github.com/jsampson/prevayler/tree/master/core/src/main/java/org/prevayler/foundation/serialization
>
> What approach are you taking for encrypting journals?
>
> Cheers,
> Justin
>
>
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