Re: Prevalent Repository

Hi Diego,

Sounds cool.

Does each method of PrevalenceRepository send a Query or Transaction to an
underlying Prevayler instance?

Are the Luncene indexes stored in the same Prevayler, or in Lucene's own
filesystem storage? Do you care about transactional consistency between the
indexes and the data? (You might not.)

Cheers,
Justin

--
Agile Focus - http://agilefocus.com/


On Mon, May 18, 2009 at 2:03 PM, Diego Miranda <[email protected]>wrote:

> Hi to all!
>
> We are using Prevayler in several projects. For those projects we've
> created a Prevalent
> Repository. This repository allows the objects to be queried and indexed
> with Lucene.
> We provide a query and indexing abstraction to simplify the search of the
> objects stored
> in the repository.
>
> Here, some examples:
>
> - Creating a Repository and storing data:
>
> PrevalenceRepository prevalence = PrevalenceRepository.newInstance();
> Repository repository = prevalence.openRepository ("MyApp");
>
> repository.storeOrUpdate (person);
> repository.storeOrUpdate (collectionOfPersons);
>
> - Creating index:
>
> repository.createIndex (Person.class, "addresses.state");
> repository.createIndex (Person.class, "lastName");
>
> - Querying the objects:
>
> QueryCriteria query = from(Person.class).where(
>             and(eq("addresses.street", "Melo"),eq("lastName", "Smith"))
>             );
> Collection<Person> persons = (Collection<Person>)repository.find(query);
>
>
> - Deleting objects:
>
> repository.delete ( personOid )
>
> - Working with the repository data
>
> repository.executeDeterministic ( new DeterministicOperations (),
> argument1, argument2 );
>
>
> I'd like to know (if possible) what do you think about this!
>
> Best regards!
> Diego Miranda
> diego.miranda at gmail dot com
>

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