Re: Prevayler Facade

Ups ... sorry :P a @Query!

I write it again:

The @Query annotation is enough. Actually i'm not using a default
transaction when
  the method is not marked, thus i'm annotating with @Transaction. But this
functionality could be changed by a parameter.

A @Transaction annotation only is needed if you

On Wed, Jul 22, 2009 at 2:36 PM, Klaus Wuestefeld <[email protected]
> wrote:

> @Transaction or @Query?
>
> On Wed, Jul 22, 2009 at 2:32 PM, Diego Miranda<[email protected]>
> wrote:
> > That's  right! A @Transaction annotation is enough, then the Proxy can
> infer
> > the type of transaction. Actually i'm not using a default transaction
> when
> > the method is not marked. I've been thinking in adding some attributes to
> > the annotations, like encrypt="true" but i havent time to implement this
> > yet.
> >
> > D.
> >
> > On Wed, Jul 22, 2009 at 1:17 PM, Klaus Wuestefeld
> > <[email protected]> wrote:
> >>
> >> Interesting.
> >>
> >> Void methods without the annotation can default to Transaction.
> >> Methods with a return value and without an annotation can default to
> >> TransactionWithQuery.
> >>
> >> So I think you might only need the @Query annotation. It that right?
> >>
> >> See you, Klaus.
> >>
> >>
> >>
> >> On Wed, Jul 22, 2009 at 12:03 PM, Diego Miranda<[email protected]
> >
> >> wrote:
> >> > Hi all!
> >> >
> >> > For a project i'm developing i wrote a simple proxy that implements
> the
> >> > transactions using annotations.
> >> > Rigth now, this proxy needs that you implement an interface with the
> >> > annotations. But the idea is that you
> >> > define your prevalent object (without any interface) with those
> >> > annotations.
> >> > These annotations are the prevayler
> >> > transactions:
> >> >
> >> > @Query
> >> > @Transaction
> >> > @TransactionWithQuery
> >> >
> >> > An example, following the prevayler demo examples:
> >> >
> >> > public interface IBank implements Serializable {
> >> >
> >> >        @TransactionWithQuery public Account createAccount (String
> >> > holder)
> >> > throws Account.InvalidHolder;
> >> >        @Transaction public void deleteAccount(long number) throws
> >> > AccountNotFound;
> >> >
> >> > }
> >> >
> >> > The implementation of IBank:
> >> >
> >> > public class Bank implements IBank {
> >> >
> >> >     ...
> >> >     public Account createAccount(String holder) throws
> >> > Account.InvalidHolder
> >> > {
> >> >         Account account = new Account(nextAccountNumber, holder);
> >> >         accountsByNumber.put(new Long(nextAccountNumber++), account);
> >> >
> >> >         if (bankListener != null)
> bankListener.accountCreated(account);
> >> >         return account;
> >> >     }
> >> >
> >> >     public void deleteAccount(long number) throws AccountNotFound {
> >> >         Account account = findAccount(number);
> >> >         accountsByNumber.remove(new Long(number));
> >> >         if (bankListener != null)
> bankListener.accountDeleted(account);
> >> >     }
> >> > ...
> >> >
> >> > The code remains the same.
> >> >
> >> > Generating the proxy is straighforward:
> >> >
> >> > Bank bank = PrevaylerProxy.createInstance ( IBank.class, new Bank(),
> >> > "Bank"
> >> > );
> >> >
> >> > If you found this is useful (and if possible, of course) i would be
> glad
> >> > to
> >> > contrib with the code. :)
> >> >
> >> > Regards
> >> >
> >> > Diego
> >> >
> >> >
> >> >
> >> >
> >> > --
> >> > Ley de Hofstadter: Siempre toma más tiempo del que se preveía, aun
> >> > cuando se
> >> > tenga en cuenta la Ley de Hofstadter.
> >> >
> >> >
> >> >
> ------------------------------------------------------------------------------
> >> >
> >> > _______________________________________________
> >> > To unsubscribe go to the end of this page:
> >> > http://lists.sourceforge.net/lists/listinfo/prevayler-discussion
> >> > _______________________________________________
> >> > "Databases in Memoriam" -- http://www.prevayler.org
> >> >
> >> >
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> _______________________________________________
> >> To unsubscribe go to the end of this page:
> >> http://lists.sourceforge.net/lists/listinfo/prevayler-discussion
> >> _______________________________________________
> >> "Databases in Memoriam" -- http://www.prevayler.org
> >
> >
> >
> > --
> > Ley de Hofstadter: Siempre toma más tiempo del que se preveía, aun cuando
> se
> > tenga en cuenta la Ley de Hofstadter.
> >
> >
> ------------------------------------------------------------------------------
> >
> > _______________________________________________
> > To unsubscribe go to the end of this page:
> > http://lists.sourceforge.net/lists/listinfo/prevayler-discussion
> > _______________________________________________
> > "Databases in Memoriam" -- http://www.prevayler.org
> >
> >
>
>
> ------------------------------------------------------------------------------
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> To unsubscribe go to the end of this page:
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>



-- 
Ley de Hofstadter: Siempre toma más tiempo del que se preveía, aun cuando se
tenga en cuenta la Ley de Hofstadter.

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