Re: Another source of confusion.....

>> These files are required as if you want to do your
>> own session management
>> with Hibernate, you need to provide your own DAO
>> implementation. Otherwise
>> the PropertySet DAO does the flush/close and your
>> performance goes down the
>> toilet.
> 
> You like to say that opensymphony implementation is
> designed with  poor  performance  in mind :) ?
> Well, there are some thing in propertyset  which can
> be done better ( some patches from me are there ).

No, it's because Hibernate necessitates that. The default implementation
DOES work, but it's very slow due to lots of connections opened/closed.
Writing your own implementations will speed things up almost 100x for
serious apps. (And it's very simple to do).
 
> And because it seems that both of them ( ps & osu )
> are finally in permanent location it would be
> easier to understand what's going on.

Indeed. 
 
>> The recommended method of using this is:
>> - Implement HibernateConfigurationProvider yourself
>> - Make it return your own DAO, which implements the
>> DAO interface
>> - Use DAOUtils class to fill in the body of methods
>> which are long and
>> laborious to recreate (see DAOImpl)
> 
> So you mean: leave session management to DAOImpl and
> let DAOUtils do other work?

Yes - exactly. For instance in our application we have a ThreadLocal and a
ServletFilter which handle the Hibernate session management stuff. So our
DAOImpl is very simple (usually one line per method).
 
> BTW, I would like to have some new features:
> - clearing/removing propertyset
> - bulk load of properties by prefix / without prefix
> - also removal by prefix.
> I like to have later 2 because I'm storing user
> profiles in property set marshalling classes to there.
> I construct property name from class name + property
> name - it's not wise to read each property in its own
> session. 

Sure - feel free to add them?

M



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