Valentina for iPhone - Discussion.

[Trausti Thor Johannsson]

I can't wait for it Ruslan.  When will you have a version that will run at
least in the iPhone simulator ?I honestly can't wait.  As easy it is to use
sqlite in realbasic, it is a major pain to use in C.


Trausti

On Wed, Dec 10, 2008 at 2:04 PM, Ruslan Zasukhin <sunshine at public.kherson.ua
> wrote:

> On 12/10/08 2:45 PM, "Thorsten Hohage" <thohage at genericobjects.de> wrote:
>
> Hi Thorsten,
>
> >> On 12/10/08 1:40 PM, "Jochen Peters" <jpeters at genericobjects.de>
> >> wrote:
> >>
> >>>> * Do you see ideas of tasks when somebody need power of Valentina to
> >>>> manage
> >>>> say 8-16Gb database on small iPhone device ?
> >>> No - i do not think that the iphone will become the storage device
> >>> for
> >>> large amount of data! In fact on iPhone we use smaller db's - maybe
> >>> subsets of bigger ones on some central server...
> >>
> >> If somebody have offline needs ?
> >
> >
> > Keep in mind one real IMPORTANT issue ... there are only about 128 MB
> > memory available in the iPhone for all the apps. If there is an app
> > consuming to much memory, then iPhone OS is simply killing this app,
> > because there must always enough room left for an incoming call or SMS.
>
> Yes I know this  .. And what problems? :)
>
> Valentina is perfect running with cache 3-10MB.
>    With Valentina you do not need load all in RAM, so overhead to cache
> size is very minimal. May be more 1-5 Mb.
>
> Their SqlLite book example show constant grow of RAM eating by loaded
> objects. Imho stupid.  Of course this is not required technique, they point
> this.
>
> > So of course it will be possible to handle a 4GB db on the iPhone,
> > caching and many other things must be re-thinks twice, its not only
> > about to recompile the libs and go.
>
> Nothing to rethink here Thorsten.
>
> As I see it Valentina perfectly fit to needs of iPhone in this regard. It
> have own cache of fixed size and not eat more RAM of that. Even for huge
> dbs
> on desktop we told people use 30-50MB cache ONLY.
>
> > Furthermore while there is indeed Obj-C 2 on the iPhone, it's NOT the
> > full "standard", so especially the garbage collection is not
> > implemented. The developer must care about memory handling. It's not
> > only the issue of optimizing Valentina for a 4GB db with so many
> > memory available, the developer must really wrap his brain about
> > wrapping the data into the objects for the app.
>
> Sorry I have not catch this.
>
> * iPhone has Objc 2.0?
>
> * who not implements garbage collection ?
>    V4CC ?
>
>
> * NO NEED to think about Objects !
>    We use other style of navigation by records.
>    record by record.
>    You have few tables, Each table have current record.
>    Only this record is in RAM.
>
> We do not load million records into million objects as this do CoreData or
> other OO frameworks.
>
>
> --
> Best regards,
>
> Ruslan Zasukhin
> VP Engineering and New Technology
> Paradigma Software, Inc
>
> Valentina - Joining Worlds of Information
> http://www.paradigmasoft.com
>
> [I feel the need: the need for speed]
>
>
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