selective commit

Hi Milan, I don't understand -- ...you have a (Magma?) database and
you want to commit changes to some of the objects in the database but
not all of them?  That obviously works so I guess you are asking about
something different -- could you please clarify?

On Mon, Jun 11, 2012 at 1:42 PM, Milan Mimica <[hidden email]> wrote:
> Hi
>
> Do I understand correctly that Magma doesn't support commit on per instance
> basis? I want to commit only some of the some instances I have loaded from
> database.
>
>
> --
> Milan Mimica
> http://sparklet.sf.net
>

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>

Ah ok.  Yes, there are actually two ways to do it.

1) you can implement #maTransientVariables on any class to declare its
named inst-vars which should be ignored by Magma.  Just answer an
Array of the inst-var names (it can be calculated dynamically).  This
is the easiest solution to cause Magma to ignore particular object
links.

2) Your example was with Array though, which doesn't have named
inst-vars.  For that you would have to use a MaImmutabilityStrategy
which lets you specify objects to be immutable by a condition block.
It can even ignore a reference based on conditions of the *Referencer*
(e.g.,  the referencing object) instead of only the referenced object.
 See MagmaTestCase>>#commitWithImmutabilityStrategy for usage details.