Magma Tutorial / Code examples

[Göran Krampe]

Hi!

Brent Pinkney wrote:
> Hi Milan,
> 
> Ther will be a lot of documentation forthcoming on Magma soon(-ish).

Cool! :)

> I would suggest the Lava test cases as a decent place to start.
> 
> I would also ping this list for help.
> 
> Brent

As noted Gjallar uses Magma but definitely not in the "easiest manner". :)

Since Gjallar uses "reified transactions" in the form of a class 
hierarchy with one subclass for each "kind" of database change - and 
then instantiates such a class, feeds it with the proper data, and then 
tell it to "execute" on the model, finally putting it away for 
historical reasons in an ever growing MagmaCollection - it definitely 
makes it hard to "find" the use of Magma in Gjallar.

It is really not a good example of how to use an OODB/Magma in the 
"vanilla" case.

Having said that Gjallar is still an interesting example since we use 
both strategies, indexing and quite a complex object model - all working 
quite smoothly.

For example, we have a customer running a Gjallar instance since january 
without any issues - the VM has not even been restarted since then.

regards, Göran