How to store the elements on the DB I think will depend on which DBMS you use. With a, e.g., a ORDBMS, we can replicate exactly the structure of the MooseModel within the DB. In my mind I will have a MoosePersistentModel object which hold a reference to the MooseModel stored into the DB and that translate all the operations you can do to search, add, remove and modify an entity in executable SQL and send it to the DB. It sounds really ambitious, but I think I will realize soon after I will start the development if this idea can work or not.

Now I just need to identify which DBMS to use and I should decide which persistent framework in Pharo to use. I was thinking at Glorp (with a Postgres DB behind) or at Magma, although I never used neither of them. do you think that they would be suitale for my purpose? Do you have any other candidate to propose? Do you know if there is some nice "getting start documentation" for Magma and Glorp?

2013/8/19 Stéphane Ducasse <stephane.ducasse@inria.fr>

HI fabrizio

may be you should ask in the pharo mailing-list.
Now the problem to me is how to persist a graph of pointers.

In early version of Moose long time ago there were no pointers to methods, class….but id
So all the code was full of

FAMIXMethod>>msClass
Model entityWithId: self msClassId

and you could easily plug a stupid DB behind.
Then we decided to use pointers.

But now to me this is not clear how we can save/load part of a large graph.

stef

> Hi,
> I will soon need to analyze quite some java code at once and I'm already sure that one Moose image will not be enough for all that code. Therefore I would like to try to persist the model on a database. Do you have any pointer to a possible persistence manager/OODBMS/RODBMS to use for that purpose?
>
> Thanks in advance,
> Fabrizio
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