General Arel, ActiveRecord Adapter question ?

rubyonrails-talk
1

Hi,

I'm considering to make my database* ActiveRecord compatible. To this end I have some questions, or would appreciate pointers where to ask:

- as the db is not sql, I think writing an ActiveRecord/sql adapter isn't really the way to go. But then what is? - I've seen an old Arel had a memory implementation in ruby. As my db is a memory db (in ruby/C) this may be a way, alas the code I see has _little_ comments. Has anyone attempted such a thing (ie a non-sql implementation in arel) - is there a specific activerecord /arel mailing list ?

Thanks for any pointers (and sorry this is somewhat of-topic for most)

Torsten

*warpdb is a memory object(ish) database for ruby http://github.com/dancinglightning/warpdb It works for basic things, but has yet to see a real project, so you've been warned.

2

Hi,

I'm considering to make my database* ActiveRecord compatible. To this end I have some questions, or would appreciate pointers where to ask:

Do you really mean ActiveRecord compatible or do you just want to implement the ActiveModel interface ?

Fred

3

I think that your problem is not non-sql database. Arel is "Relational Algebra for Ruby", so since you use non-relational DB, it's not a good idea to implement any adapters for Arel. But, Rails 3 has changed ActiveRecord's model architect (e.g. added ActiveModel), so you should try to implement some adapter for ActiveRecord, but not for the Arel. (Arel is just a query interface for ActiveRecord for relational databases)

4

Hi,

Do you really mean ActiveRecord compatible or do you just want to implement the ActiveModel interface ?

Yes, I'll implement the ActiveModel interface, but what I'm asking is complete compatibility to an application running against say mysql.

I'm quite willing to adapt the db a bit, but I once tried writing an sql interpreter and ran out of fun, so tha's what I'm trying to avoid. All else goes.

Torsten