Re: [Zope-DB] Unified DA for Zope 2 using SQLAlchemy?
--On 25. März 2007 23:54:14 +0200 Maciej Wisniowski [EMAIL PROTECTED] wrote: In the Zope 2 worlds we have dedicated database adapters for different databases. Fortunately the Python world made us a wonderful present called SQLAlchemy that abstracts the different databases. In the Zope world we have some wrappers like z3c.zalchemy and z3c.sqlalchemy... basically they deal with connection handling, mapper handling and integration with the Zope transaction system. Would it make sense to replace all different Zope DAs with a generic DA on top of one of the z3c.* wrappers? I think it would not be too hard to write such a DA...or am I missing something? Thoughts? Now (in Zope2) we have things like ZOracleDA (DCOracle2), ZPsycopgDA etc. that are adapters to these specific databases. They're based on Shared/DC/ZRDB/. In Zope3 there are also such adapters eg. one using cx_Oracle. They're based on Zope3 rdb module. What do you mean by 'replacing' them? You want wrapper build for z3c.* to be used instead of ZRDB (rdb)? You're talking about Zope2 or Zope3 too? The subject says Zope 2:-) -aj pgplwOvDfcK4O.pgp Description: PGP signature ___ Zope-DB mailing list Zope-DB@zope.org http://mail.zope.org/mailman/listinfo/zope-db
Re: [Zope-DB] Unified DA for Zope 2 using SQLAlchemy?
Now (in Zope2) we have things like ZOracleDA (DCOracle2), ZPsycopgDA etc. that are adapters to these specific databases. They're based on Shared/DC/ZRDB/. In Zope3 there are also such adapters eg. one using cx_Oracle. They're based on Zope3 rdb module. What do you mean by 'replacing' them? You want wrapper build for z3c.* to be used instead of ZRDB (rdb)? You're talking about Zope2 or Zope3 too? The subject says Zope 2:-) A... yes I've missed that :) So does your proposal is that the only support for RDBMS in zope 2.x should be via ORM like adapter? Or this should be something additional to current ZRDB, or you want to change (simplify?) ZRDB to be similiar to these z3c wrappers (zope transaction handling, connection pooling etc)? If you say about going into ORM adapters then few things I wonder about are calling specific (complicated) queries and/or stored procedures from databases. How does SQLAlchemy support this? Another thing, what about speed of ORMs in comparision to traditional queries with ZSQLMethods? -- Maciej Wisniowski ___ Zope-DB mailing list Zope-DB@zope.org http://mail.zope.org/mailman/listinfo/zope-db
