>From an outsider's perspective, you probably need a new proposal. Un saludo,
Alex. > -----Mensaje original----- > De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > Enviado el: jueves 25 de abril de 2002 3:06 > Para: Jakarta General List > Asunto: RE: RE: Subproject Proposal - crossdb > > > So, I'm kind of curious what the general consensus is > regarding this. Seems to be in various directions. > > Travis > > ---- Original Message ---- > From: Jeff Schnitzer <[EMAIL PROTECTED]> > Sent: 2002-04-24 > To: Jakarta General List <[EMAIL PROTECTED]> > Subject: RE: Subproject Proposal - crossdb > > > From: Jon Scott Stevens [mailto:[EMAIL PROTECTED]] > > > > on 4/22/02 12:19 AM, "Leo Simons" <[EMAIL PROTECTED]> wrote: > > > > > While these may not be accurate summaries, I hope you now do see > that > > > CrossDB and Torque are not, in the majority of use cases, > alternatives > > > to one another. > > > > I'm sorry. I don't see that. Torque can do everything crossdb can do > and > > more. > > Uhhh: Outer joins? Fetch data across multiple objects? Aggregation > queries? > > Torque is an O/R mapping framework, with all of the inherent > limitations > of trying to make relational data look like objects. Crossdb is a > database-independent abstraction of SQL (not JDBC, that's an important > distinction!). > > These are not competitive facilities; in fact they should be highly > complementary. At the moment, Torque's extremely limited Criteria > object has a tough time with simple conditions like "WHERE bob > 5 and > bob < 10". Subqueries and joins are hopeless. > > Crossdb is what Torque desperately needs - a good database-independent > way of specifying sophisticated conditions. The WhereClause > in Crossdb > could be substituted wholesale for Criteria. > > And for those of us that have to query our databases and > obtain results > which do not map 1-to-1 with a single object (such as anything that > involves a group by or an outer join), we can bypass Torque and still > have database independence. > > I think both Torque and Crossdb (if it has the community) are > very much > needed as top-level Jakarta projects. They are both bread-and-butter > server development tools. Putting Crossdb under Torque makes about as > much sense as putting Torque under Turbine. > > Oh, and Jon, the comparison with ECS is not very good. Web > pages are a > creative endeavor, whereas SQL statements are short and built by > hard-core programmers. Also, simple HTML does not suffer from the > problem of every web browser on the planet requiring a slightly > different syntax for putting columns in a table... Velocity might be > less useful if a separate template had to be written for every single > web browser. > > Jeff Schnitzer > [EMAIL PROTECTED] > > -- > To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]> -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
