Michael Bayer wrote: > On May 9, 2007, at 4:08 PM, Rick Morrison wrote: > > >> Hey Mike, >> >> I've really gotten to like the generative style of query building >> that the ORM layer uses, and I find myself developing a number of >> patterns that use that style to >> good advantage. >> >> Today I found myself struggling with a query in the low-level SQL- >> API layer that the generative approach would make really easy -- is >> there a way to get the same kind of generative effect in the lower >> layers? >> >> Right now I'm kind of hacking something that uses copy.copy() on >> the select(), and that surprisingly seems to work, but makes me >> think there must be a better way. >> >> >> > > yeah i really should have just imitated Hibernate more closely when i > started this thing. > Well, I can tell you that I am so glad SA does not have HQL (or does it ?). > theres no technical reason generativeness couldnt be applied to > ClauseElements except for potential API messiness. we do have > methods on select() that modify it, such as append_whereclause(), > order_by(), and such...if they just returned "self", then you could > act more "generatively" with it, i.e. select(...).append_whereclause > ().order_by()..etc. > > then again, true "generativeness" would have simpler method names > like just "where()", "from()", etc. and I suppose those arent a big > deal to add. Generative select clauses would be awesome. append_whereclause always did sound slightly verbose to me.
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