From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Tue, 9 Mar 2010 22:46:00 +0000 (-0500)
Subject: - moved the logic within _BindParamClause which decides about coercing the bind's... 
X-Git-Tag: rel_0_6beta2~62^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dcd65902523f08dc1027d4d5a013b2c1f95bc230;p=thirdparty%2Fsqlalchemy%2Fsqlalchemy.git

- moved the logic within _BindParamClause which decides about coercing the bind's type
based on the compared type into AbstractType.   The new method is called _coerce_compared_value()
and receives the operator and the raw python value to be coerced.    TypeDecorator
overrides this to provude the "old" 0.5 behavior of coercing the other side of the expression
unconditonally.
- added docs to TypeDecorator attempting to explain this though they are a little verbose.
- added caveats to Interval, which in "non-native" mode can't really handle proper expression behavior.  the "typing" would have to move into the compiler, such that on a DB like SQLite we're actually wrapping left/right side into its epoch functions, etc., its a big job.  current infrastructure, as powerful as it is, still isn't at that level.
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dcd65902523f08dc1027d4d5a013b2c1f95bc230