features keynames which prefer mapped attribute
names over column keys, column keys over
column names, i.e.
Query(Class.foo, Class.bar) will have names
"foo" and "bar" even if those are not the names
of the underlying Column objects. Direct
Column objects such as Query(table.c.col) will
return the "key" attribute of the Column.
- fixed merge() collection-doubling bug when merging
transient entities with backref'ed collections.
[ticket:961]
- merge(dont_load=True) does not accept transient
entities, this is in continuation with the fact that
merge(dont_load=True) does not accept any "dirty"
objects either.
occurs upon mapper construction. this allows us to have fewer
calls to mapper.compile() and also to allow class-based properties
to force a compilation (i.e. User.addresses == 7 will compile all
mappers; this is [ticket:758]). The only caveat here is that
an inheriting mapper now looks for its inherited mapper upon construction;
so mappers within inheritance relationships need to be constructed in
inheritance order (which should be the normal case anyway).
Mike Bayer