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used only as an ``alias()`` construct, it would not render using the
WITH keyword. Also in 0.8.3, 0.7.11.
[ticket:2783]
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are transferred correctly for when .key is present; tests have been enhanced
to test this condition for render, result map construction, statement
execution. [ticket:2790]
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any supported CPython 2 or 3 environment. [ticket:2161]
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if the given target/event/fn is set up to listen.
- repair mutable package which is doing some conditional event listening
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provided via the :func:`.event.remove` function.
[ticket:2268]
- reorganization of event.py module into a package; with the addition of the
docstring work as well as the new registry for removal, there's a lot more code now.
the package separates concerns and provides a top-level doc for each subsection
of functionality
- the remove feature works by providing the EventKey object which associates
the user-provided arguments to listen() with a global, weak-referencing registry.
This registry stores a collection of _ListenerCollection and _DispatchDescriptor
objects associated with each set of arguments, as well as the wrapped function
which was applied to that collection. The EventKey can then be recreated for
a removal, all the _ListenerCollection and _DispatchDescriptor objects are located,
and the correct wrapped function is removed from each one.
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:class:`.AttributeImpl` as an "initiator" token has been changed;
the object is now an event-specific object called :class:`.attributes.Event`.
Additionally, the attribute system no longer halts events based
on a matching "initiator" token; this logic has been moved to be
specific to ORM backref event handlers, which are the typical source
of the re-propagation of an attribute event onto subsequent append/set/remove
operations. End user code which emulates the behavior of backrefs
must now ensure that recursive event propagation schemes are halted,
if the scheme does not use the backref handlers. Using this new system,
backref handlers can now peform a
"two-hop" operation when an object is appended to a collection,
associated with a new many-to-one, de-associated with the previous
many-to-one, and then removed from a previous collection. Before this
change, the last step of removal from the previous collection would
not occur.
[ticket:2789]
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that ``discriminator_on_association.py`` makes use of single table
inheritance do the work with the "discriminator". Also
added a true "generic foreign key" example, which works similarly
to other popular frameworks in that it uses an open-ended integer
to point to any other table, foregoing traditional referential
integrity. While we don't recommend this pattern, information wants
to be free. Also in 0.8.3.
- Added a convenience class decorator :func:`.as_declarative`, is
a wrapper for :func:`.declarative_base` which allows an existing base
class to be applied using a nifty class-decorated approach. Also
in 0.8.3.
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"propagate" flags could potentially be mis-configured in some
"unmapped base class" configurations. Also in 0.8.3.
[ticket:2786]
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:class:`.Column` object would not be propagated. Also in 0.8.3, 0.7.11.
[ticket:2784]
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when loading mapped entities. The function overhead of applying
a per-object deferred callable to an instance at load time was
significantly higher than that of just loading the data from the row
(note that ``defer()`` is meant to reduce DB/network overhead, not
necessarily function call count); the function call overhead is now
less than that of loading data from the column in all cases. There
is also a reduction in the number of "lazy callable" objects created
per load from N (total deferred values in the result) to 1 (total
number of deferred cols).
[ticket:2778]
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regexp apparently were not fully implemented correctly; while the
arguments were accepted, in practice they would have no effect;
this has been fixed. Also in 0.8.3.
[ticket:2781]
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form of a some expressions when referring to the ``.c`` collection
on a ``select()`` construct, but the ``str()`` form isn't available
since the element relies on dialect-specific compilation constructs,
notably the ``__getitem__()`` operator as used with a Postgresql
``ARRAY`` element. The fix also adds a new exception class
:class:`.UnsupportedCompilationError` which is raised in those cases
where a compiler is asked to compile something it doesn't know
how to. Also in 0.8.3.
[ticket:2780]
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is recreated, due to a disconnect error. This fixes a particular
issue in the Oracle 8 dialect, but in general the dialect.initialize()
phase should only be once per dialect. Also in 0.8.3. [ticket:2776]
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has_table issues are OK. On OSX forget it.
- still some issues with PY3k + pyodbc + decimal values it doesn't expect, not sure
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with @_legacy_signature, will inspect incoming listener functions
to see if they match an older signature, will wrap into a newer sig
- add an event listen argument named=True, will send all args as
kw args so that event listeners can be written with **kw, any combination
of names
- add a doc system to events that writes out the various calling styles
for a given event, produces deprecation messages automatically.
a little concerned that it's a bit verbose but will look at it up
on RTD for awhile to get a feel.
- change the calling signature for bulk update/delete events - we have
the BulkUD object right there, and there's at least six or seven things
people might want to see, so just send the whole BulkUD in
[ticket:2775]
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:meth:`.Insert.from_select`. Given a list of columns and
a selectable, renders ``INSERT INTO (table) (columns) SELECT ..``.
While this feature is highlighted as part of 0.9 it is also
backported to 0.8.3. [ticket:722]
- The :func:`.update`, :func:`.insert`, and :func:`.delete` constructs
will now interpret ORM entities as FROM clauses to be operated upon,
in the same way that select() already does. Also in 0.8.3.
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when an object we moved from "persistent" to "pending"
using the :func:`.make_transient` function, for operations
involving collection-based backrefs.
[ticket:2773]
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checked out count if an existing pooled connection failed to reconnect
after an invalidate or recycle event. Also in 0.8.3.
[ticket:2772]
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table is a SELECT with its own bound parameters, where the positioning
of the bound parameters would be reversed versus the statement
itself when using MySQL's special syntax.
[ticket:2768]
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reflected by the SQLite dialect; courtesy Russell Stuart.
[ticket:2764]
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by name in a string argument used with ``order_by``,
``primaryjoin``, or similar in :func:`.relationship`,
in addition to column-bound attributes. [ticket:2761]
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ConnectionRecord/ConnectionFairy is clear;
make sure that the DBAPI connection passed to the reset-on-return events/dialect hooks
is also a "fairy", so that dictionaries like "info" are available. [ticket:2770]
- rework the execution_options system so that the dialect is given the job of making
any immediate adjustments based on a set event. move the "isolation level" logic to use
this new system. Also work things out so that even engine-level execution options
can be used for things like isolation level; the dialect attaches a connect-event
handler in this case to handle the task.
- to support this new system as well as further extensibiltiy of execution options
add events engine_connect(), set_connection_execution_options(), set_engine_execution_options()
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This controls the value of the ``retaining`` flag sent to the
``commit()`` and ``rollback()`` methods of the DBAPI connection.
Defaults to False. Also in 0.8.2, where it defaults to True.
[ticket:2763]
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actual mock objects from the mock library. I'd like to use mock
for new tests so we might as well use it in obvious places.
- use unittest.mock in py3.3
- changelog
- add a note to README.unittests
- add tests_require in setup.py
- have tests import from sqlalchemy.testing.mock
- apply usage of mock to one of the event tests. we can be using
this approach all over the place.
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value is present
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mapped class where the polymorphic discriminator has been assigned
to a value that is invalid for the class. [ticket:2750]
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Postgresql dialect to no longer inject a hardcoded ``::timestamp``
or similar cast into the given expression, as this interfered
with types such as timezone-aware datetimes, but also
does not appear to be at all necessary with modern versions
of psycopg2. Also in 0.8.2.
[ticket:2740]
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we log this now so it apparently happens a bunch
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INT64 has been fixed so that LONG is treated as INTEGER,
INT64 treated as BIGINT, unless the type has a "precision"
in which case it's treated as NUMERIC. Patch courtesy
Russell Stuart.
[ticket:2757]
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backslashed quotes would not be escaped correctly when
using the "non native" (i.e. non-psycopg2) means
of translating HSTORE data. Patch courtesy Ryan Kelly.
[ticket:2766]
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adapter to an aliased-mapped, non-polymorphic selectable that prevented us from referring
directly to that selectable.
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Conflicts:
doc/build/changelog/changelog_08.rst
doc/build/changelog/changelog_09.rst
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- add support for correlations to propagate all the way in; because
correlations require context now, need to make sure a select enclosure
of any level takes effect any number of levels deep.
- fix what we said correlate_except() was supposed to do when we first
released #2668 - "the FROM clause is left intact if the correlated SELECT
is not used in the context of an enclosing SELECT..." - it was not
considering the "existing_froms" collection at all, and prohibited
additional FROMs from being placed in an any() or has().
- add test for multilevel any()
- lots of docs, including glossary entries as we really need to define
"WHERE clause", "columns clause" etc. so that we can explain correlation better
- based on the insight that a SELECT can correlate anything that ultimately
came from an enclosing SELECT that links to this one via WHERE/columns/HAVING/ORDER BY,
have the compiler keep track of the FROM lists that correspond in this way,
link it to the asfrom flag, so that we send to _get_display_froms() the exact
list of candidate FROMs to correlate. no longer need any asfrom logic in the
Select() itself
- preserve 0.8.1's behavior for correlation when no correlate options are given, not
to mention 0.7 and prior's behavior of not propagating implicit correlation more than one level..
this is to reduce surprises/hard-to-debug situations when a user isn't trying
to correlate anything.
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Reflection of indexes must preserve the order of columns.
Fixes issue 2767.
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- simplify
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before checking if it is a subclass of `MutableComposite`
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