Psycopg2

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* Added simple pooling code (psycopg.pool module).

* Added DECIMAL typecaster to convert postgresql DECIMAL and NUMERIC
types (i.e, all types with an OID of NUMERICOID.) Note that the
DECIMAL typecaster does not set scale and precision on the created
objects but uses Python defaults.

* ZPsycopgDA back in and working using the new pooling code.

* Isn't that enough? :)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* added support for UNICODE queries.
* added UNICODE typecaster; to activate it just do::

psycopg.extensions.register_type(psycopg.extensions.UNICODE)

Note that the UNICODE typecaster override the STRING one, so it is
not activated by default.

* cursors now really support the iterator protocol.
* solved the rounding errors in time conversions.
* now cursors support .fileno() and .isready() methods, to be used in
select() calls.
* .copy_from() and .copy_in() methods are back in (still using the old
protocol, will be updated to use new one in next release.)
* fixed memory corruption bug reported on win32 platform.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* added support for tuple factories in cursor objects (removed factory
argument in favor of a .tuple_factory attribute on the cursor object);
see the new module psycopg.extras for a cursor (DictCursor) that
return rows as objects that support indexing both by position and
column name.
* added support for tzinfo objects in datetime.timestamp objects: the
PostgreSQL type "timestamp with time zone" is converted to
datetime.timestamp with a FixedOffsetTimezone initialized as necessary.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* sslmode parameter from 1.1.x
* various datetime conversion improvements.
* now psycopg should compile without mx or without native datetime
(not both, obviously.)
* included various win32/MSVC fixes (pthread.h changes, winsock2
library, include path in setup.py, etc.)
* ported interval fixes from 1.1.14/1.1.15.
* the last query executed by a cursor is now available in the
.query attribute.
* conversion of unicode strings to backend encoding now uses a table
(that still need to be filled.)
* cursors now have a .mogrify() method that return the query string
instead of executing it.
* connection objects now have a .dsn read-only attribute that holds the
connection string.
* moved psycopg C module to _psycopg and made psycopg a python module:
this allows for a neat separation of DBAPI-2.0 functionality and psycopg
extensions; the psycopg namespace will be also used to provide
python-only extensions (like the pooling code, some ZPsycopgDA support
functions and the like.)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* initial working support for unicode bound variables: UTF-8 and latin-1
backend encodings are natively supported (and the encoding.py example even
works!)
* added .set_client_encoding() method on the connection object.
* added examples: encoding.py, binary.py, lastrowid.py.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^

* better typecasting:

- DateTimeDelta used for postgresql TIME (merge from 1.1)
- BYTEA now is converted to a real buffer object, not to a string

* buffer objects are now adapted into Binary objects automatically.
* ported scroll method from 1.1 (DBAPI-2.0 extension for cursors)
* initial support for some DBAPI-2.0 extensions:

- .rownumber attribute for cursors
- .connection attribute for cursors
- .next() and .__iter__() methods to have cursors support the iterator
protocol
- all exception objects are exported to the connection object