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"""Support for the Drizzle database via the Drizzle-python adapter.
Drizzle-Python is available at:
http://sourceforge.net/projects/mysql-python
At least version 1.2.1 or 1.2.2 should be used.
Connecting
-----------
Connect string format::
drizzle+mysqldb://<user>:<password>@<host>[:<port>]/<dbname>
Character Sets
--------------
Drizzle is all utf8 all the time.
Known Issues
-------------
Drizzle-python at least as of version 1.2.2 has a serious memory leak related
to unicode conversion, a feature which is disabled via ``use_unicode=0``.
The recommended connection form with SQLAlchemy is::
engine = create_engine('mysql://scott:tiger@localhost/test?charset=utf8&use_unicode=0', pool_recycle=3600)
"""
from sqlalchemy.dialects.drizzle.base import (DrizzleDialect,
DrizzleExecutionContext,
DrizzleCompiler, DrizzleIdentifierPreparer)
from sqlalchemy.connectors.mysqldb import (
MySQLDBExecutionContext,
MySQLDBCompiler,
MySQLDBIdentifierPreparer,
MySQLDBConnector
)
class DrizzleExecutionContext_mysqldb(
MySQLDBExecutionContext,
DrizzleExecutionContext):
pass
class DrizzleCompiler_mysqldb(MySQLDBCompiler, DrizzleCompiler):
pass
class DrizzleIdentifierPreparer_mysqldb(
MySQLDBIdentifierPreparer,
DrizzleIdentifierPreparer):
pass
class DrizzleDialect_mysqldb(MySQLDBConnector, DrizzleDialect):
execution_ctx_cls = DrizzleExecutionContext_mysqldb
statement_compiler = DrizzleCompiler_mysqldb
preparer = DrizzleIdentifierPreparer_mysqldb
def _detect_charset(self, connection):
"""Sniff out the character set in use for connection results."""
return 'utf8'
dialect = DrizzleDialect_mysqldb
|
