pydo.dbi

Package pydo :: Module dbi

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Module pydo.dbi

Classes
`ConnectionPool`	a connection pool for a single connection alias.
`ConnectionWrapper`	a connection object returned from a connection pool which wraps a real db connection.
`DBIBase`	base class for db connection wrappers.

Function Summary
	`delAlias(alias)` delete a connection alias if it has already been initialized; does nothing otherwise
	`getConnection(alias, create)` get a connection given a connection alias
	`initAlias(alias, driver, connectArgs, pool, verbose, init)` initializes a connection alias with the stated connection arguments.
	`_connect(driver, connectArgs, pool, verbose, initFunc)`
	`_get_driver_class(name)`
	`_real_connect(connfunc, connargs, initFunc)`

Variable Summary
`dict`	`_aliases` = `{}`
`lock`	`_connlock` = `<thread.lock object at 0xb7c3a0e0>`
`dict`	`_driverConfig` = `{'oracle': 'pydo.drivers.oracleconn.Orac...`
`dict`	`_loadedDrivers` = `{}`
`tuple`	`exception_names` = `('DataError', 'DatabaseError', 'Error'...`

Function Details

delAlias(alias)

delete a connection alias if it has already been initialized; does nothing otherwise

getConnection(alias, create=True)

get a connection given a connection alias

initAlias(alias, driver, connectArgs, pool=None, verbose=False, init=None)

initializes a connection alias with the stated connection arguments.

It can cause confusion to let this be called repeatedly; you might think you are initializing it one way and not realize it is being initialized elsewhere differently. Therefore, this raises a ValueError if the alias is already initialized with different data. Multiple initializations with the same data (such as happens when a module calling initAlias is reloaded) are permitted.

If you need to change the connect values at runtime, call delAlias before initAlias.

Variable Details

_aliases

Type:: dict
Value:: {}

_connlock

Type:: lock
Value:: <thread.lock object at 0xb7c3a0e0>

_driverConfig

Type:: dict
Value:: {'mssql': 'pydo.drivers.mssqlconn.MssqlDBI', 'mysql': 'pydo.drivers.mysqlconn.MysqlDBI', 'oracle': 'pydo.drivers.oracleconn.OracleDBI', 'psycopg': 'pydo.drivers.psycopgconn.PsycopgDBI', 'sqlite': 'pydo.drivers.sqliteconn.SqliteDBI'}

_loadedDrivers

Type:: dict
Value:: {}

exception_names

Type:: tuple
Value:: ('DataError', 'DatabaseError', 'Error', 'IntegrityError', 'InterfaceError', 'InternalError', 'NotSupportedError', 'OperationalError', ...

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