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Š„[Jc @ sp d Z d d k Z d d k Z d d k Z d d k l Z l Z d d k l Z d d k l Z l
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d „ Z d e f d „ ƒ YZ d
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e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d e f d „ ƒ YZ d S( s{ Connection pooling for DB-API connections.
Provides a number of connection pool implementations for a variety of
usage scenarios and thread behavior requirements imposed by the
application, DB-API or database itself.
Also provides a DB-API 2.0 connection proxying mechanism allowing
regular DB-API connect() methods to be transparently managed by a
SQLAlchemy connection pool.
iÿÿÿÿN( t exct log( t queue( t threadingt picklet as_interfacec K s< y t | SWn) t j
o t i | t | | ƒ SXd S( sD Return a proxy for a DB-API module that automatically pools connections.
Given a DB-API 2.0 module and pool management parameters, returns
a proxy for the module that will automatically pool connections,
creating new connection pools for each distinct set of connection
arguments sent to the decorated module's connect() function.
:param module: a DB-API 2.0 database module
:param poolclass: the class used by the pool module to provide
pooling. Defaults to :class:`QueuePool`.
:param \*\*params: will be passed through to *poolclass*
N( t proxiest KeyErrort
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Wt i ƒ d S( sY Remove all current DB-API 2.0 managers.
All pools and connections are disposed.
N( R t valuest closet clear( t manager( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt clear_managers0 s
t Poolc B s’ e Z d Z d d e e d d „ Z d „ Z d „ Z d „ Z d „ Z
d „ Z d „ Z d „ Z
d
„ Z d „ Z d „ Z d
„ Z d „ Z RS( s) Abstract base class for connection pools.iÿÿÿÿc C s¥ t i | d | ƒ| _ t i ƒ | _ | | _ | | _ | | _ | | _ | | _
g | _ g | _ g | _
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Construct a Pool.
:param creator: a callable function that returns a DB-API
connection object. The function will be called with
parameters.
:param recycle: If set to non -1, number of seconds between
connection recycling, which means upon checkout, if this
timeout is surpassed the connection will be closed and
replaced with a newly opened connection. Defaults to -1.
:param echo: If True, connections being pulled and retrieved
from the pool will be logged to the standard output, as well
as pool sizing information. Echoing can also be achieved by
enabling logging for the "sqlalchemy.pool"
namespace. Defaults to False.
:param use_threadlocal: If set to True, repeated calls to
:meth:`connect` within the same application thread will be
guaranteed to return the same connection object, if one has
already been retrieved from the pool and has not been
returned yet. Offers a slight performance advantage at the
cost of individual transactions by default. The
:meth:`unique_connection` method is provided to bypass the
threadlocal behavior installed into :meth:`connect`.
:param reset_on_return: If true, reset the database state of
connections returned to the pool. This is typically a
ROLLBACK to release locks and transaction resources.
Disable at your own peril. Defaults to True.
:param listeners: A list of
:class:`~sqlalchemy.interfaces.PoolListener`-like objects or
dictionaries of callables that receive events when DB-API
connections are created, checked out and checked in to the
pool.
t echoflagN( R t instance_loggert loggerR t localt _threadconnst _creatort _recyclet _use_threadlocalt _reset_on_returnt echot listenerst _on_connectt _on_checkoutt _on_checkint add_listener( t selft creatort recycleR t use_threadlocalt reset_on_returnR t l( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt __init__= s ) c C s t | ƒ i ƒ S( N( t _ConnectionFairyt checkout( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt unique_connectionv s c C s
t | ƒ S( N( t _ConnectionRecord( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt create_connectiony s c C s
t ƒ ‚ d S( s8 Return a new instance with identical creation arguments.N( t NotImplementedError( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt recreate| s c C s
t ƒ ‚ d S( s Dispose of this pool.
This method leaves the possibility of checked-out connections
remaining open, It is advised to not reuse the pool once dispose()
is called, and to instead use a new pool constructed by the
recreate() method.
N( R. ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt dispose s c C s | i p t | ƒ i ƒ Sy% | i i ƒ } | o | i ƒ SWn t j
o n Xt | ƒ } t i | ƒ | i _ | i ƒ S( N( R R) R* R t currentt AttributeErrort weakreft ref( R" t rect agent( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt connectŒ s
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t ƒ ‚ d S( N( R. ( R" t conn( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR9 ¦ s c C s
t ƒ ‚ d S( N( R. ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt status© s c C s’ t | d d ƒ} | i i | ƒ t | d ƒ o | i i | ƒ n t | d ƒ o | i i | ƒ n t | d ƒ o | i i | ƒ n d S( s Add a ``PoolListener``-like object to this pool.
``listener`` may be an object that implements some or all of
PoolListener, or a dictionary of callables containing implementations
of some or all of the named methods in PoolListener.
t methodsR7 R* t checkinN( s connects checkouts checkin( R R t appendR8 R R R ( R" t listener( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR! ¬ s c C s | i i | ƒ d S( N( R t info( R" t msg( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR À s N( t __name__t
__module__t __doc__t Nonet Falset TrueR( R+ R- R/ R0 R7 R; R= R< R9 R? R! R ( ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR : s 8 R, c B sA e Z d „ Z d „ Z d d „ Z d „ Z d „ Z d „ Z RS( c C sZ | | _ | i ƒ | _ h | _ | i o+ x( | i D] } | i | i | ƒ q5 Wn d S( N( t _ConnectionRecord__poolt _ConnectionRecord__connectt
connectionRD R R7 ( R" t poolR' ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR( Ä s
c C sž | i d j oŠ | i i o | i i d | i ƒ n y | i i ƒ Wqš t t f j
o
‚ qš | i i o | i i d | i ƒ q– qš Xn d S( Ns Closing connection %rs Exception closing connection %r( RN RI RL t _should_log_infoR R t
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c C sv | i i oR | d j o* | i i d | i | i i | f ƒ q_ | i i d | i ƒ n | i ƒ d | _ d S( Ns( Invalidate connection %r (reason: %s:%s)s Invalidate connection %r( RL RP RI R RN t __class__RF t _ConnectionRecord__close( R" t e( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt
invalidateÙ s
c C s2 | i d j o[ | i ƒ | _ | i i ƒ | i i o. x+ | i i D] } | i | i | ƒ qF Wq+nÁ | i i d j o t i ƒ | i
| i i j o | i i o | i i d | i ƒ n | i
ƒ | i ƒ | _ | i i ƒ | i i o. x+ | i i D] } | i | i | ƒ qWq+n | i S( Niÿÿÿÿs) Connection %r exceeded timeout; recycling( RN RI RM RD R RL R R7 R t timet starttimeRP R RT ( R" R' ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt get_connectionã s&
3
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oT } | i i o! | i i d | i | f ƒ n t | t t f ƒ o ‚ qœ n Xd S( Ns Closing connection %rs) Connection %r threw an error on close: %s( RL RP R RN R t Exceptiont
isinstanceRQ RR ( R" RU ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt __closeö s
c C s yK t i ƒ | _ | i i ƒ } | i i o | i i d | ƒ n | SWn= t j
o1 } | i i o | i i d | ƒ n ‚ n Xd S( Ns Created new connection %rs Error on connect(): %s( RW RX RL R RP R RZ ( R" RN RU ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt __connect s
N( RF RG R( R RI RV RY RT RM ( ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR, Ã s
c C s< | d j o | i | j o d S| d j o‘ y7 | i o | i ƒ n | d j o | i ƒ n WqÀ t j
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| | ƒ q Wn | i | ƒ n d S( NRU s$ Connection %r being returned to pool( RI t backrefR t rollbackR RZ RV R[ RQ RR RP R R RA R; ( RN t connection_recordRO R4 RU R' ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt _finalize_fairy s,
R) c B sŒ e Z d Z d Z d „ Z e d „ ƒ Z e d „ ƒ Z e d
„ ƒ Z d d „ Z
d „ Z d
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d „ Z d „ Z d „ Z RS( sG Proxies a DB-API connection and provides return-on-dereference support.t _poolt __counterRN t _connection_recordt __weakref__t _detached_infoc s± ˆ | _ d | _ yT ˆ i ƒ ‰ | _ | i i ƒ ‰ | _ t i | ‡ ‡ ‡ f d † ƒ | i _ Wn d | _ d | _ ‚ n X| i i
o | i i d | i ƒ n d S( Ni c s t ˆ ˆ ˆ | ƒ S( ( Ra ( R4 ( R5 RO R> ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt 2 s s# Connection %r checked out from pool( Rb t _ConnectionFairy__counterR= Rd RY RN R3 R4 R^ RI RP R ( R" RO ( ( RO R5 R> s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR( , s +
c C s
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oY | i d j o t i d ƒ ‚ n y | i SWqv t j
o h | _ } | SXn Xd S( s4 An info collection unique to this DB-API connection.s This connection is closedN( Rd RD R2 RN RI R t InvalidRequestErrorRf ( R" t value( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyRD C s
c C sa | i d j o t i d ƒ ‚ n | i d j o | i i d | ƒ n d | _ | i ƒ d S( s· Mark this connection as invalidated.
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ConnectionRecord will create a new connection when next used.
s This connection is closedRU N( RN RI R Rk Rd RV t _close( R" RU ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyRV R s c O sU y& | i i | | Ž } t | | ƒ SWn( t j
o } | i d | ƒ ‚ n Xd S( NRU ( RN t cursort _CursorFairyRZ RV ( R" t argst kwargst cRU ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyRn ` s c C s t | i | ƒ S( N( t getattrRN ( R" t key( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt __getattr__h s c C sR | i d j o t i d ƒ ‚ n | i d 7_ | i i p | i d j o | Sd } x¶ | d j o¨ y8 x- | i i D] } | i | i | i | ƒ q{ W| SWq^ t i j
oZ } | i i
o | i i d | ƒ n | i i | ƒ | i i
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c C sa | i d j oM d | i _ d | i _ | i i | i ƒ | i i i ƒ | _ d | _ n d S( s" Separate this connection from its Pool.
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pool when closed, and will instead be literally closed. The
containing ConnectionRecord is separated from the DB-API connection,
and will create a new connection when next used.
Note that any overall connection limiting constraints imposed by a
Pool implementation may be violated after a detach, as the detached
connection is removed from the pool's knowledge and control.
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connections _connection_records __weakref__s _detached_infoN( RF RG RH t __slots__R( t propertyRi Rj RD RI RV Rn Ru R* Ry R Rm ( ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR) ' s Ro c B s5 e Z d Z d „ Z d d „ Z d „ Z d „ Z RS( t __parentRn t executec C s" | | _ | | _ | i | _ d S( N( t _CursorFairy__parentRn R} ( R" t parentRn ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR( © s c C s | i i d | ƒ d S( NRU ( R~ RV ( R" RU ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyRV ® s c C s“ y | i i ƒ Wn{ t j
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t SingletonThreadPoolc B sY e Z d Z d d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z
RS(
s A Pool that maintains one connection per thread.
Maintains one connection per each thread, never moving a connection to a
thread other than the one which it was created in.
This is used for SQLite, which both does not handle multithreading by
default, and also requires a singleton connection if a :memory: database
is being used.
Options are the same as those of :class:`Pool`, as well as:
:param pool_size: The number of threads in which to maintain connections
at once. Defaults to five.
i c K sE t | d ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR0 â s
c C sC t | i d ƒ o, | i i ƒ } | i i | ƒ | i ` n d S( NR1 ( R8 R† R1 Rˆ t discard( R" R> ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt
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c C s d t | ƒ t | i ƒ f S( Ns" SingletonThreadPool id:%d size: %d( t idRŽ Rˆ ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR? ý s c C s d S( N( ( R" R> ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR9 s c C s‘ y | i i ƒ } | o | SWn t j
o n X| i ƒ } t i | ƒ | i _ | i i | ƒ t | i ƒ | i j o | i
ƒ n | S( N( R† R1 R2 R- R3 R4 Rˆ t addRŽ R‰ R ( R" Rr ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR< s ( RF RG RH R( R/ R0 RŒ R R? R9 R< ( ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR… Á s t QueuePoolc B sq e Z d Z d d d d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d
„ Z d „ Z
d „ Z d
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i c K sn t i | | | t i | ƒ | _ d | | _ | | _ | | _ | i d j o
t i ƒ p d | _
d S( sÝ
Construct a QueuePool.
:param creator: a callable function that returns a DB-API
connection object. The function will be called with
parameters.
:param pool_size: The size of the pool to be maintained. This
is the largest number of connections that will be kept
persistently in the pool. Note that the pool begins with no
connections; once this number of connections is requested,
that number of connections will remain. Defaults to 5.
:param max_overflow: The maximum overflow size of the
pool. When the number of checked-out connections reaches the
size set in pool_size, additional connections will be
returned up to this limit. When those additional connections
are returned to the pool, they are disconnected and
discarded. It follows then that the total number of
simultaneous connections the pool will allow is pool_size +
`max_overflow`, and the total number of "sleeping"
connections the pool will allow is pool_size. `max_overflow`
can be set to -1 to indicate no overflow limit; no limit
will be placed on the total number of concurrent
connections. Defaults to 10.
:param timeout: The number of seconds to wait before giving up
on returning a connection. Defaults to 30.
:param recycle: If set to non -1, number of seconds between
connection recycling, which means upon checkout, if this
timeout is surpassed the connection will be closed and
replaced with a newly opened connection. Defaults to -1.
:param echo: If True, connections being pulled and retrieved
from the pool will be logged to the standard output, as well
as pool sizing information. Echoing can also be achieved by
enabling logging for the "sqlalchemy.pool"
namespace. Defaults to False.
:param use_threadlocal: If set to True, repeated calls to
:meth:`connect` within the same application thread will be
guaranteed to return the same connection object, if one has
already been retrieved from the pool and has not been
returned yet. Offers a slight performance advantage at the
cost of individual transactions by default. The
:meth:`unique_connection` method is provided to bypass the
threadlocal behavior installed into :meth:`connect`.
:param reset_on_return: If true, reset the database state of
connections returned to the pool. This is typically a
ROLLBACK to release locks and transaction resources.
Disable at your own peril. Defaults to True.
:param listeners: A list of
:class:`~sqlalchemy.interfaces.PoolListener`-like objects or
dictionaries of callables that receive events when DB-API
connections are created, checked out and checked in to the
pool.
i iÿÿÿÿN( R R( t QueueRb t _overflowt
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ƒ | i ƒ | i f ƒ ‚ n | i d j o | i i ƒ n | i d j o? | i | i j o, | i d j o | i i ƒ n | i ƒ Sz | i ƒ } | i d 7_ Wd | i d j o | i i ƒ n X| SXd S( NiÿÿÿÿsP QueuePool limit of size %d overflow %d reached, connection timed out, timeout %di ( R• R” Rb R= R– R“ t EmptyR< R t TimeoutErrorR‰ t overflowR˜ RI Rž RŸ R- ( R" t waitt con( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR< k s( "# /# c C s… xF t o> y | i i t ƒ } | i ƒ Wq t i j
o Pq Xq Wd | i ƒ | _ | i o | i
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checkedout( R" t tup( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR? ’ s *c C s
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| i i ƒ S( N( Rb t qsize( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR¥ ™ s c C s | i S( N( R” ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR¢ œ s c C s | i i | i i ƒ | i S( N( Rb R› R¨ R” ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR¦ Ÿ s (
RF RG RH R( R/ R9 R< R0 R? R‰ R¥ R¢ R¦ ( ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR’ s F
t NullPoolc B sD e Z d Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z RS( sQ A Pool which does not pool connections.
Instead it literally opens and closes the underlying DB-API connection
per each connection open/close.
Reconnect-related functions such as ``recycle`` and connection
invalidation are not supported by this Pool implementation, since
no connections are held persistently.
c C s d S( NR© ( ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR? ® s c C s | i ƒ d S( N( R ( R" R> ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR9 ± s c C s d S( N( ( R" R> ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyt do_return_invalid´ s c C s
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C s> | i d ƒ t | i d | i d | i d | i d | i ƒS( Ns Pool recreatingR$ R R% R ( R R© R R RP R R ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR/ º s
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StaticPoolc B sV e Z d Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z
RS( s. A Pool of exactly one connection, used for all requests.
Reconnect-related functions such as ``recycle`` and connection
invalidation (which is also used to support auto-reconnect) are not
currently supported by this Pool implementation but may be implemented
in a future release.
c K s2 t i | | | | ƒ | _ t | ƒ | _ d S( sö
Construct a StaticPool.
:param creator: a callable function that returns a DB-API
connection object. The function will be called with
parameters.
:param echo: If True, connections being pulled and retrieved
from the pool will be logged to the standard output, as well
as pool sizing information. Echoing can also be achieved by
enabling logging for the "sqlalchemy.pool"
namespace. Defaults to False.
:param reset_on_return: If true, reset the database state of
connections returned to the pool. This is typically a
ROLLBACK to release locks and transaction resources.
Disable at your own peril. Defaults to True.
:param listeners: A list of
:class:`~sqlalchemy.interfaces.PoolListener`-like objects or
dictionaries of callables that receive events when DB-API
connections are created, checked out and checked in to the
pool.
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AssertionPoolc B sD e Z d Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z RS( sö A Pool that allows at most one checked out connection at any given time.
This will raise an exception if more than one connection is checked out
at a time. Useful for debugging code that is using more connections
than desired.
c K s2 t i | | | t | ƒ | _ | i | _ d S( s
Construct an AssertionPool.
:param creator: a callable function that returns a DB-API
connection object. The function will be called with
parameters.
:param recycle: If set to non -1, number of seconds between
connection recycling, which means upon checkout, if this
timeout is surpassed the connection will be closed and
replaced with a newly opened connection. Defaults to -1.
:param echo: If True, connections being pulled and retrieved
from the pool will be logged to the standard output, as well
as pool sizing information. Echoing can also be achieved by
enabling logging for the "sqlalchemy.pool"
namespace. Defaults to False.
:param use_threadlocal: If set to True, repeated calls to
:meth:`connect` within the same application thread will be
guaranteed to return the same connection object, if one has
already been retrieved from the pool and has not been
returned yet. Offers a slight performance advantage at the
cost of individual transactions by default. The
:meth:`unique_connection` method is provided to bypass the
threadlocal behavior installed into :meth:`connect`.
:param reset_on_return: If true, reset the database state of
connections returned to the pool. This is typically a
ROLLBACK to release locks and transaction resources.
Disable at your own peril. Defaults to True.
:param listeners: A list of
:class:`~sqlalchemy.interfaces.PoolListener`-like objects or
dictionaries of callables that receive events when DB-API
connections are created, checked out and checked in to the
pool.
N( R R( R, RN R† ( R" R# R ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR( s (c C s d S( NR¬ ( ( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR? C s c C s t d ƒ ‚ d S( Nt Invalid( t AssertionError( R" ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR- F s c C s4 | | i j o | i d j p t ‚ | | _ d S( N( R† RN RI R® ( R" R> ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR9 I s 'c C s t d ƒ ‚ d S( NR ( R® ( R" R> ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyRª M s c C s- | i d j p t ‚ | i } d | _ | S( N( RN RI R® ( R" Rr ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR< P s ( RF RG RH R( R? R- R9 Rª R< ( ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR¬ s , R c B sY e Z d Z e d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z d „ Z
d „ Z RS( s Layers connection pooling behavior on top of a standard DB-API module.
Proxies a DB-API 2.0 connect() call to a connection pool keyed to the
specific connect parameters. Other functions and attributes are delegated
to the underlying DB-API module.
c K s7 | | _ | | _ | | _ h | _ t i ƒ | _ d S( s× Initializes a new proxy.
module
a DB-API 2.0 module
poolclass
a Pool class, defaulting to QueuePool
Other parameters are sent to the Pool object's constructor.
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c O s | i | | Ž i ƒ S( s+ Activate a connection to the database.
Connect to the database using this DBProxy's module and the given
connect arguments. If the arguments match an existing pool, the
connection will be returned from the pool's current thread-local
connection instance, or if there is no thread-local connection
instance it will be checked out from the set of pooled connections.
If the pool has no available connections and allows new connections
to be created, a new database connection will be made.
( Rµ R7 ( R" Rp R ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR7 Š s
c O s: | i | | Ž } y | i | =Wn t j
o n Xd S( sF Dispose the connection pool referenced by the given connect arguments.N( R´ R° R ( R" Rp R Rt ( ( s3 /usr/lib/python2.6/site-packages/sqlalchemy/pool.pyR0 ™ s
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