org.apache.commons.pool
public interface PoolableObjectFactory
ObjectPool
.
By contract, when an ObjectPool
delegates to a PoolableObjectFactory,
makeObject
is called whenever a new instance is needed.
activateObject
is invoked on every instance before it is returned from the
pool.
passivateObject
is invoked on every instance when it is returned to the
pool.
destroyObject
is invoked on every instance when it is being "dropped" from the
pool (whether due to the response from
validateObject
, or
for reasons specific to the pool implementation.)
validateObject
is invoked in an implementation-specific fashion to determine if an instance
is still valid to be returned by the pool.
It will only be invoked on an "activated"
instance.
Version: $Revision: 155430 $ $Date: 2005-02-26 08:13:28 -0500 (Sat, 26 Feb 2005) $
Method Summary | |
---|---|
void | activateObject(Object obj)
Reinitialize an instance to be returned by the pool. |
void | destroyObject(Object obj)
Destroys an instance no longer needed by the pool. |
Object | makeObject()
Creates an instance that can be returned by the pool. |
void | passivateObject(Object obj)
Uninitialize an instance to be returned to the pool. |
boolean | validateObject(Object obj)
Ensures that the instance is safe to be returned by the pool.
|
Parameters: obj the instance to be activated
Parameters: obj the instance to be destroyed
Returns: an instance that can be returned by the pool.
Parameters: obj the instance to be passivated
Parameters: obj the instance to be validated
Returns: false if this obj is not valid and should be dropped from the pool, true otherwise.