org.datanucleus.store.rdbms.datasource.dbcp.pool

Class BasePoolableObjectFactory

java.lang.Object

org.datanucleus.store.rdbms.datasource.dbcp.pool.BasePoolableObjectFactory

All Implemented Interfaces:

PoolableObjectFactory

public abstract class BasePoolableObjectFactory
extends Object
implements PoolableObjectFactory

A base implementation of PoolableObjectFactory.

All operations defined here are essentially no-op's.

Since:

Pool 1.0

Version:

$Revision: 965336 $ $Date: 2010-07-18 20:58:33 -0400 (Sun, 18 Jul 2010) $

Author:

Rodney Waldhoff

See Also:

PoolableObjectFactory, BaseKeyedPoolableObjectFactory

Constructor Summary

Constructors

Constructor and Description
BasePoolableObjectFactory()

Method Summary

Modifier and Type	Method and Description
void	activateObject(Object obj) No-op.
void	destroyObject(Object obj) No-op.
abstract Object	makeObject() Creates an instance that can be served by the pool.
void	passivateObject(Object obj) No-op.
boolean	validateObject(Object obj) This implementation always returns true.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BasePoolableObjectFactory

public BasePoolableObjectFactory()

Method Detail

makeObject

public abstract Object makeObject()
                           throws Exception

Creates an instance that can be served by the pool. Instances returned from this method should be in the same state as if they had been activated. They will not be activated before being served by the pool.

Specified by:

makeObject in interface PoolableObjectFactory

Returns:

an instance that can be served by the pool.

Throws:

Exception - if there is a problem creating a new instance, this will be propagated to the code requesting an object.

destroyObject

public void destroyObject(Object obj)
                   throws Exception

No-op.

Specified by:

destroyObject in interface PoolableObjectFactory

Parameters:

obj - ignored

Throws:

Exception - should be avoided as it may be swallowed by the pool implementation.

See Also:

PoolableObjectFactory.validateObject(java.lang.Object), ObjectPool.invalidateObject(java.lang.Object)

validateObject

public boolean validateObject(Object obj)

This implementation always returns true.

Specified by:

validateObject in interface PoolableObjectFactory

Parameters:

obj - ignored

Returns:

true

activateObject

public void activateObject(Object obj)
                    throws Exception

No-op.

Specified by:

activateObject in interface PoolableObjectFactory

Parameters:

obj - ignored

Throws:

Exception - if there is a problem activating obj, this exception may be swallowed by the pool.

See Also:

PoolableObjectFactory.destroyObject(java.lang.Object)

passivateObject

public void passivateObject(Object obj)
                     throws Exception

No-op.

Specified by:

passivateObject in interface PoolableObjectFactory

Parameters:

obj - ignored

Throws:

Exception - if there is a problem passivating obj, this exception may be swallowed by the pool.

See Also:

PoolableObjectFactory.destroyObject(java.lang.Object)