Package net.sf.ehcache.pool.impl

Class AbstractPool

java.lang.Object

net.sf.ehcache.pool.impl.AbstractPool

All Implemented Interfaces:

Pool

Direct Known Subclasses:

BoundedPool, StrictlyBoundedPool

public abstract class AbstractPool
extends java.lang.Object
implements Pool

An abstract pool implementation.

This contains all the logic of a pool except for the actual creation of accessor instances.

Author:

Chris Dennis, Alex Snaps

Constructor Summary

Constructors

Constructor	Description
AbstractPool(long maximumPoolSize, PoolEvictor evictor, SizeOfEngine defaultSizeOfEngine)	Create an AbstractPool instance

Method Summary

Modifier and Type	Method	Description
PoolAccessor	createPoolAccessor(PoolParticipant participant, int maxDepth, boolean abortWhenMaxDepthExceeded)	Return a PoolAccessor whose consumption is tracked by this pool, using a default SizeOf engine.
PoolEvictor	getEvictor()	Return the pool evictor used by this pool.
long	getMaxSize()	Return the maximum size of the pool.
java.util.Collection<PoolAccessor>	getPoolAccessors()	Return the participants accessing this pool.
long	getSize()	Return the used size of the pool.
void	registerPoolAccessor(PoolAccessor accessor)	Register an accessor implementation with this pool.
void	removePoolAccessor(PoolAccessor accessor)	Remove the supplied accessor from this pool.
void	setMaxSize(long newSize)	Change the maximum size of the pool.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.ehcache.pool.Pool

createPoolAccessor

Constructor Detail

AbstractPool

public AbstractPool(long maximumPoolSize,
                    PoolEvictor evictor,
                    SizeOfEngine defaultSizeOfEngine)

Create an AbstractPool instance

Parameters:

maximumPoolSize - the maximum size of the pool, in bytes.

evictor - the pool evictor, for cross-store eviction.

defaultSizeOfEngine - the default SizeOf engine used by the accessors.

Method Detail

getSize

public long getSize()

Return the used size of the pool.

Specified by:

getSize in interface Pool

Returns:

used size of the pool.

getMaxSize

public long getMaxSize()

Return the maximum size of the pool.

Specified by:

getMaxSize in interface Pool

Returns:

the maximum size of the pool.

setMaxSize

public void setMaxSize(long newSize)

Change the maximum size of the pool.

Specified by:

setMaxSize in interface Pool

Parameters:

newSize - the new pool size.

createPoolAccessor

public PoolAccessor createPoolAccessor(PoolParticipant participant,
                                       int maxDepth,
                                       boolean abortWhenMaxDepthExceeded)

Return a PoolAccessor whose consumption is tracked by this pool, using a default SizeOf engine.

Specified by:

createPoolAccessor in interface Pool

Parameters:

participant - the participant which will use the created accessor.

maxDepth - maximum depth of the object graph to traverse

abortWhenMaxDepthExceeded - true if the object traversal should be aborted when the max depth is exceeded

Returns:

a PoolAccessor whose consumption is tracked by this pool.

registerPoolAccessor

public void registerPoolAccessor(PoolAccessor accessor)

Register an accessor implementation with this pool.

Specified by:

registerPoolAccessor in interface Pool

Parameters:

accessor - accessor to be registered

removePoolAccessor

public void removePoolAccessor(PoolAccessor accessor)

Remove the supplied accessor from this pool.

Specified by:

removePoolAccessor in interface Pool

Parameters:

accessor - accessor to be removed

getPoolAccessors

public java.util.Collection<PoolAccessor> getPoolAccessors()

Return the participants accessing this pool.

Specified by:

getPoolAccessors in interface Pool

Returns:

participants using this pool

getEvictor

public PoolEvictor getEvictor()

Return the pool evictor used by this pool.

Specified by:

getEvictor in interface Pool

Returns:

the pool evictor