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com.tangosol.net.cache
Class AbstractKeyBundler

java.lang.Object
com.tangosol.util.Base
com.tangosol.net.cache.AbstractBundler
com.tangosol.net.cache.AbstractKeyBundler

Direct Known Subclasses:

BundlingNamedCache.GetBundler, BundlingNamedCache.RemoveBundler

public abstract class AbstractKeyBundler

extends AbstractBundler

An abstract key-based bundler serves as a base for NamedCache get() and remove() operation bundling as well as the CacheStore load() and erase() operation bundling.

Since:

Coherence 3.3

Author:

gg 2007.01.28

Nested Class Summary

protected class

AbstractKeyBundler.Bundle Bundle represents a unit of optimized execution.

Nested classes/interfaces inherited from class com.tangosol.net.cache.AbstractBundler

AbstractBundler.Statistics

Field Summary

Fields inherited from class com.tangosol.net.cache.AbstractBundler

ADJUSTMENT_FREQUENCY, m_countThreads, m_dPreviousSizeThreshold, m_listBundle

Constructor Summary

AbstractKeyBundler()

Method Summary

protected abstract java.util.Map	bundle(java.util.Collection colKeys) The bundle operation to be performed against a collected set of keys by the concrete AbstractKeyBundler implementations.
protected AbstractBundler.Bundle	instantiateBundle() Instantiate a new Bundle object.
protected java.lang.Object	process(java.lang.Object oKey) Process the specified key in a most optimal way according to the bundle settings.
protected java.util.Map	processAll(java.util.Collection colKeys) Process a colKeys of specified items in a most optimal way according to the bundle settings.
protected abstract java.lang.Object	unbundle(java.lang.Object oKey) Un-bundle bundled operation.

Methods inherited from class com.tangosol.net.cache.AbstractBundler

adjust, getDelayMillis, getOpenBundle, getSizeThreshold, getThreadThreshold, isAllowAutoAdjust, resetStatistics, setAllowAutoAdjust, setDelayMillis, setSizeThreshold, setThreadThreshold, toString, updateStatistics

Constructor Detail

AbstractKeyBundler

public AbstractKeyBundler()

Method Detail

process

protected java.lang.Object process(java.lang.Object oKey)

Process the specified key in a most optimal way according to the bundle settings.

Parameters:

oKey - the key to process

Returns:

an execution result according to the caller's contract

processAll

protected java.util.Map processAll(java.util.Collection colKeys)

Process a colKeys of specified items in a most optimal way according to the bundle settings.

Parameters:

colKeys - the collection of keys to process

Returns:

an execution result according to the caller's contract

bundle

protected abstract java.util.Map bundle(java.util.Collection colKeys)

The bundle operation to be performed against a collected set of keys by the concrete AbstractKeyBundler implementations. If an exception occurs during bundle operation, it could be repeated using singleton sets.

Parameters:

colKeys - a key collection to perform the bundled operation for

Returns:

the Map of operation results

unbundle

protected abstract java.lang.Object unbundle(java.lang.Object oKey)

Un-bundle bundled operation. This operation would be used if an exception occurs during a bundled operation or if the number of active threads is below the ThreadThreshold value.

Parameters:

oKey - a key to perform the un-bundled operation for

Returns:

the operation result for the specified key, may be null

instantiateBundle

protected AbstractBundler.Bundle instantiateBundle()

Instantiate a new Bundle object.

Specified by:

instantiateBundle in class AbstractBundler

Returns:

a new Bundle object

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