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com.tangosol.net.cache
Class AbstractBundler.Bundle

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

Direct Known Subclasses:

AbstractBinaryEntryBundler.Bundle, AbstractEntryBundler.Bundle, AbstractKeyBundler.Bundle

Enclosing class:

AbstractBundler

protected abstract class AbstractBundler.Bundle

extends Base

Bundle represents a unit of optimized execution.

Field Summary

static int	STATUS_EXCEPTION Attempt to bundle encountered and exception; the execution has to be de-optimized and performed by individual threads.
static int	STATUS_OPEN This Bundle accepting additional items.
static int	STATUS_PENDING This Bundle is closed for accepting additional items and awaiting for the execution results.
static int	STATUS_PROCESSED This Bundle is in process of returning the result of execution back to the client.

Constructor Summary

protected

AbstractBundler.Bundle() Default constructor.

Method Summary

protected abstract void	ensureResults() Obtain results of the bundled requests.
protected boolean	ensureResults(boolean fBurst) Obtain results of the bundled requests or ensure that the results have already been retrieved.
protected java.lang.String	formatStatusName(int iStatus) Return a human readable name for the specified status value.
protected int	getBundleSize() Obtain this bundle size.
protected boolean	isException() Check whether or not this bundle is in the "exception" state - bundled execution threw an exception and requests have to be un-bundled.
protected boolean	isMaster() Check whether or not this is a "master" Bundle.
protected boolean	isOpen() Check whether or not this bundle is open for adding request elements.
protected boolean	isPending() Check whether or not this bundle is in the "pending" state - awaiting for the execution results.
protected boolean	isProcessed() Check whether or not this bundle is in the "processed" state - ready to return the result of execution back to the client.
protected boolean	releaseThread() Release all bundle resources associated with the current thread.
void	resetStatistics() Reset statistics for this Bundle.
protected void	setMaster() Designate this Bundle as a "master" bundle.
protected void	setStatus(int iStatus) Change the status of this Bundle.
java.lang.String	toString() Provide a human readable description for the Bundle object (for debugging).
protected boolean	waitForResults(boolean fFirst) Wait until results of bundled requests are retrieved.

Field Detail

STATUS_OPEN

public static final int STATUS_OPEN

This Bundle accepting additional items.

See Also:

Constant Field Values

STATUS_PENDING

public static final int STATUS_PENDING

This Bundle is closed for accepting additional items and awaiting for the execution results.

See Also:

Constant Field Values

STATUS_PROCESSED

public static final int STATUS_PROCESSED

This Bundle is in process of returning the result of execution back to the client.

See Also:

Constant Field Values

STATUS_EXCEPTION

public static final int STATUS_EXCEPTION

Attempt to bundle encountered and exception; the execution has to be de-optimized and performed by individual threads.

See Also:

Constant Field Values

Constructor Detail

AbstractBundler.Bundle

protected AbstractBundler.Bundle()

Default constructor.

Method Detail

isOpen

protected boolean isOpen()

Check whether or not this bundle is open for adding request elements.

Returns:

true iff this Bundle is still open

isPending

protected boolean isPending()

Check whether or not this bundle is in the "pending" state - awaiting for the execution results.

Returns:

true iff this Bundle is in the "pending" state

isProcessed

protected boolean isProcessed()

Check whether or not this bundle is in the "processed" state - ready to return the result of execution back to the client.

Returns:

true iff this Bundle is in the "processed" state

isException

protected boolean isException()

Check whether or not this bundle is in the "exception" state - bundled execution threw an exception and requests have to be un-bundled.

Returns:

true iff this Bundle is in the "exception" state

setStatus

protected void setStatus(int iStatus)

Change the status of this Bundle.

Parameters:

iStatus - the new status value

getBundleSize

protected int getBundleSize()

Obtain this bundle size. The return value should be expressed in the same units as the value returned by the getSizeThreshold method.

Returns:

the bundle size

isMaster

protected boolean isMaster()

Check whether or not this is a "master" Bundle.

Returns:

true iff this Bundle is a designated "master" Bundle

setMaster

protected void setMaster()

Designate this Bundle as a "master" bundle.

ensureResults

protected abstract void ensureResults()

Obtain results of the bundled requests. This method should be implemented by concrete Bundle implementations using the most efficient mechanism.

waitForResults

protected boolean waitForResults(boolean fFirst)

Wait until results of bundled requests are retrieved.

Note that calls to this method must be externally synchronized.

Parameters:

fFirst - true iff this is the first thread entering the bundle

Returns:

true if this thread is supposed to perform an actual bundled operation (burst); false otherwise

ensureResults

protected boolean ensureResults(boolean fBurst)

Obtain results of the bundled requests or ensure that the results have already been retrieved.

Parameters:

fBurst - specifies whether or not the actual results have to be fetched on this thread; this parameter will be true for one and only one thread per bundle

Returns:

true if the bundling has succeeded; false if the un-bundling has to be performed as a result of a failure

releaseThread

protected boolean releaseThread()

Release all bundle resources associated with the current thread.

Returns:

true iff all entered threads have released

resetStatistics

public void resetStatistics()

Reset statistics for this Bundle.

toString

public java.lang.String toString()

Provide a human readable description for the Bundle object (for debugging).

Returns:

a human readable description for the Bundle object

formatStatusName

protected java.lang.String formatStatusName(int iStatus)

Return a human readable name for the specified status value.

Parameters:

iStatus - the status value to format

Returns:

a human readable status name

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