org.archive.crawler.frontier.precedence

Class BaseQueuePrecedencePolicy

java.lang.Object

org.archive.crawler.frontier.precedence.QueuePrecedencePolicy

org.archive.crawler.frontier.precedence.BaseQueuePrecedencePolicy

All Implemented Interfaces:

Serializable, HasKeyedProperties

Direct Known Subclasses:

HighestUriQueuePrecedencePolicy, SuccessCountsQueuePrecedencePolicy

public class BaseQueuePrecedencePolicy
extends QueuePrecedencePolicy
implements HasKeyedProperties

QueuePrecedencePolicy that sets a uri-queue's precedence to a configured single value. This value may vary for some queues (as in override settings sheets) or be changed by an operator mid-crawl (subject to limits on when such changes are noted in a uri-queues lifecycle).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected KeyedProperties	kp

Constructor Summary

Constructors

Constructor and Description
BaseQueuePrecedencePolicy()

Method Summary

Methods

Modifier and Type	Method and Description
protected int	calculatePrecedence(WorkQueue wq) Calculate the precedence value for the given queue.
int	getBasePrecedence()
KeyedProperties	getKeyedProperties()
protected void	installProvider(WorkQueue wq) Install the appropriate provider helper object into the WorkQueue, if necessary.
void	queueCreated(WorkQueue wq) Set an appropriate initial precedence value on the given newly-created WorkQueue.
void	queueReevaluate(WorkQueue wq) Update an appropriate initial precedence value on the given already-existing WorkQueue.
void	setBasePrecedence(int precedence)

Methods inherited from class java.lang.Object

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

Field Detail

kp

protected KeyedProperties kp

Constructor Detail

BaseQueuePrecedencePolicy

public BaseQueuePrecedencePolicy()

Method Detail

getKeyedProperties

public KeyedProperties getKeyedProperties()

Specified by:

getKeyedProperties in interface HasKeyedProperties

getBasePrecedence

public int getBasePrecedence()

setBasePrecedence

public void setBasePrecedence(int precedence)

queueCreated

public void queueCreated(WorkQueue wq)

Description copied from class: QueuePrecedencePolicy

Set an appropriate initial precedence value on the given newly-created WorkQueue.

Specified by:

queueCreated in class QueuePrecedencePolicy

Parameters:

wq - WorkQueue to modify

installProvider

protected void installProvider(WorkQueue wq)

Install the appropriate provider helper object into the WorkQueue, if necessary.

Parameters:

wq - target WorkQueue this policy will operate on

calculatePrecedence

protected int calculatePrecedence(WorkQueue wq)

Calculate the precedence value for the given queue.

Parameters:

wq - WorkQueue

Returns:

int precedence value

queueReevaluate

public void queueReevaluate(WorkQueue wq)

Description copied from class: QueuePrecedencePolicy

Update an appropriate initial precedence value on the given already-existing WorkQueue.

Specified by:

queueReevaluate in class QueuePrecedencePolicy

Parameters:

wq - WorkQueue to modify