com.crawljax.core

Class CandidateElementManager

java.lang.Object

com.crawljax.core.CandidateElementManager

All Implemented Interfaces:

ExtractorManager

public class CandidateElementManager
extends Object
implements ExtractorManager

The class is a ExtractorManager for the CandidateElements. It basically implements the ExtractorManager.

Constructor Summary

Constructors

Constructor and Description
CandidateElementManager(EventableConditionChecker eventableConditionChecker, ConditionTypeChecker<CrawlCondition> crawlConditionChecker) Create a new CandidateElementManager.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	checkCrawlCondition(EmbeddedBrowser browser) Check if one or more CrawlConditions matches the current state in the browser.
EventableConditionChecker	getEventableConditionChecker() Retrieve the eventable condition checker.
void	increaseElementsCounter() increase the number of checked elements, as a statistics measure to know how many elements were actually examined.
boolean	isChecked(String element) Check if a given element is already checked, preventing duplicate work.
boolean	markChecked(CandidateElement element) Mark a given element as checked to prevent duplicate work.
int	numberOfExaminedElements() Return internal counter for the examined elements.

Methods inherited from class java.lang.Object

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

Constructor Detail

CandidateElementManager

@Inject
public CandidateElementManager(EventableConditionChecker eventableConditionChecker,
                              ConditionTypeChecker<CrawlCondition> crawlConditionChecker)

Create a new CandidateElementManager.

Parameters:

eventableConditionChecker - the EventableConditionChecker to use

crawlConditionChecker - the CrawlConditionChecker to use

Method Detail

increaseElementsCounter

public void increaseElementsCounter()

increase the number of checked elements, as a statistics measure to know how many elements were actually examined. Its thread safe by using the AtomicInteger

Specified by:

increaseElementsCounter in interface ExtractorManager

See Also:

AtomicInteger

isChecked

public boolean isChecked(String element)

Check if a given element is already checked, preventing duplicate work. This is implemented in a ConcurrentLinkedQueue to support thread-safety

Specified by:

isChecked in interface ExtractorManager

Parameters:

element - the to search for if its already checked

Returns:

true if the element is already checked

markChecked

public boolean markChecked(CandidateElement element)

Mark a given element as checked to prevent duplicate work. A elements is only added when it is not already in the set of checked elements.

Specified by:

markChecked in interface ExtractorManager

Parameters:

element - the element that is checked

Returns:

true if !contains(element.uniqueString)

numberOfExaminedElements

public int numberOfExaminedElements()

Return internal counter for the examined elements.

Specified by:

numberOfExaminedElements in interface ExtractorManager

Returns:

the number of EximinedElements

getEventableConditionChecker

public EventableConditionChecker getEventableConditionChecker()

Description copied from interface: ExtractorManager

Retrieve the eventable condition checker.

Specified by:

getEventableConditionChecker in interface ExtractorManager

Returns:

the eventableConditionChecker

checkCrawlCondition

public boolean checkCrawlCondition(EmbeddedBrowser browser)

Check if one or more CrawlConditions matches the current state in the browser.

Specified by:

checkCrawlCondition in interface ExtractorManager

Parameters:

browser - the browser to execute in the CrawlConditions.

Returns:

true if one or more CrawlConditions stratifies or non is specified.