org.archive.modules.deciderules.recrawl

Class IdenticalDigestDecideRule

java.lang.Object

org.archive.modules.deciderules.DecideRule

org.archive.modules.deciderules.PredicatedDecideRule

org.archive.modules.deciderules.recrawl.IdenticalDigestDecideRule

All Implemented Interfaces:

Serializable, HasKeyedProperties

public class IdenticalDigestDecideRule
extends PredicatedDecideRule

Rule applies configured decision to any CrawlURIs whose prior-history content-digest matches the latest fetch.

Author:

gojomo

See Also:

Serialized Form

Field Summary

Fields inherited from class org.archive.modules.deciderules.DecideRule

comment, kp

Constructor Summary

Constructors

Constructor and Description
IdenticalDigestDecideRule() Usual constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	evaluate(CrawlURI curi) Evaluate whether given CrawlURI's content-digest exactly matches that of preceding fetch.
static boolean	hasIdenticalDigest(CrawlURI curi) Utility method for testing if a CrawlURI's last two history entries (one being the most recent fetch) have identical content-digest information.

Methods inherited from class org.archive.modules.deciderules.PredicatedDecideRule

getDecision, innerDecide, setDecision

Methods inherited from class org.archive.modules.deciderules.DecideRule

accepts, decisionFor, getComment, getEnabled, getKeyedProperties, onlyDecision, setComment, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

IdenticalDigestDecideRule

public IdenticalDigestDecideRule()

Usual constructor.

Method Detail

evaluate

protected boolean evaluate(CrawlURI curi)

Evaluate whether given CrawlURI's content-digest exactly matches that of preceding fetch.

Specified by:

evaluate in class PredicatedDecideRule

Parameters:

object - should be CrawlURI

Returns:

true if current-fetch content-digest matches previous

hasIdenticalDigest

public static boolean hasIdenticalDigest(CrawlURI curi)

Utility method for testing if a CrawlURI's last two history entries (one being the most recent fetch) have identical content-digest information.

Parameters:

curi - CrawlURI to test

Returns:

true if last two history entries have identical digests, otherwise false