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Java Source Code / Java Documentation » Web Crawler » heritrix » org.archive.crawler.frontier 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.archive.crawler.frontier.AdaptiveRevisitAttributeConstants

All known Subclasses:   org.archive.crawler.frontier.AdaptiveRevisitFrontier,  org.archive.crawler.filter.HTTPMidFetchUnchangedFilter,  org.archive.crawler.postprocessor.WaitEvaluator,  org.archive.crawler.frontier.AdaptiveRevisitHostQueue,  org.archive.crawler.extractor.ChangeEvaluator,  org.archive.crawler.frontier.AdaptiveRevisitHostQueueTest,
AdaptiveRevisitAttributeConstants
public interface AdaptiveRevisitAttributeConstants extends CoreAttributeConstants(Code)
Defines static constants for the Adaptive Revisiting module defining data keys in the CrawlURI AList.
author:
   Kristinn Sigurdsson
See Also:   org.archive.crawler.datamodel.CoreAttributeConstants


Field Summary
final public static  StringA_CONTENT_STATE_KEY
     Key to use getting state of crawluri from the CrawlURI alist.
final public static  StringA_FETCH_OVERDUE
    
final public static  StringA_LAST_CONTENT_DIGEST
     Designates a field in the CrawlURIs AList for the content digest of an earlier visit.
final public static  StringA_LAST_DATESTAMP
    
final public static  StringA_LAST_ETAG
    
final public static  StringA_NUMBER_OF_VERSIONS
    
final public static  StringA_NUMBER_OF_VISITS
    
final public static  StringA_TIME_OF_NEXT_PROCESSING
    
final public static  StringA_WAIT_INTERVAL
    
final public static  StringA_WAIT_REEVALUATED
    
final public static  intCONTENT_CHANGED
     URI content had changed between the two latest, successfully completed fetches.
final public static  intCONTENT_UNCHANGED
     URI content has not changed between the two latest, successfully completed fetches.
final public static  intCONTENT_UNKNOWN
     No knowledge of URI content.



Field Detail
A_CONTENT_STATE_KEY
final public static String A_CONTENT_STATE_KEY(Code)
Key to use getting state of crawluri from the CrawlURI alist.


A_FETCH_OVERDUE
final public static String A_FETCH_OVERDUE(Code)


A_LAST_CONTENT_DIGEST
final public static String A_LAST_CONTENT_DIGEST(Code)
Designates a field in the CrawlURIs AList for the content digest of an earlier visit.


A_LAST_DATESTAMP
final public static String A_LAST_DATESTAMP(Code)


A_LAST_ETAG
final public static String A_LAST_ETAG(Code)


A_NUMBER_OF_VERSIONS
final public static String A_NUMBER_OF_VERSIONS(Code)


A_NUMBER_OF_VISITS
final public static String A_NUMBER_OF_VISITS(Code)


A_TIME_OF_NEXT_PROCESSING
final public static String A_TIME_OF_NEXT_PROCESSING(Code)


A_WAIT_INTERVAL
final public static String A_WAIT_INTERVAL(Code)


A_WAIT_REEVALUATED
final public static String A_WAIT_REEVALUATED(Code)


CONTENT_CHANGED
final public static int CONTENT_CHANGED(Code)
URI content had changed between the two latest, successfully completed fetches. By definition, content has changed if there has only been one successful fetch made.


CONTENT_UNCHANGED
final public static int CONTENT_UNCHANGED(Code)
URI content has not changed between the two latest, successfully completed fetches.


CONTENT_UNKNOWN
final public static int CONTENT_UNKNOWN(Code)
No knowledge of URI content. Possibly not fetched yet, unable to check if different or an error occured on last fetch attempt.




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