Java Doc for LinksScoper.java in  » Web-Crawler » heritrix » org » archive » crawler » postprocessor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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


org.archive.crawler.framework.Scoper
   org.archive.crawler.postprocessor.LinksScoper

LinksScoper
public class LinksScoper extends Scoper implements FetchStatusCodes(Code)
Determine which extracted links are within scope. TODO: To test scope, requires that Link be converted to a CandidateURI. Make it so don't have to make a CandidateURI to test if Link is in scope.

Since this scoper has to create CandidateURIs, no sense discarding them since later in the processing chain CandidateURIs rather than Links are whats needed scheduling extracted links w/ the Frontier (Frontier#schedule expects CandidateURI, not Link). This class replaces Links w/ the CandidateURI that wraps the Link in the CrawlURI.
author:
   gojomo
author:
   stack



Field Summary
final public static  StringATTR_PREFERENCE_DEPTH_HOPS
    
final public static  StringATTR_REJECTLOG_DECIDE_RULES
    

Constructor Summary
public  LinksScoper(String name)
    

Method Summary
protected  DecideRulegetRejectLogRules(Object o)
    
protected  intgetSchedulingFor(CrawlURI curi, Link wref, int preferenceDepthHops)
     Determine scheduling for the curi. As with the LinksScoper in general, this only handles extracted links, seeds do not pass through here, but are given MEDIUM priority.
protected  voidhandlePrerequisite(CrawlURI curi)
     The CrawlURI has a prerequisite; apply scoping and update Link to CandidateURI in manner analogous to outlink handling.
protected  voidinnerProcess(CrawlURI curi)
    
protected  voidoutOfScope(CandidateURI caUri)
    

Field Detail
ATTR_PREFERENCE_DEPTH_HOPS
final public static String ATTR_PREFERENCE_DEPTH_HOPS(Code)



ATTR_REJECTLOG_DECIDE_RULES
final public static String ATTR_REJECTLOG_DECIDE_RULES(Code)




Constructor Detail
LinksScoper
public LinksScoper(String name)(Code)

Parameters:
  name - Name of this filter.




Method Detail
getRejectLogRules
protected DecideRule getRejectLogRules(Object o)(Code)



getSchedulingFor
protected int getSchedulingFor(CrawlURI curi, Link wref, int preferenceDepthHops)(Code)
Determine scheduling for the curi. As with the LinksScoper in general, this only handles extracted links, seeds do not pass through here, but are given MEDIUM priority. Imports into the frontier similarly do not pass through here, but are given NORMAL priority.



handlePrerequisite
protected void handlePrerequisite(CrawlURI curi)(Code)
The CrawlURI has a prerequisite; apply scoping and update Link to CandidateURI in manner analogous to outlink handling.
Parameters:
  curi - CrawlURI with prereq to consider



innerProcess
protected void innerProcess(CrawlURI curi)(Code)



outOfScope
protected void outOfScope(CandidateURI caUri)(Code)



Fields inherited from org.archive.crawler.framework.Scoper
final protected static String ATTR_OVERRIDE_LOGGER_ENABLED(Code)(Java Doc)

Methods inherited from org.archive.crawler.framework.Scoper
protected void initialTasks()(Code)(Java Doc)
protected boolean isInScope(CandidateURI caUri)(Code)(Java Doc)
protected boolean isOverrideLogger(Object context)(Code)(Java Doc)
protected void outOfScope(CandidateURI caUri)(Code)(Java Doc)

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