public class ScoringFilters extends Configured implements ScoringFilter
ScoringFilter implementing plugins.X_POINT_ID| Constructor and Description |
|---|
ScoringFilters(Configuration conf) |
| Modifier and Type | Method and Description |
|---|---|
CrawlDatum |
distributeScoreToOutlinks(Text fromUrl,
ParseData parseData,
Collection<Map.Entry<Text,CrawlDatum>> targets,
CrawlDatum adjust,
int allCount)
Distribute score value from the current page to all its outlinked pages.
|
float |
generatorSortValue(Text url,
CrawlDatum datum,
float initSort)
Calculate a sort value for Generate.
|
float |
indexerScore(Text url,
NutchDocument doc,
CrawlDatum dbDatum,
CrawlDatum fetchDatum,
Parse parse,
Inlinks inlinks,
float initScore)
This method calculates a indexed document score/boost.
|
void |
initialScore(Text url,
CrawlDatum datum)
Calculate a new initial score, used when adding newly discovered pages.
|
void |
injectedScore(Text url,
CrawlDatum datum)
Calculate a new initial score, used when injecting new pages.
|
void |
orphanedScore(Text url,
CrawlDatum datum)
Calculate orphaned page score during CrawlDb.update().
|
void |
passScoreAfterParsing(Text url,
Content content,
Parse parse)
Currently a part of score distribution is performed using only data coming
from the parsing process.
|
void |
passScoreBeforeParsing(Text url,
CrawlDatum datum,
Content content)
This method takes all relevant score information from the current datum
(coming from a generated fetchlist) and stores it into
Content metadata. |
void |
updateDbScore(Text url,
CrawlDatum old,
CrawlDatum datum,
List<CrawlDatum> inlinked)
Calculate updated page score during CrawlDb.update().
|
getConf, setConfclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitgetConf, setConfpublic ScoringFilters(Configuration conf)
public float generatorSortValue(Text url, CrawlDatum datum, float initSort) throws ScoringFilterException
generatorSortValue in interface ScoringFilterurl - url of the pagedatum - page's datum, should not be modifiedinitSort - initial sort value, or a value from previous filters in chainScoringFilterExceptionpublic void initialScore(Text url, CrawlDatum datum) throws ScoringFilterException
initialScore in interface ScoringFilterurl - url of the pagedatum - new datum. Filters will modify it in-place.ScoringFilterExceptionpublic void injectedScore(Text url, CrawlDatum datum) throws ScoringFilterException
injectedScore in interface ScoringFilterurl - url of the pagedatum - new datum. Filters will modify it in-place.ScoringFilterExceptionpublic void updateDbScore(Text url, CrawlDatum old, CrawlDatum datum, List<CrawlDatum> inlinked) throws ScoringFilterException
updateDbScore in interface ScoringFilterurl - url of the pageold - original datum, with original score. May be null if this is a
newly discovered page. If not null, filters should use score
values from this parameter as the starting values - the
datum parameter may contain values that are no longer
valid, if other updates occurred between generation and this
update.datum - the new datum, with the original score saved at the time when
fetchlist was generated. Filters should update this in-place, and
it will be saved in the crawldb.inlinked - (partial) list of CrawlDatum-s (with their scores) from links
pointing to this page, found in the current update batch.ScoringFilterExceptionpublic void orphanedScore(Text url, CrawlDatum datum) throws ScoringFilterException
orphanedScore in interface ScoringFilterurl - URL of the pagedatum - CrawlDatum for pageScoringFilterExceptionpublic void passScoreBeforeParsing(Text url, CrawlDatum datum, Content content) throws ScoringFilterException
ScoringFilterContent metadata. This is needed in order
to pass this value(s) to the mechanism that distributes it to outlinked
pages.passScoreBeforeParsing in interface ScoringFilterurl - url of the pagedatum - source datum. NOTE: modifications to this value are not persisted.content - instance of content. Implementations may modify this in-place,
primarily by setting some metadata properties.ScoringFilterExceptionpublic void passScoreAfterParsing(Text url, Content content, Parse parse) throws ScoringFilterException
ScoringFilterpassScoreAfterParsing in interface ScoringFilterurl - page urlcontent - original content. NOTE: modifications to this value are not
persisted.parse - target instance to copy the score information to. Implementations
may modify this in-place, primarily by setting some metadata
properties.ScoringFilterExceptionpublic CrawlDatum distributeScoreToOutlinks(Text fromUrl, ParseData parseData, Collection<Map.Entry<Text,CrawlDatum>> targets, CrawlDatum adjust, int allCount) throws ScoringFilterException
ScoringFilterdistributeScoreToOutlinks in interface ScoringFilterfromUrl - url of the source pageparseData - ParseData instance, which stores relevant score value(s) in its
metadata. NOTE: filters may modify this in-place, all changes will
be persisted.targets - <url, CrawlDatum> pairs. NOTE: filters can modify this
in-place, all changes will be persisted.adjust - a CrawlDatum instance, initially null, which implementations may
use to pass adjustment values to the original CrawlDatum. When
creating this instance, set its status to
CrawlDatum.STATUS_LINKED.allCount - number of all collected outlinks from the source pageCrawlDatum.STATUS_LINKED, which contains
adjustments to be applied to the original CrawlDatum score(s) and
metadata. This can be null if not needed.ScoringFilterExceptionpublic float indexerScore(Text url, NutchDocument doc, CrawlDatum dbDatum, CrawlDatum fetchDatum, Parse parse, Inlinks inlinks, float initScore) throws ScoringFilterException
ScoringFilterindexerScore in interface ScoringFilterurl - url of the pagedoc - indexed document. NOTE: this already contains all information
collected by indexing filters. Implementations may modify this
instance, in order to store/remove some information.dbDatum - current page from CrawlDb. NOTE:
fetchDatum - datum from FetcherOutput (containing among others the fetching
status)parse - parsing result. NOTE: changes made to this instance are not
persisted.inlinks - current inlinks from LinkDb. NOTE: changes made to this instance
are not persisted.initScore - initial boost value for the indexed document.ScoringFilterExceptionCopyright © 2021 The Apache Software Foundation