com.atlassian.jira.issue.statistics.util
Class TwoDimensionalTermHitCollector

java.lang.Object
  org.apache.lucene.search.Collector
      com.atlassian.jira.issue.statistics.util.TwoDimensionalTermHitCollector

public class TwoDimensionalTermHitCollector
extends org.apache.lucene.search.Collector

A HitCollector that creates a doc -> term mapping. This is useful for collecting documents where there are a limited number of terms. The caching also ensures that if multiple searches sort on the same terms, the doc -> term mapping is maintained.

This HitCollector can be quite memory intensive, however the cache is stored with a weak reference, so it will be garbage collected.

Since:

v3.11

Constructor Summary

TwoDimensionalTermHitCollector(TwoDimensionalStatsMap statsMap, org.apache.lucene.index.IndexReader indexReader, FieldVisibilityManager fieldVisibilityManager, ReaderCache readerCache)

TwoDimensionalTermHitCollector(TwoDimensionalStatsMap statsMap, org.apache.lucene.index.IndexReader indexReader, FieldVisibilityManager fieldVisibilityManager, ReaderCache readerCache, LuceneFieldSorter aggregateField)
Update a statsMap, using the values from the aggregateField.

Method Summary

boolean	acceptsDocsOutOfOrder()
void	collect(int i)
void	setNextReader(org.apache.lucene.index.IndexReader reader, int docBase)
void	setScorer(org.apache.lucene.search.Scorer scorer)

Methods inherited from class java.lang.Object

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

Constructor Detail

TwoDimensionalTermHitCollector

public TwoDimensionalTermHitCollector(TwoDimensionalStatsMap statsMap,
                                      org.apache.lucene.index.IndexReader indexReader,
                                      FieldVisibilityManager fieldVisibilityManager,
                                      ReaderCache readerCache)

TwoDimensionalTermHitCollector

public TwoDimensionalTermHitCollector(TwoDimensionalStatsMap statsMap,
                                      org.apache.lucene.index.IndexReader indexReader,
                                      FieldVisibilityManager fieldVisibilityManager,
                                      ReaderCache readerCache,
                                      LuceneFieldSorter aggregateField)

Update a statsMap, using the values from the aggregateField. Example, you can sum the votes.

Parameters:

statsMap - stats map

indexReader - index reader

fieldVisibilityManager - used to determine if the stat fields are visible

readerCache - used to cache stats values at the reader level

aggregateField - lucene field sorter

Method Detail

collect

public void collect(int i)

Specified by:

collect in class org.apache.lucene.search.Collector

setScorer

public void setScorer(org.apache.lucene.search.Scorer scorer)
               throws IOException

Specified by:

setScorer in class org.apache.lucene.search.Collector

Throws:

IOException

setNextReader

public void setNextReader(org.apache.lucene.index.IndexReader reader,
                          int docBase)
                   throws IOException

Specified by:

setNextReader in class org.apache.lucene.search.Collector

Throws:

IOException

acceptsDocsOutOfOrder

public boolean acceptsDocsOutOfOrder()

Specified by:

acceptsDocsOutOfOrder in class org.apache.lucene.search.Collector