public static final class FieldComparator.RelevanceComparator extends FieldComparator
TopScoreDocCollector
directly (which IndexSearcher.search(org.apache.lucene.search.Weight, org.apache.lucene.search.Filter, int)
uses when no Sort
is
specified).FieldComparator.ByteComparator, FieldComparator.DocComparator, FieldComparator.DoubleComparator, FieldComparator.FloatComparator, FieldComparator.IntComparator, FieldComparator.LongComparator, FieldComparator.RelevanceComparator, FieldComparator.ShortComparator, FieldComparator.StringComparatorLocale, FieldComparator.StringOrdValComparator, FieldComparator.StringValComparator
Modifier and Type | Method and Description |
---|---|
int |
compare(int slot1,
int slot2)
Compare hit at slot1 with hit at slot2.
|
int |
compareBottom(int doc)
Compare the bottom of the queue with doc.
|
void |
copy(int slot,
int doc)
This method is called when a new hit is competitive.
|
void |
setBottom(int bottom)
Set the bottom slot, ie the "weakest" (sorted last)
entry in the queue.
|
void |
setNextReader(IndexReader reader,
int docBase)
Set a new Reader.
|
void |
setScorer(Scorer scorer)
Sets the Scorer to use in case a document's score is
needed.
|
java.lang.Comparable |
value(int slot)
Return the actual value in the slot.
|
binarySearch, binarySearch
public int compare(int slot1, int slot2)
FieldComparator
compare
in class FieldComparator
slot1
- first slot to compareslot2
- second slot to comparepublic int compareBottom(int doc) throws java.io.IOException
FieldComparator
FieldComparator.compare(int,int)
} as if bottom were slot1 and the new
document were slot 2.
For a search that hits many results, this method will be the hotspot (invoked by far the most frequently).
compareBottom
in class FieldComparator
doc
- that was hitjava.io.IOException
public void copy(int slot, int doc) throws java.io.IOException
FieldComparator
copy
in class FieldComparator
slot
- which slot to copy the hit todoc
- docID relative to current readerjava.io.IOException
public void setNextReader(IndexReader reader, int docBase)
FieldComparator
setNextReader
in class FieldComparator
reader
- current readerdocBase
- docBase of this readerpublic void setBottom(int bottom)
FieldComparator
FieldComparator.compareBottom(int)
is
called, you should compare against this slot. This
will always be called before FieldComparator.compareBottom(int)
.setBottom
in class FieldComparator
bottom
- the currently weakest (sorted last) slot in the queuepublic void setScorer(Scorer scorer)
FieldComparator
setScorer
in class FieldComparator
scorer
- Scorer instance that you should use to
obtain the current hit's score, if necessary.public java.lang.Comparable value(int slot)
FieldComparator
value
in class FieldComparator
slot
- the valueCopyright © 2000-2019 Apache Software Foundation. All Rights Reserved.