public static class FieldComparator.TermValComparator extends FieldComparator<BytesRef>
FieldComparator.ByteComparator, FieldComparator.DocComparator, FieldComparator.DoubleComparator, FieldComparator.FloatComparator, FieldComparator.IntComparator, FieldComparator.LongComparator, FieldComparator.NumericComparator<T extends Number>, FieldComparator.RelevanceComparator, FieldComparator.ShortComparator, FieldComparator.TermOrdValComparator, FieldComparator.TermValComparator
Constructor and Description |
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FieldComparator.TermValComparator(int numHits,
String field,
boolean sortMissingLast)
Sole constructor.
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Modifier and Type | Method and Description |
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int |
compare(int slot1,
int slot2)
Compare hit at slot1 with hit at slot2.
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int |
compareBottom(int doc)
Compare the bottom of the queue with this doc.
|
int |
compareTop(int doc)
Compare the top value with this doc.
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int |
compareValues(BytesRef val1,
BytesRef val2)
Returns -1 if first is less than second.
|
void |
copy(int slot,
int doc)
This method is called when a new hit is competitive.
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protected BinaryDocValues |
getBinaryDocValues(AtomicReaderContext context,
String field)
Retrieves the BinaryDocValues for the field in this segment
|
protected Bits |
getDocsWithField(AtomicReaderContext context,
String field)
Retrieves the set of documents that have a value in this segment
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protected boolean |
isNull(int doc,
BytesRef term)
Check whether the given value represents null.
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void |
setBottom(int bottom)
Set the bottom slot, ie the "weakest" (sorted last)
entry in the queue.
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FieldComparator<BytesRef> |
setNextReader(AtomicReaderContext context)
Set a new
AtomicReaderContext . |
void |
setTopValue(BytesRef value)
Record the top value, for future calls to
FieldComparator.compareTop(int) . |
BytesRef |
value(int slot)
Return the actual value in the slot.
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setScorer
public FieldComparator.TermValComparator(int numHits, String field, boolean sortMissingLast)
public int compare(int slot1, int slot2)
FieldComparator
compare
in class FieldComparator<BytesRef>
slot1
- first slot to compareslot2
- second slot to comparepublic int compareBottom(int doc)
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<BytesRef>
doc
- that was hitpublic void copy(int slot, int doc)
FieldComparator
copy
in class FieldComparator<BytesRef>
slot
- which slot to copy the hit todoc
- docID relative to current readerprotected BinaryDocValues getBinaryDocValues(AtomicReaderContext context, String field) throws IOException
IOException
protected Bits getDocsWithField(AtomicReaderContext context, String field) throws IOException
IOException
protected boolean isNull(int doc, BytesRef term)
BinaryDocValues
returned by getBinaryDocValues(org.apache.lucene.index.AtomicReaderContext, java.lang.String)
use a special value as a sentinel. The default implementation checks
getDocsWithField(org.apache.lucene.index.AtomicReaderContext, java.lang.String)
.
NOTE: The null value can only be an EMPTY BytesRef
.
public FieldComparator<BytesRef> setNextReader(AtomicReaderContext context) throws IOException
FieldComparator
AtomicReaderContext
. All subsequent docIDs are relative to
the current reader (you must add docBase if you need to
map it to a top-level docID).setNextReader
in class FieldComparator<BytesRef>
context
- current reader contextIOException
- if there is a low-level IO errorpublic 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<BytesRef>
bottom
- the currently weakest (sorted last) slot in the queuepublic void setTopValue(BytesRef value)
FieldComparator
FieldComparator.compareTop(int)
. This is only called for searches that
use searchAfter (deep paging), and is called before any
calls to FieldComparator.setNextReader(org.apache.lucene.index.AtomicReaderContext)
.setTopValue
in class FieldComparator<BytesRef>
public BytesRef value(int slot)
FieldComparator
value
in class FieldComparator<BytesRef>
slot
- the valuepublic int compareValues(BytesRef val1, BytesRef val2)
FieldComparator
compareValues
in class FieldComparator<BytesRef>
public int compareTop(int doc)
FieldComparator
FieldComparator.compare(int,int)
} as if topValue were slot1 and the new
document were slot 2. This is only called for searches that
use searchAfter (deep paging).compareTop
in class FieldComparator<BytesRef>
doc
- that was hitCopyright © 2000-2014 Apache Software Foundation. All Rights Reserved.