final class Lucene50PostingsReader.BlockImpactsPostingsEnum extends ImpactsEnum
| Modifier and Type | Field and Description |
|---|---|
private int |
accum |
private int |
doc |
private int |
docBufferUpto |
private int[] |
docDeltaBuffer |
private int |
docFreq |
(package private) IndexInput |
docIn |
private long |
docTermStartFP |
private int |
docUpto |
private byte[] |
encoded |
private int |
freq |
private int[] |
freqBuffer |
(package private) boolean |
indexHasOffsets |
(package private) boolean |
indexHasPayloads |
private long |
lastPosBlockFP |
private int |
nextSkipDoc |
private long |
payTermStartFP |
private int |
posBufferUpto |
private int[] |
posDeltaBuffer |
(package private) IndexInput |
posIn |
private int |
position |
private int |
posPendingCount |
private long |
posPendingFP |
private long |
posTermStartFP |
private long |
seekTo |
private Lucene50ScoreSkipReader |
skipper |
private long |
totalTermFreq |
ALL, FREQS, NONE, OFFSETS, PAYLOADS, POSITIONSNO_MORE_DOCS| Constructor and Description |
|---|
BlockImpactsPostingsEnum(FieldInfo fieldInfo,
Lucene50PostingsFormat.IntBlockTermState termState) |
| Modifier and Type | Method and Description |
|---|---|
int |
advance(int target)
Advances to the first beyond the current whose document number is greater
than or equal to target, and returns the document number itself.
|
void |
advanceShallow(int target)
Shallow-advance to
target. |
long |
cost()
Returns the estimated cost of this
DocIdSetIterator. |
int |
docID()
Returns the following:
-1 if DocIdSetIterator.nextDoc() or
DocIdSetIterator.advance(int) were not called yet. |
int |
endOffset()
Returns end offset for the current position, or -1 if
offsets were not indexed.
|
int |
freq()
Returns term frequency in the current document, or 1 if the field was
indexed with
IndexOptions.DOCS. |
Impacts |
getImpacts()
Get information about upcoming impacts for doc ids that are greater than
or equal to the maximum of
DocIdSetIterator.docID() and the last
target that was passed to ImpactsSource.advanceShallow(int). |
BytesRef |
getPayload()
Returns the payload at this position, or null if no
payload was indexed.
|
int |
nextDoc()
Advances to the next document in the set and returns the doc it is
currently on, or
DocIdSetIterator.NO_MORE_DOCS if there are no more docs in the
set.NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior. |
int |
nextPosition()
Returns the next position, or -1 if positions were not indexed.
|
private void |
refillDocs() |
private void |
refillPositions() |
private void |
skipPositions() |
int |
startOffset()
Returns start offset for the current position, or -1
if offsets were not indexed.
|
featureRequestedall, empty, range, slowAdvanceprivate final byte[] encoded
private final int[] docDeltaBuffer
private final int[] freqBuffer
private final int[] posDeltaBuffer
private int docBufferUpto
private int posBufferUpto
private final Lucene50ScoreSkipReader skipper
final IndexInput docIn
final IndexInput posIn
final boolean indexHasOffsets
final boolean indexHasPayloads
private int docFreq
private long totalTermFreq
private int docUpto
private int doc
private int accum
private int freq
private int position
private int posPendingCount
private long posPendingFP
private long docTermStartFP
private long posTermStartFP
private long payTermStartFP
private long lastPosBlockFP
private int nextSkipDoc
private long seekTo
public BlockImpactsPostingsEnum(FieldInfo fieldInfo, Lucene50PostingsFormat.IntBlockTermState termState) throws java.io.IOException
java.io.IOExceptionpublic int freq()
throws java.io.IOException
PostingsEnumIndexOptions.DOCS. Do not call this before
DocIdSetIterator.nextDoc() is first called, nor after DocIdSetIterator.nextDoc() returns
DocIdSetIterator.NO_MORE_DOCS.
NOTE: if the PostingsEnum was obtain with PostingsEnum.NONE,
the result of this method is undefined.
freq in class PostingsEnumjava.io.IOExceptionpublic int docID()
DocIdSetIterator-1 if DocIdSetIterator.nextDoc() or
DocIdSetIterator.advance(int) were not called yet.
DocIdSetIterator.NO_MORE_DOCS if the iterator has exhausted.
docID in class DocIdSetIteratorprivate void refillDocs()
throws java.io.IOException
java.io.IOExceptionprivate void refillPositions()
throws java.io.IOException
java.io.IOExceptionpublic void advanceShallow(int target)
throws java.io.IOException
ImpactsSourcetarget. This is cheaper than calling
DocIdSetIterator.advance(int) and allows further calls to
ImpactsSource.getImpacts() to ignore doc IDs that are less than target
in order to get more precise information about impacts.
This method may not be called on targets that are less than the current
DocIdSetIterator.docID().
After this method has been called, DocIdSetIterator.nextDoc() may
not be called if the current doc ID is less than target - 1 and
DocIdSetIterator.advance(int) may not be called on targets that
are less than target.java.io.IOExceptionpublic Impacts getImpacts() throws java.io.IOException
ImpactsSourceDocIdSetIterator.docID() and the last
target that was passed to ImpactsSource.advanceShallow(int).
This method may not be called on an unpositioned iterator on which
ImpactsSource.advanceShallow(int) has never been called.
NOTE: advancing this iterator may invalidate the returned impacts, so they
should not be used after the iterator has been advanced.java.io.IOExceptionpublic int nextDoc()
throws java.io.IOException
DocIdSetIteratorDocIdSetIterator.NO_MORE_DOCS if there are no more docs in the
set.nextDoc in class DocIdSetIteratorjava.io.IOExceptionpublic int advance(int target)
throws java.io.IOException
DocIdSetIteratorDocIdSetIterator.NO_MORE_DOCS if target
is greater than the highest document number in the set.
The behavior of this method is undefined when called with
target ≤ current, or after the iterator has exhausted.
Both cases may result in unpredicted behavior.
When target > current it behaves as if written:
int advance(int target) {
int doc;
while ((doc = nextDoc()) < target) {
}
return doc;
}
Some implementations are considerably more efficient than that.
NOTE: this method may be called with DocIdSetIterator.NO_MORE_DOCS for
efficiency by some Scorers. If your implementation cannot efficiently
determine that it should exhaust, it is recommended that you check for that
value in each call to this method.
advance in class DocIdSetIteratorjava.io.IOExceptionprivate void skipPositions()
throws java.io.IOException
java.io.IOExceptionpublic int nextPosition()
throws java.io.IOException
PostingsEnumPostingsEnum.freq() times is undefined.nextPosition in class PostingsEnumjava.io.IOExceptionpublic int startOffset()
PostingsEnumstartOffset in class PostingsEnumpublic int endOffset()
PostingsEnumendOffset in class PostingsEnumpublic BytesRef getPayload()
PostingsEnumgetPayload in class PostingsEnumpublic long cost()
DocIdSetIteratorDocIdSetIterator.
This is generally an upper bound of the number of documents this iterator might match, but may be a rough heuristic, hardcoded value, or otherwise completely inaccurate.
cost in class DocIdSetIterator