Package org.apache.lucene.index
Class SortingLeafReader.SortingPostingsEnum
- java.lang.Object
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- org.apache.lucene.search.DocIdSetIterator
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- org.apache.lucene.index.PostingsEnum
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- org.apache.lucene.index.FilterLeafReader.FilterPostingsEnum
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- org.apache.lucene.index.SortingLeafReader.SortingPostingsEnum
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- Enclosing class:
- SortingLeafReader
static class SortingLeafReader.SortingPostingsEnum extends FilterLeafReader.FilterPostingsEnum
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
SortingLeafReader.SortingPostingsEnum.DocOffsetSorter
ATimSorter
which sorts two parallel arrays of doc IDs and offsets in one go.
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Field Summary
Fields Modifier and Type Field Description private int
currFreq
private int
docIt
private int[]
docs
private int
endOffset
private RAMFile
file
private int
maxDoc
private long[]
offsets
private BytesRef
payload
private int
pos
private IndexInput
postingInput
private SortingLeafReader.SortingPostingsEnum.DocOffsetSorter
sorter
private int
startOffset
private boolean
storeOffsets
private int
upto
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Fields inherited from class org.apache.lucene.index.FilterLeafReader.FilterPostingsEnum
in
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Fields inherited from class org.apache.lucene.index.PostingsEnum
ALL, FREQS, NONE, OFFSETS, PAYLOADS, POSITIONS
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Fields inherited from class org.apache.lucene.search.DocIdSetIterator
NO_MORE_DOCS
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Constructor Summary
Constructors Constructor Description SortingPostingsEnum(int maxDoc, SortingLeafReader.SortingPostingsEnum reuse, PostingsEnum in, Sorter.DocMap docMap, boolean storeOffsets)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description private void
addPositions(PostingsEnum in, IndexOutput out)
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.int
docID()
Returns the following:-1
ifDocIdSetIterator.nextDoc()
orDocIdSetIterator.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 withIndexOptions.DOCS
.BytesRef
getPayload()
Returns the payload at this position, or null if no payload was indexed.(package private) PostingsEnum
getWrapped()
Returns the wrappedPostingsEnum
.int
nextDoc()
Advances to the next document in the set and returns the doc it is currently on, orDocIdSetIterator.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.(package private) boolean
reused(PostingsEnum other)
int
startOffset()
Returns start offset for the current position, or -1 if offsets were not indexed.-
Methods inherited from class org.apache.lucene.index.FilterLeafReader.FilterPostingsEnum
cost
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Methods inherited from class org.apache.lucene.index.PostingsEnum
featureRequested
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Methods inherited from class org.apache.lucene.search.DocIdSetIterator
all, empty, range, slowAdvance
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Field Detail
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maxDoc
private final int maxDoc
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sorter
private final SortingLeafReader.SortingPostingsEnum.DocOffsetSorter sorter
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docs
private int[] docs
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offsets
private long[] offsets
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upto
private final int upto
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postingInput
private final IndexInput postingInput
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storeOffsets
private final boolean storeOffsets
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docIt
private int docIt
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pos
private int pos
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startOffset
private int startOffset
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endOffset
private int endOffset
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payload
private final BytesRef payload
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currFreq
private int currFreq
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file
private final RAMFile file
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Constructor Detail
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SortingPostingsEnum
SortingPostingsEnum(int maxDoc, SortingLeafReader.SortingPostingsEnum reuse, PostingsEnum in, Sorter.DocMap docMap, boolean storeOffsets) throws java.io.IOException
- Throws:
java.io.IOException
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Method Detail
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reused
boolean reused(PostingsEnum other)
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addPositions
private void addPositions(PostingsEnum in, IndexOutput out) throws java.io.IOException
- Throws:
java.io.IOException
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advance
public int advance(int target) throws java.io.IOException
Description copied from class:DocIdSetIterator
Advances to the first beyond the current whose document number is greater than or equal to target, and returns the document number itself. Exhausts the iterator and returnsDocIdSetIterator.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.- Overrides:
advance
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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docID
public int docID()
Description copied from class:DocIdSetIterator
Returns the following:-1
ifDocIdSetIterator.nextDoc()
orDocIdSetIterator.advance(int)
were not called yet.DocIdSetIterator.NO_MORE_DOCS
if the iterator has exhausted.- Otherwise it should return the doc ID it is currently on.
- Overrides:
docID
in classFilterLeafReader.FilterPostingsEnum
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endOffset
public int endOffset() throws java.io.IOException
Description copied from class:PostingsEnum
Returns end offset for the current position, or -1 if offsets were not indexed.- Overrides:
endOffset
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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freq
public int freq() throws java.io.IOException
Description copied from class:PostingsEnum
Returns term frequency in the current document, or 1 if the field was indexed withIndexOptions.DOCS
. Do not call this beforeDocIdSetIterator.nextDoc()
is first called, nor afterDocIdSetIterator.nextDoc()
returnsDocIdSetIterator.NO_MORE_DOCS
.NOTE: if the
PostingsEnum
was obtain withPostingsEnum.NONE
, the result of this method is undefined.- Overrides:
freq
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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getPayload
public BytesRef getPayload() throws java.io.IOException
Description copied from class:PostingsEnum
Returns the payload at this position, or null if no payload was indexed. You should not modify anything (neither members of the returned BytesRef nor bytes in the byte[]).- Overrides:
getPayload
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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nextDoc
public int nextDoc() throws java.io.IOException
Description copied from class:DocIdSetIterator
Advances to the next document in the set and returns the doc it is currently on, orDocIdSetIterator.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.- Overrides:
nextDoc
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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nextPosition
public int nextPosition() throws java.io.IOException
Description copied from class:PostingsEnum
Returns the next position, or -1 if positions were not indexed. Calling this more thanPostingsEnum.freq()
times is undefined.- Overrides:
nextPosition
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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startOffset
public int startOffset() throws java.io.IOException
Description copied from class:PostingsEnum
Returns start offset for the current position, or -1 if offsets were not indexed.- Overrides:
startOffset
in classFilterLeafReader.FilterPostingsEnum
- Throws:
java.io.IOException
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getWrapped
PostingsEnum getWrapped()
Returns the wrappedPostingsEnum
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