Package org.apache.lucene.queries.spans
Class NearSpansUnordered
- java.lang.Object
-
- org.apache.lucene.search.DocIdSetIterator
-
- org.apache.lucene.queries.spans.Spans
-
- org.apache.lucene.queries.spans.ConjunctionSpans
-
- org.apache.lucene.queries.spans.NearSpansUnordered
-
public class NearSpansUnordered extends ConjunctionSpans
Similar toNearSpansOrdered
, but for the unordered case.Expert: Only public for subclassing. Most implementations should not need this class
-
-
Nested Class Summary
Nested Classes Modifier and Type Class Description private class
NearSpansUnordered.SpanTotalLengthEndPositionWindow
Maintain totalSpanLength and maxEndPosition
-
Field Summary
Fields Modifier and Type Field Description private int
allowedSlop
private NearSpansUnordered.SpanTotalLengthEndPositionWindow
spanWindow
-
Fields inherited from class org.apache.lucene.queries.spans.ConjunctionSpans
atFirstInCurrentDoc, conjunction, oneExhaustedInCurrentDoc, subSpans
-
Fields inherited from class org.apache.lucene.queries.spans.Spans
NO_MORE_POSITIONS
-
Fields inherited from class org.apache.lucene.search.DocIdSetIterator
NO_MORE_DOCS
-
-
Constructor Summary
Constructors Constructor Description NearSpansUnordered(int allowedSlop, java.util.List<Spans> subSpans)
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
collect(SpanCollector collector)
Collect postings data from the leaves of the current Spans.int
endPosition()
Returns the end position for the current start position, or -1 whenSpans.nextStartPosition()
was not yet called on the current doc.int
nextStartPosition()
Returns the next start position for the current doc.(package private) static boolean
positionsOrdered(Spans spans1, Spans spans2)
Check whether two Spans in the same document are ordered with possible overlap.int
startPosition()
Returns the start position in the current doc, or -1 whenSpans.nextStartPosition()
was not yet called on the current doc.(package private) boolean
twoPhaseCurrentDocMatches()
int
width()
Return the width of the match, which is typically used to sloppy freq.-
Methods inherited from class org.apache.lucene.queries.spans.ConjunctionSpans
advance, asTwoPhaseIterator, cost, docID, getSubSpans, nextDoc, positionsCost, toMatchDoc
-
Methods inherited from class org.apache.lucene.queries.spans.Spans
doCurrentSpans, doStartCurrentDoc, toString
-
Methods inherited from class org.apache.lucene.search.DocIdSetIterator
all, empty, range, slowAdvance
-
-
-
-
Field Detail
-
allowedSlop
private final int allowedSlop
-
spanWindow
private NearSpansUnordered.SpanTotalLengthEndPositionWindow spanWindow
-
-
Constructor Detail
-
NearSpansUnordered
public NearSpansUnordered(int allowedSlop, java.util.List<Spans> subSpans) throws java.io.IOException
- Throws:
java.io.IOException
-
-
Method Detail
-
positionsOrdered
static boolean positionsOrdered(Spans spans1, Spans spans2)
Check whether two Spans in the same document are ordered with possible overlap.- Returns:
- true iff spans1 starts before spans2 or the spans start at the same position, and spans1 ends before spans2.
-
twoPhaseCurrentDocMatches
boolean twoPhaseCurrentDocMatches() throws java.io.IOException
- Specified by:
twoPhaseCurrentDocMatches
in classConjunctionSpans
- Throws:
java.io.IOException
-
nextStartPosition
public int nextStartPosition() throws java.io.IOException
Description copied from class:Spans
Returns the next start position for the current doc. There is always at least one start/end position per doc. After the last start/end position at the current doc this returnsSpans.NO_MORE_POSITIONS
.- Specified by:
nextStartPosition
in classSpans
- Throws:
java.io.IOException
-
startPosition
public int startPosition()
Description copied from class:Spans
Returns the start position in the current doc, or -1 whenSpans.nextStartPosition()
was not yet called on the current doc. After the last start/end position at the current doc this returnsSpans.NO_MORE_POSITIONS
.- Specified by:
startPosition
in classSpans
-
endPosition
public int endPosition()
Description copied from class:Spans
Returns the end position for the current start position, or -1 whenSpans.nextStartPosition()
was not yet called on the current doc. After the last start/end position at the current doc this returnsSpans.NO_MORE_POSITIONS
.- Specified by:
endPosition
in classSpans
-
width
public int width()
Description copied from class:Spans
Return the width of the match, which is typically used to sloppy freq. It is only legal to call this method when the iterator is on a valid doc ID and positioned. The return value must be positive, and lower values means that the match is better.
-
collect
public void collect(SpanCollector collector) throws java.io.IOException
Description copied from class:Spans
Collect postings data from the leaves of the current Spans.This method should only be called after
Spans.nextStartPosition()
, and beforeSpans.NO_MORE_POSITIONS
has been reached.
-
-