Module org.apache.lucene.queries

Package org.apache.lucene.queries.intervals

Class MinimizingConjunctionIntervalsSource

java.lang.Object

org.apache.lucene.queries.intervals.IntervalsSource

org.apache.lucene.queries.intervals.MinimizingConjunctionIntervalsSource

Direct Known Subclasses:

OrderedIntervalsSource, UnorderedIntervalsSource

abstract class MinimizingConjunctionIntervalsSource
extends IntervalsSource

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static interface	MinimizingConjunctionIntervalsSource.MatchCallback

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<IntervalsSource>	subSources

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MinimizingConjunctionIntervalsSource(List<IntervalsSource> subSources)

Method Summary

Modifier and Type	Method	Description
(package private) static MinimizingConjunctionIntervalsSource.MatchCallback	cacheIterators(Collection<CachingMatchesIterator> its)
protected abstract IntervalIterator	combine(List<IntervalIterator> iterators, MinimizingConjunctionIntervalsSource.MatchCallback onMatch)
IntervalIterator	intervals(String field, LeafReaderContext ctx)	Create an IntervalIterator exposing the minimum intervals defined by this IntervalsSource
IntervalMatchesIterator	matches(String field, LeafReaderContext ctx, int doc)	Return a MatchesIterator over the intervals defined by this IntervalsSource for a given document and field
void	visit(String field, QueryVisitor visitor)	Expert: visit the tree of sources

Methods inherited from class org.apache.lucene.queries.intervals.IntervalsSource

equals, hashCode, minExtent, pullUpDisjunctions, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

subSources

protected final List<IntervalsSource> subSources

Constructor Details

MinimizingConjunctionIntervalsSource

protected MinimizingConjunctionIntervalsSource(List<IntervalsSource> subSources)

Method Details

combine

protected abstract IntervalIterator combine(List<IntervalIterator> iterators,
 MinimizingConjunctionIntervalsSource.MatchCallback onMatch)

intervals

public IntervalIterator intervals(String field,
 LeafReaderContext ctx)
                           throws IOException

Description copied from class: IntervalsSource

Create an IntervalIterator exposing the minimum intervals defined by this IntervalsSource

Returns null if no intervals for this field exist in this segment

Specified by:

intervals in class IntervalsSource

Parameters:

field - the field to read positions from

ctx - the context for which to return the iterator

Throws:

IOException

matches

public IntervalMatchesIterator matches(String field,
 LeafReaderContext ctx,
 int doc)
                                throws IOException

Description copied from class: IntervalsSource

Return a MatchesIterator over the intervals defined by this IntervalsSource for a given document and field

Returns null if no intervals exist in the given document and field

Specified by:

matches in class IntervalsSource

Parameters:

field - the field to read positions from

ctx - the document's context

doc - the document to return matches for

Throws:

IOException

visit

public void visit(String field,
 QueryVisitor visitor)

Description copied from class: IntervalsSource

Expert: visit the tree of sources

Specified by:

visit in class IntervalsSource

cacheIterators

static MinimizingConjunctionIntervalsSource.MatchCallback cacheIterators(Collection<CachingMatchesIterator> its)