org.apache.lucene.queries.intervals

Class ConjunctionIntervalsSource

java.lang.Object

org.apache.lucene.queries.intervals.IntervalsSource

org.apache.lucene.queries.intervals.ConjunctionIntervalsSource

Direct Known Subclasses:

BlockIntervalsSource, ContainedByIntervalsSource, ContainingIntervalsSource, OrderedIntervalsSource, OverlappingIntervalsSource, UnorderedIntervalsSource

abstract class ConjunctionIntervalsSource
extends IntervalsSource

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	ConjunctionIntervalsSource.ConjunctionMatchesIterator
private static class	ConjunctionIntervalsSource.SingletonMatchesIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	isMinimizing
protected java.util.List<IntervalsSource>	subSources

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ConjunctionIntervalsSource(java.util.List<IntervalsSource> subSources, boolean isMinimizing)

Method Summary

Modifier and Type	Method and Description
protected abstract IntervalIterator	combine(java.util.List<IntervalIterator> iterators)
IntervalIterator	intervals(java.lang.String field, LeafReaderContext ctx) Create an IntervalIterator exposing the minimum intervals defined by this IntervalsSource Returns null if no intervals for this field exist in this segment
MatchesIterator	matches(java.lang.String field, LeafReaderContext ctx, int doc) 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
void	visit(java.lang.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 Detail

subSources

protected final java.util.List<IntervalsSource> subSources

isMinimizing

protected final boolean isMinimizing

Constructor Detail

ConjunctionIntervalsSource

protected ConjunctionIntervalsSource(java.util.List<IntervalsSource> subSources,
                                     boolean isMinimizing)

Method Detail

visit

public void visit(java.lang.String field,
                  QueryVisitor visitor)

Description copied from class: IntervalsSource

Expert: visit the tree of sources

Specified by:

visit in class IntervalsSource

intervals

public final IntervalIterator intervals(java.lang.String field,
                                        LeafReaderContext ctx)
                                 throws java.io.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:

java.io.IOException

combine

protected abstract IntervalIterator combine(java.util.List<IntervalIterator> iterators)

matches

public final MatchesIterator matches(java.lang.String field,
                                     LeafReaderContext ctx,
                                     int doc)
                              throws java.io.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:

java.io.IOException