org.apache.lucene.search.intervals

Class IntervalsSource

java.lang.Object

org.apache.lucene.search.intervals.IntervalsSource

public abstract class IntervalsSource
extends Object

A helper class for IntervalQuery that provides an IntervalIterator for a given field and segment Static constructor functions for various different sources can be found in the Intervals class

Constructor Summary

Constructors

Constructor and Description
IntervalsSource()

Method Summary

Modifier and Type	Method and Description
abstract boolean	equals(Object other)
abstract void	extractTerms(String field, Set<Term> terms) Expert: collect Term objects from this source, to be used for top-level term scoring
abstract int	hashCode()
abstract IntervalIterator	intervals(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
abstract MatchesIterator	matches(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
abstract String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

IntervalsSource

public IntervalsSource()

Method Detail

intervals

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

Create an IntervalIterator exposing the minimum intervals defined by this IntervalsSource Returns null if no intervals for this field exist in this segment

Parameters:

field - the field to read positions from

ctx - the context for which to return the iterator

Throws:

IOException

matches

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

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

Parameters:

field - the field to read positions from

ctx - the document's context

doc - the document to return matches for

Throws:

IOException

extractTerms

public abstract void extractTerms(String field,
                                  Set<Term> terms)

Expert: collect Term objects from this source, to be used for top-level term scoring

Parameters:

field - the field to be scored

terms - a Set which terms should be added to

hashCode

public abstract int hashCode()

Overrides:

hashCode in class Object

equals

public abstract boolean equals(Object other)

Overrides:

equals in class Object

toString

public abstract String toString()

Overrides:

toString in class Object