org.apache.lucene.search

Class MatchesUtils

java.lang.Object

org.apache.lucene.search.MatchesUtils

public final class MatchesUtils
extends java.lang.Object

Contains static functions that aid the implementation of Matches and MatchesIterator interfaces.

Field Summary

Fields

Modifier and Type	Field and Description
static Matches	MATCH_WITH_NO_TERMS Indicates a match with no term positions, for example on a Point or DocValues field, or a field indexed as docs and freqs only

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MatchesUtils()

Method Summary

Modifier and Type	Method and Description
static MatchesIterator	disjunction(LeafReaderContext context, int doc, Query query, java.lang.String field, BytesRefIterator terms) Create a MatchesIterator that is a disjunction over a list of terms extracted from a BytesRefIterator.
static MatchesIterator	disjunction(java.util.List<MatchesIterator> subMatches) Create a MatchesIterator that iterates in order over all matches in a set of subiterators
static Matches	forField(java.lang.String field, IOSupplier<MatchesIterator> mis) Create a Matches for a single field
static Matches	fromSubMatches(java.util.List<Matches> subMatches) Amalgamate a collection of Matches into a single object

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MATCH_WITH_NO_TERMS

public static final Matches MATCH_WITH_NO_TERMS

Indicates a match with no term positions, for example on a Point or DocValues field, or a field indexed as docs and freqs only

Constructor Detail

MatchesUtils

private MatchesUtils()

Method Detail

fromSubMatches

public static Matches fromSubMatches(java.util.List<Matches> subMatches)

Amalgamate a collection of Matches into a single object

forField

public static Matches forField(java.lang.String field,
                               IOSupplier<MatchesIterator> mis)
                        throws java.io.IOException

Create a Matches for a single field

Throws:

java.io.IOException

disjunction

public static MatchesIterator disjunction(java.util.List<MatchesIterator> subMatches)
                                   throws java.io.IOException

Create a MatchesIterator that iterates in order over all matches in a set of subiterators

Throws:

java.io.IOException

disjunction

public static MatchesIterator disjunction(LeafReaderContext context,
                                          int doc,
                                          Query query,
                                          java.lang.String field,
                                          BytesRefIterator terms)
                                   throws java.io.IOException

Create a MatchesIterator that is a disjunction over a list of terms extracted from a BytesRefIterator. Only terms that have at least one match in the given document will be included

Throws:

java.io.IOException