Module org.apache.lucene.highlighter

Package org.apache.lucene.search.vectorhighlight

Class FieldQuery

java.lang.Object

org.apache.lucene.search.vectorhighlight.FieldQuery

public class FieldQuery
extends Object

FieldQuery breaks down query object into terms/phrases and keeps them in a QueryPhraseMap structure.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FieldQuery.QueryPhraseMap	Internal structure of a query for highlighting: represents a nested query structure

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final boolean	fieldMatch
private static final int	MAX_MTQ_TERMS
(package private) Map<String,FieldQuery.QueryPhraseMap>	rootMaps
(package private) int	termOrPhraseNumber
(package private) Map<String,Set<String>>	termSetMap

Constructor Summary

Constructors

Constructor	Description
FieldQuery(Query query, boolean phraseHighlight, boolean fieldMatch)	For backwards compatibility you can initialize FieldQuery without an IndexReader, which is only required to support MultiTermQuery
FieldQuery(Query query, IndexReader reader, boolean phraseHighlight, boolean fieldMatch)

Method Summary

Modifier and Type	Method	Description
private void	checkOverlap(Collection<Query> expandQueries, Term[] src, Term[] dest, int slop, float boost)
private void	checkOverlap(Collection<Query> expandQueries, PhraseQuery a, float aBoost, PhraseQuery b, float bBoost)
(package private) Collection<Query>	expand(Collection<Query> flatQueries)
protected void	flatten(Query sourceQuery, IndexSearcher searcher, Collection<Query> flatQueries, float boost)
FieldQuery.QueryPhraseMap	getFieldTermMap(String fieldName, String term)
private String	getKey(Query query)
private FieldQuery.QueryPhraseMap	getRootMap(String fieldName)
(package private) FieldQuery.QueryPhraseMap	getRootMap(Query query)
(package private) Set<String>	getTermSet(String field)
private Set<String>	getTermSet(Query query)
(package private) int	nextTermOrPhraseNumber()
(package private) void	saveTerms(Collection<Query> flatQueries, IndexSearcher searcher)
FieldQuery.QueryPhraseMap	searchPhrase(String fieldName, List<FieldTermStack.TermInfo> phraseCandidate)

Methods inherited from class java.lang.Object

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

Field Details

fieldMatch

final boolean fieldMatch

rootMaps

Map<String,FieldQuery.QueryPhraseMap> rootMaps

termSetMap

Map<String,Set<String>> termSetMap

termOrPhraseNumber

int termOrPhraseNumber

MAX_MTQ_TERMS

private static final int MAX_MTQ_TERMS

See Also:

• Constant Field Values

Constructor Details

FieldQuery

public FieldQuery(Query query,
 IndexReader reader,
 boolean phraseHighlight,
 boolean fieldMatch)
           throws IOException

Throws:

IOException

FieldQuery

FieldQuery(Query query,
 boolean phraseHighlight,
 boolean fieldMatch)
    throws IOException

For backwards compatibility you can initialize FieldQuery without an IndexReader, which is only required to support MultiTermQuery

Throws:

IOException

Method Details

flatten

protected void flatten(Query sourceQuery,
 IndexSearcher searcher,
 Collection<Query> flatQueries,
 float boost)
                throws IOException

Throws:

IOException

expand

Collection<Query> expand(Collection<Query> flatQueries)

checkOverlap

private void checkOverlap(Collection<Query> expandQueries,
 PhraseQuery a,
 float aBoost,
 PhraseQuery b,
 float bBoost)

checkOverlap

private void checkOverlap(Collection<Query> expandQueries,
 Term[] src,
 Term[] dest,
 int slop,
 float boost)

getRootMap

FieldQuery.QueryPhraseMap getRootMap(Query query)

getKey

private String getKey(Query query)

saveTerms

void saveTerms(Collection<Query> flatQueries,
 IndexSearcher searcher)
        throws IOException

Throws:

IOException

getTermSet

private Set<String> getTermSet(Query query)

getTermSet

Set<String> getTermSet(String field)

getFieldTermMap

public FieldQuery.QueryPhraseMap getFieldTermMap(String fieldName,
 String term)

Returns:

QueryPhraseMap

searchPhrase

public FieldQuery.QueryPhraseMap searchPhrase(String fieldName,
 List<FieldTermStack.TermInfo> phraseCandidate)

Returns:

QueryPhraseMap

getRootMap

private FieldQuery.QueryPhraseMap getRootMap(String fieldName)

nextTermOrPhraseNumber

int nextTermOrPhraseNumber()