org.apache.lucene.bigram

Class BigramSpanRangeQuery

Object

Query

SpanQuery

SpanRangeQuery

BigramSpanRangeQuery

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

XtfSpanRangeQuery

public class BigramSpanRangeQuery
extends SpanRangeQuery

Matches spans containing terms within a specified range. Performs extra filtering to make sure bi-grams are not matched.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private Set	stopSet

Constructor Summary

Constructors

Constructor and Description
BigramSpanRangeQuery(Term lowerTerm, Term upperTerm, boolean inclusive, int termLimit) Constructs a span query selecting all terms greater than lowerTerm but less than upperTerm.

Method Summary

Modifier and Type	Method and Description
void	setStopWords(Set set)
protected boolean	shouldSkipTerm(Term term) Enables derived classes to skip certain terms in the index (e.g. stop words, bi-grams, etc.)

Methods inherited from class SpanRangeQuery

combine, getField, getLowerTerm, getSpans, getTermLimit, getTerms, getUpperTerm, isInclusive, rewrite, toString

Methods inherited from class SpanQuery

createWeight, getSpanRecording, setSpanRecording

Methods inherited from class Query

clone, extractTerms, getBoost, getSimilarity, mergeBooleanQueries, setBoost, toString, weight

Methods inherited from class Object

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

Field Detail

stopSet

private Set stopSet

Constructor Detail

BigramSpanRangeQuery

public BigramSpanRangeQuery(Term lowerTerm,
                            Term upperTerm,
                            boolean inclusive,
                            int termLimit)

Constructs a span query selecting all terms greater than lowerTerm but less than upperTerm. There must be at least one term and either term may be null, in which case there is no bound on that side, but if there are two terms, both terms must be for the same field. Applies a limit on the total number of terms matched.

Method Detail

setStopWords

public void setStopWords(Set set)

shouldSkipTerm

protected boolean shouldSkipTerm(Term term)

Description copied from class: SpanRangeQuery

Enables derived classes to skip certain terms in the index (e.g. stop words, bi-grams, etc.) Default implementation doesn't skip any terms.

Overrides:

shouldSkipTerm in class SpanRangeQuery