org.apache.lucene.search

Class DocValuesRangeQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.search.DocValuesRangeQuery

All Implemented Interfaces:

Cloneable

public final class DocValuesRangeQuery
extends Query

A range query that works on top of the doc values APIs. Such queries are usually slow since they do not use an inverted index. However, in the dense case where most documents match this query, it might be as fast or faster than a regular NumericRangeQuery.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Method Summary

Methods

Modifier and Type	Method and Description
Weight	createWeight(IndexSearcher searcher, boolean needsScores) Expert: Constructs an appropriate Weight implementation for this query.
boolean	equals(Object obj)
int	hashCode()
static Query	newBytesRefRange(String field, BytesRef lowerVal, BytesRef upperVal, boolean includeLower, boolean includeUpper) Create a new numeric range query on a numeric doc-values field.
static Query	newLongRange(String field, Long lowerVal, Long upperVal, boolean includeLower, boolean includeUpper) Create a new numeric range query on a numeric doc-values field.
Query	rewrite(IndexReader reader) Expert: called to re-write queries into primitive queries.
String	toString(String field) Prints a query to a string, with field assumed to be the default field and omitted.

Methods inherited from class org.apache.lucene.search.Query

clone, getBoost, setBoost, toString

Methods inherited from class java.lang.Object

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

Method Detail

newLongRange

public static Query newLongRange(String field,
                 Long lowerVal,
                 Long upperVal,
                 boolean includeLower,
                 boolean includeUpper)

Create a new numeric range query on a numeric doc-values field. The field must has been indexed with either DocValuesType.NUMERIC or DocValuesType.SORTED_NUMERIC doc values.

newBytesRefRange

public static Query newBytesRefRange(String field,
                     BytesRef lowerVal,
                     BytesRef upperVal,
                     boolean includeLower,
                     boolean includeUpper)

Create a new numeric range query on a numeric doc-values field. The field must has been indexed with DocValuesType.SORTED or DocValuesType.SORTED_SET doc values.

equals

public boolean equals(Object obj)

Overrides:

equals in class Query

hashCode

public int hashCode()

Overrides:

hashCode in class Query

toString

public String toString(String field)

Description copied from class: Query

Prints a query to a string, with field assumed to be the default field and omitted.

Specified by:

toString in class Query

rewrite

public Query rewrite(IndexReader reader)
              throws IOException

Description copied from class: Query

Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.

Overrides:

rewrite in class Query

Throws:

IOException

createWeight

public Weight createWeight(IndexSearcher searcher,
                  boolean needsScores)
                    throws IOException

Description copied from class: Query

Expert: Constructs an appropriate Weight implementation for this query.

Only implemented by primitive queries, which re-write to themselves.

Overrides:

createWeight in class Query

needsScores - True if document scores (Scorer.score()) or match frequencies (Scorer.freq()) are needed.

Throws:

IOException