org.apache.lucene.search
Class ConstantScoreRangeQuery

java.lang.Object
  org.apache.lucene.search.Query
      org.apache.lucene.search.ConstantScoreRangeQuery

All Implemented Interfaces:

Serializable, Cloneable

public class ConstantScoreRangeQuery
extends Query

A range query that returns a constant score equal to its boost for all documents in the range.

It does not have an upper bound on the number of clauses covered in the range.

If an endpoint is null, it is said to be "open". Either or both endpoints may be open. Open endpoints may not be exclusive (you can't select all but the first or last term without explicitly specifying the term to exclude.)

Version:

$Id: ConstantScoreRangeQuery.java 696056 2008-09-16 21:03:21Z gsingers $

See Also:

Serialized Form

Constructor Summary

ConstantScoreRangeQuery(String fieldName, String lowerVal, String upperVal, boolean includeLower, boolean includeUpper)

ConstantScoreRangeQuery(String fieldName, String lowerVal, String upperVal, boolean includeLower, boolean includeUpper, Collator collator)

Method Summary

boolean	equals(Object o) Returns true if o is equal to this.
String	getField() Returns the field name for this query
String	getLowerVal() Returns the value of the lower endpoint of this range query, null if open ended
String	getUpperVal() Returns the value of the upper endpoint of this range query, null if open ended
int	hashCode() Returns a hash code value for this object.
boolean	includesLower() Returns true if the lower endpoint is inclusive
boolean	includesUpper() Returns true if the upper endpoint is inclusive
Query	rewrite(IndexReader reader) Expert: called to re-write queries into primitive queries.
String	toString(String field) Prints a user-readable version of this query.

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantScoreRangeQuery

public ConstantScoreRangeQuery(String fieldName,
                               String lowerVal,
                               String upperVal,
                               boolean includeLower,
                               boolean includeUpper)

ConstantScoreRangeQuery

public ConstantScoreRangeQuery(String fieldName,
                               String lowerVal,
                               String upperVal,
                               boolean includeLower,
                               boolean includeUpper,
                               Collator collator)

Method Detail

getField

public String getField()

Returns the field name for this query

getLowerVal

public String getLowerVal()

Returns the value of the lower endpoint of this range query, null if open ended

getUpperVal

public String getUpperVal()

Returns the value of the upper endpoint of this range query, null if open ended

includesLower

public boolean includesLower()

Returns true if the lower endpoint is inclusive

includesUpper

public boolean includesUpper()

Returns true if the upper endpoint is inclusive

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

toString

public String toString(String field)

Prints a user-readable version of this query.

Specified by:

toString in class Query

equals

public boolean equals(Object o)

Returns true if o is equal to this.

Overrides:

equals in class Object

hashCode

public int hashCode()

Returns a hash code value for this object.

Overrides:

hashCode in class Object