org.apache.lucene.search

Class ConstantScoreRangeQuery

java.lang.Object

org.apache.lucene.search.Query

org.apache.lucene.search.ConstantScoreRangeQuery

All Implemented Interfaces:

java.io.Serializable, java.lang.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.)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ConstantScoreRangeQuery(java.lang.String fieldName, java.lang.String lowerVal, java.lang.String upperVal, boolean includeLower, boolean includeUpper)

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Returns true if o is equal to this.
java.lang.String	getField() Returns the field name for this query
java.lang.String	getLowerVal() Returns the value of the lower endpoint of this range query, null if open ended
java.lang.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.
java.lang.String	toString(java.lang.String field) Prints a user-readable version of this query.

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

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ConstantScoreRangeQuery

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

Method Detail

getField

public java.lang.String getField()

Returns the field name for this query

getLowerVal

public java.lang.String getLowerVal()

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

getUpperVal

public java.lang.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 java.io.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:

java.io.IOException

toString

public java.lang.String toString(java.lang.String field)

Prints a user-readable version of this query.

Specified by:

toString in class Query

equals

public boolean equals(java.lang.Object o)

Returns true if o is equal to this.

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Returns a hash code value for this object.

Overrides:

hashCode in class java.lang.Object