org.cdlib.xtf.textEngine
Class NumericRangeQuery

Object
  Query
      NumericRangeQuery

All Implemented Interfaces:

Serializable, Cloneable

public class NumericRangeQuery
extends Query

A query that implements efficient range searching on numeric data. Handles positive numbers up to 63 bits.

See Also:

Serialized Form

Nested Class Summary

private class	NumericRangeQuery.NumericRangeScorer
private class	NumericRangeQuery.NumericRangeWeight

Field Summary

private String	fieldName
private boolean	includeLower
private boolean	includeUpper
private String	lowerVal
private String	upperVal

Constructor Summary

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

Method Summary

protected Weight	createWeight(Searcher searcher)
boolean	equals(Object o) Returns true if o is equal to this.
void	extractTerms(Set terms)
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)
String	toString(String field) Prints a user-readable version of this query.

Methods inherited from class Query

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

Methods inherited from class Object

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

Field Detail

fieldName

private final String fieldName

includeLower

private final boolean includeLower

lowerVal

private final String lowerVal

includeUpper

private final boolean includeUpper

upperVal

private final String upperVal

Constructor Detail

NumericRangeQuery

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

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

Overrides:

rewrite in class Query

Throws:

IOException

extractTerms

public void extractTerms(Set terms)

Overrides:

extractTerms in class Query

createWeight

protected Weight createWeight(Searcher searcher)

Overrides:

createWeight in class Query

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