Package org.apache.lucene.document

Class DoubleDocValuesField

java.lang.Object

org.apache.lucene.document.Field

org.apache.lucene.document.NumericDocValuesField

org.apache.lucene.document.DoubleDocValuesField

All Implemented Interfaces:

IndexableField

public class DoubleDocValuesField
extends NumericDocValuesField

Syntactic sugar for encoding doubles as NumericDocValues via Double.doubleToRawLongBits(double).

Per-document double values can be retrieved via LeafReader.getNumericDocValues(String).

NOTE: In most all cases this will be rather inefficient, requiring eight bytes per document. Consider encoding double values yourself with only as much precision as you require.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.document.Field

Field.Store

Field Summary

Fields inherited from class org.apache.lucene.document.NumericDocValuesField

TYPE

Fields inherited from class org.apache.lucene.document.Field

fieldsData, name, tokenStream, type

Constructor Summary

Constructors

Constructor	Description
DoubleDocValuesField(String name, double value)	Creates a new DocValues field with the specified 64-bit double value

Method Summary

Modifier and Type	Method	Description
void	setDoubleValue(double value)	Expert: change the value of this field.
void	setLongValue(long value)	Expert: change the value of this field.

Methods inherited from class org.apache.lucene.document.NumericDocValuesField

newSlowExactQuery, newSlowRangeQuery

Methods inherited from class org.apache.lucene.document.Field

binaryValue, fieldType, getCharSequenceValue, name, numericValue, readerValue, setBytesValue, setBytesValue, setByteValue, setFloatValue, setIntValue, setReaderValue, setShortValue, setStringValue, setTokenStream, stringValue, tokenStream, tokenStreamValue, toString

Methods inherited from class java.lang.Object

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

Constructor Details

DoubleDocValuesField

public DoubleDocValuesField(String name,
 double value)

Creates a new DocValues field with the specified 64-bit double value

Parameters:

name - field name

value - 64-bit double value

Throws:

IllegalArgumentException - if the field name is null

Method Details

setDoubleValue

public void setDoubleValue(double value)

Description copied from class: Field

Expert: change the value of this field. See Field.setStringValue(String).

Overrides:

setDoubleValue in class Field

setLongValue

public void setLongValue(long value)

Description copied from class: Field

Expert: change the value of this field. See Field.setStringValue(String).

Overrides:

setLongValue in class Field