org.apache.lucene.document
Class DoubleDocValuesField

java.lang.Object
  extended by org.apache.lucene.document.Field
      extended by org.apache.lucene.document.NumericDocValuesField
          extended by 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 FieldCache.getDoubles(AtomicReader, String, boolean).

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.Index, Field.Store, Field.TermVector
 
Field Summary
 
Fields inherited from class org.apache.lucene.document.NumericDocValuesField
TYPE
 
Fields inherited from class org.apache.lucene.document.Field
boost, fieldsData, name, tokenStream, type
 
Constructor Summary
DoubleDocValuesField(String name, double value)
          Creates a new DocValues field with the specified 64-bit double value
 
Method Summary
 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.Field
binaryValue, boost, fieldType, name, numericValue, readerValue, setBoost, setBytesValue, setBytesValue, setByteValue, setFloatValue, setIntValue, setReaderValue, setShortValue, setStringValue, setTokenStream, stringValue, tokenStream, tokenStreamValue, toString, translateFieldType
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

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 Detail

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


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