org.apache.lucene.search

Class DocValuesStats.LongDocValuesStats

java.lang.Object

org.apache.lucene.search.DocValuesStats<T>

org.apache.lucene.search.DocValuesStats.NumericDocValuesStats<Long>

org.apache.lucene.search.DocValuesStats.LongDocValuesStats

Enclosing class:

DocValuesStats<T>

public static final class DocValuesStats.LongDocValuesStats
extends DocValuesStats.NumericDocValuesStats<Long>

Holds DocValues statistics for a numeric field storing long values.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.DocValuesStats

DocValuesStats.DoubleDocValuesStats, DocValuesStats.LongDocValuesStats, DocValuesStats.NumericDocValuesStats<T extends Number>, DocValuesStats.SortedDocValuesStats, DocValuesStats.SortedDoubleDocValuesStats, DocValuesStats.SortedLongDocValuesStats, DocValuesStats.SortedNumericDocValuesStats<T extends Number>, DocValuesStats.SortedSetDocValuesStats

Field Summary

Fields inherited from class org.apache.lucene.search.DocValuesStats.NumericDocValuesStats

mean, ndv, variance

Fields inherited from class org.apache.lucene.search.DocValuesStats

field, max, min

Constructor Summary

Constructors

Constructor and Description
LongDocValuesStats(String field)

Method Summary

Modifier and Type	Method and Description
protected void	doAccumulate(int doc, int count) Called after DocValuesStats.accumulate(int) was processed and verified that the document has a value for the field.
Long	sum() Returns the sum of values of the field.

Methods inherited from class org.apache.lucene.search.DocValuesStats.NumericDocValuesStats

init, mean, stdev, variance

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

count, field, max, min, missing

Methods inherited from class java.lang.Object

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

Constructor Detail

LongDocValuesStats

public LongDocValuesStats(String field)

Method Detail

doAccumulate

protected void doAccumulate(int doc,
                            int count)
                     throws IOException

Description copied from class: DocValuesStats

Called after DocValuesStats.accumulate(int) was processed and verified that the document has a value for the field. Implementations should update the statistics based on the value of the current document.

Specified by:

doAccumulate in class DocValuesStats<Long>

Parameters:

doc - the document to read the value of for updating statistics.

count - the updated number of documents with value for this field.

Throws:

IOException

sum

public Long sum()

Description copied from class: DocValuesStats.NumericDocValuesStats

Returns the sum of values of the field. Note that if the values are large, the sum might overflow.

Specified by:

sum in class DocValuesStats.NumericDocValuesStats<Long>