Package org.apache.accumulo.core.iterators.user

Class BigDecimalCombiner.BigDecimalSummingCombiner

java.lang.Object

org.apache.accumulo.core.iterators.WrappingIterator

org.apache.accumulo.core.iterators.Combiner

org.apache.accumulo.core.iterators.TypedValueCombiner<BigDecimal>

org.apache.accumulo.core.iterators.user.BigDecimalCombiner

org.apache.accumulo.core.iterators.user.BigDecimalCombiner.BigDecimalSummingCombiner

All Implemented Interfaces:

OptionDescriber, SortedKeyValueIterator<Key,Value>, YieldingKeyValueIterator<Key,Value>

Enclosing class:

BigDecimalCombiner

public static class BigDecimalCombiner.BigDecimalSummingCombiner
extends BigDecimalCombiner

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.accumulo.core.iterators.user.BigDecimalCombiner

BigDecimalCombiner.BigDecimalEncoder, BigDecimalCombiner.BigDecimalMaxCombiner, BigDecimalCombiner.BigDecimalMinCombiner, BigDecimalCombiner.BigDecimalSummingCombiner

Nested classes/interfaces inherited from class org.apache.accumulo.core.iterators.Combiner

Combiner.ValueIterator

Nested classes/interfaces inherited from interface org.apache.accumulo.core.iterators.OptionDescriber

OptionDescriber.IteratorOptions

Field Summary

Fields inherited from class org.apache.accumulo.core.iterators.TypedValueCombiner

LOSSY

Fields inherited from class org.apache.accumulo.core.iterators.Combiner

ALL_OPTION, COLUMNS_OPTION, REDUCE_ON_FULL_COMPACTION_ONLY_OPTION

Constructor Summary

Constructors

Constructor	Description
BigDecimalSummingCombiner()

Method Summary

Modifier and Type	Method	Description
BigDecimal	typedReduce(Key key, Iterator<BigDecimal> iter)	Reduces a list of V into a single V.

Methods inherited from class org.apache.accumulo.core.iterators.user.BigDecimalCombiner

describeOptions, init, validateOptions

Methods inherited from class org.apache.accumulo.core.iterators.TypedValueCombiner

deepCopy, reduce, setEncoder, setEncoder, setLossyness, testEncoder, testEncoder

Methods inherited from class org.apache.accumulo.core.iterators.Combiner

getTopKey, getTopValue, hasTop, next, seek, setColumns, setCombineAllColumns, setReduceOnFullCompactionOnly

Methods inherited from class org.apache.accumulo.core.iterators.WrappingIterator

getSource, setSource

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.accumulo.core.iterators.YieldingKeyValueIterator

enableYielding

Constructor Details

BigDecimalSummingCombiner

public BigDecimalSummingCombiner()

Method Details

typedReduce

public BigDecimal typedReduce(Key key,
 Iterator<BigDecimal> iter)

Description copied from class: TypedValueCombiner

Reduces a list of V into a single V.

Specified by:

typedReduce in class TypedValueCombiner<BigDecimal>

Parameters:

key - The most recent version of the Key being reduced.

iter - An iterator over the V for different versions of the key.

Returns:

The combined V.