Skip navigation links

com.tangosol.util.aggregator
Class BigDecimalSum

java.lang.Object
com.tangosol.util.Base
com.tangosol.util.BitHelper
com.tangosol.util.ExternalizableHelper
com.tangosol.util.aggregator.AbstractAggregator
com.tangosol.util.aggregator.AbstractBigDecimalAggregator
com.tangosol.util.aggregator.BigDecimalSum

All Implemented Interfaces:

ExternalizableLite, PortableObject, InvocableMap.EntryAggregator, InvocableMap.ParallelAwareAggregator, java.io.Serializable

public class BigDecimalSum

extends AbstractBigDecimalAggregator

Calculates an sum for values of any numberic type extracted from a set of entries in a Map in a form of a BigDecimal value. All the extracted objects will be treated as BigDecimal, BigInteger or Java double values. If the set of entries is empty, a null result is returned.

Since:

Coherence 3.2

Author:

gg 2006.07.18

Field Summary

Fields inherited from class com.tangosol.util.aggregator.AbstractBigDecimalAggregator

m_count, m_decResult

Fields inherited from class com.tangosol.util.aggregator.AbstractAggregator

m_fParallel

Constructor Summary

BigDecimalSum()
Default constructor (necessary for the ExternalizableLite interface).

BigDecimalSum(java.lang.String sMethod)
Construct an BigDecimalSum object.

BigDecimalSum(ValueExtractor extractor)
Construct a BigDecimalSum aggregator.

Method Summary

protected void

process(java.lang.Object o, boolean fFinal) Incorporate one aggregatable value into the result.

Methods inherited from class com.tangosol.util.aggregator.AbstractBigDecimalAggregator

ensureBigDecimal, finalizeResult, init

Methods inherited from class com.tangosol.util.aggregator.AbstractAggregator

aggregate, aggregateResults, equals, getParallelAggregator, getValueExtractor, hashCode, processEntry, readExternal, readExternal, toString, writeExternal, writeExternal

Methods inherited from class com.tangosol.util.BitHelper

countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, rotateLeft, rotateLeft, rotateLeft, rotateRight, rotateRight, rotateRight, toBitString, toBitString, toBitString

Constructor Detail

BigDecimalSum

public BigDecimalSum()

Default constructor (necessary for the ExternalizableLite interface).

BigDecimalSum

public BigDecimalSum(ValueExtractor extractor)

Construct a BigDecimalSum aggregator.

Parameters:

extractor - the extractor that provides a value in the form of any Java object that is a Number

BigDecimalSum

public BigDecimalSum(java.lang.String sMethod)

Construct an BigDecimalSum object.

Parameters:

sMethod - the name of the method that returns a value in the form of any Java object that is a Number

Method Detail

process

protected void process(java.lang.Object o,
                       boolean fFinal)

Incorporate one aggregatable value into the result.

If the fFinal parameter is true, the given object is a partial result (returned by an individual parallel aggregator) that should be incorporated into the final result; otherwise, the object is a value extracted from an InvocableMap.Entry.

Specified by:

process in class AbstractAggregator

Parameters:

o - the value to incorporate into the aggregated result

fFinal - true to indicate that the given object is a partial result returned by a parallel aggregator

Skip navigation links