com.tangosol.util.aggregator
Class BigDecimalMax

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.BigDecimalMax

All Implemented Interfaces:

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

public class BigDecimalMax
extends AbstractBigDecimalAggregator

Calculates a maximum of numeric values 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

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

BigDecimalMax(java.lang.String sMethod)
Construct a BigDecimalMax aggregator.

BigDecimalMax(ValueExtractor extractor)
Construct a BigDecimalMax 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, 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

BigDecimalMax

public BigDecimalMax()

Default constructor (necessary for the ExternalizableLite interface).

BigDecimalMax

public BigDecimalMax(ValueExtractor extractor)

Construct a BigDecimalMax aggregator.

Parameters:

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

BigDecimalMax

public BigDecimalMax(java.lang.String sMethod)

Construct a BigDecimalMax aggregator.

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