atg.commerce.pricing
Class QuantityAggregator

java.lang.Object
  atg.commerce.pricing.Aggregator
      atg.commerce.pricing.PropertyAggregator
          atg.commerce.pricing.QuantityAggregator

public class QuantityAggregator
extends PropertyAggregator

An implementation of the Aggregator class. The QuantityAggregator is a special case as we need to consider backwards compatibility. The formula for calculating the aggregated value differs from that of the PropertyAggregator, hence the reason for needing to create an explicit aggregator for this task.

Field Summary

static java.lang.String

CLASS_VERSION Class version string

Constructor Summary

QuantityAggregator()

Method Summary

protected AggregatorInfo	calculate(java.lang.String pOperation, java.lang.Double pAggValueSoFar, java.lang.Long pQuantityMatched, java.lang.Double pTargetValue, CommerceItem pItem, java.util.Map pAttributes) This method will calculate (based on the given operation) an aggregated value using pItem.
java.lang.Number	parseValue(java.lang.String pValue, java.lang.Class<?> pType) Parses a string value and returns a Number representation.

Methods inherited from class atg.commerce.pricing.Aggregator

getOperations, getOverrideProperty, isValidOperation, setOperations, setOverrideProperty

Methods inherited from class java.lang.Object

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

Field Detail

CLASS_VERSION

public static java.lang.String CLASS_VERSION

Class version string

Constructor Detail

QuantityAggregator

public QuantityAggregator()

Method Detail

calculate

protected AggregatorInfo calculate(java.lang.String pOperation,
                                   java.lang.Double pAggValueSoFar,
                                   java.lang.Long pQuantityMatched,
                                   java.lang.Double pTargetValue,
                                   CommerceItem pItem,
                                   java.util.Map pAttributes)
                            throws PricingException

This method will calculate (based on the given operation) an aggregated value using pItem.

Overrides:

calculate in class PropertyAggregator

Parameters:

pOperation - the operation to invoke on the aggregator

pAggValueSoFar - the aggregated value so far, which may be potentially derived from many calculations from multiple items

pQuantityMatched - the number of items that have contributed to the aggregated value

pTargetValue - a value specified in the condition/offer of a promotion which can be used as a target in relation to the aggregated value. May or may not be relevant to an aggregator

pItem - the item that is currently being evaluated

pAttributes - extra parameters

Returns:

holds amended aggValueSoFar and quantityMatched values

Throws:

PricingException

parseValue

public java.lang.Number parseValue(java.lang.String pValue,
                                   java.lang.Class<?> pType)
                            throws java.lang.NumberFormatException

Parses a string value and returns a Number representation.

Overrides:

parseValue in class PropertyAggregator

Parameters:

pValue - value to be parsed

pType - class type of pValue

Returns:

parsed value

Throws:

java.lang.NumberFormatException - if pValue could not be parsed