atg.commerce.pricing
Class DiscountCalculatorService

java.lang.Object
  atg.nucleus.logging.VariableArgumentApplicationLoggingImpl
      atg.nucleus.GenericService
          atg.commerce.pricing.DiscountCalculatorService

All Implemented Interfaces:

atg.naming.AbsoluteNameable, NameContextBindingListener, NameContextElement, atg.naming.NameContextParentable, NameResolver, AdminableService, atg.nucleus.Configured, ApplicationLogging, atg.nucleus.logging.ApplicationLoggingSender, atg.nucleus.logging.TraceApplicationLogging, VariableArgumentApplicationLogging, ComponentNameResolver, Service, ServiceListener, java.util.EventListener

Direct Known Subclasses:

ItemDiscountCalculator, OrderDiscountCalculator, ShippingDiscountCalculator, TaxDiscountCalculator

public class DiscountCalculatorService
extends GenericService

A GenericService version of a discount calculator. Discount calculators can extend this class so as to eliminate redundant configuration code. Additionally, the adjust method can be leveraged as a means of quickly applying a discount.

Properties:

• qualifierService: Every DCS discount calculator uses a Qualifier service to help with determining whether a discount is applicable in the given situation. This property points to that service.
• pricingModelProperties points to a bean that's configured with the names of a pricing model's (promotion's) properties.
• negativeAmountException is a flag indicating whether the adjust method should return negative amounts (if this property is false), or should throw an exception instead (if true)

See Also:

Qualifier, PricingModelProperties

Field Summary

protected static int	AMOUNT_INCREASE_TYPE Integer representation of an Amount Increase adjustment
protected static int	AMOUNT_OFF_TYPE Integer representation of an Amount Off discount
static java.lang.String	CLASS_VERSION Class version string
protected static int	FIXED_PRICE_TYPE Integer representation of a Fixed Price discount
protected static int	ILLEGAL_TYPE Integer representation of an illegal discount type.
protected PromotionTools	mPromotionTools Utility service to help with processing promotion items
protected static int	PERCENT_OFF_TYPE Integer representation of a Percent Off discount

Fields inherited from class atg.nucleus.GenericService

SERVICE_INFO_KEY

Fields inherited from interface atg.nucleus.logging.TraceApplicationLogging

DEFAULT_LOG_TRACE_STATUS

Fields inherited from interface atg.nucleus.logging.ApplicationLogging

DEFAULT_LOG_DEBUG_STATUS, DEFAULT_LOG_ERROR_STATUS, DEFAULT_LOG_INFO_STATUS, DEFAULT_LOG_WARNING_STATUS

Constructor Summary

DiscountCalculatorService()
Constructs a new DiscountCalculatorService

Method Summary

protected double	adjust(double pAmount, double pAdjuster, java.lang.String pDiscountType, java.lang.String pId) Returns the input pAmount adjusted by the input pAdjuster in the manner specified by pDiscountType.
protected double	adjustAmount(double pAmount, double pAdjuster, java.lang.String pDiscountType)
protected double	getAdjuster(RepositoryItem pPricingModel, java.util.Map pExtraParameters) Determines the amount of adjustment to apply.
protected java.lang.String	getDiscountType(RepositoryItem pPricingModel, java.util.Map pExtraParameters) Determines the discount type to apply.
protected int	getDiscountType(java.lang.String pDiscountType) Returns the int discount type for the string discount type provided.
PricingModelProperties	getPricingModelProperties() Get property PricingModelProperties
PromotionTools	getPromotionTools() Get property PromotionTools
Qualifier	getQualifierService() Get property QualifierService
protected Qualifier	getQualifierService(RepositoryItem pPricingModel, java.util.Map pExtraParameters) Gets the Qualifier service this calculator should use to process promotions.
boolean	isNegativeAmountException() Get property negativeAmountException.
void	setNegativeAmountException(boolean pNegativeAmountException)
void	setPricingModelProperties(PricingModelProperties pPricingModelProperties) Set property PricingModelProperties
void	setPromotionTools(PromotionTools pPromotionTools) Set property PromotionTools
void	setQualifierService(Qualifier pQualifierService) Set property QualifierService

Methods inherited from class atg.nucleus.GenericService

addLogListener, createAdminServlet, doStartService, doStopService, getAbsoluteName, getAdminServlet, getAdminServletOutputStreamEncoding, getLoggingForVlogging, getLogListenerCount, getLogListeners, getName, getNameContext, getNucleus, getRoot, getServiceConfiguration, getServiceInfo, isAdminServletUseServletOutputStream, isLoggingDebug, isLoggingError, isLoggingInfo, isLoggingTrace, isLoggingWarning, isRunning, logDebug, logDebug, logDebug, logError, logError, logError, logInfo, logInfo, logInfo, logTrace, logTrace, logTrace, logWarning, logWarning, logWarning, nameContextElementBound, nameContextElementUnbound, removeLogListener, reResolveThis, resolveName, resolveName, resolveName, resolveName, sendLogEvent, setAdminServletOutputStreamEncoding, setAdminServletUseServletOutputStream, setLoggingDebug, setLoggingError, setLoggingInfo, setLoggingTrace, setLoggingWarning, setNucleus, setServiceInfo, startService, stopService

Methods inherited from class atg.nucleus.logging.VariableArgumentApplicationLoggingImpl

vlogDebug, vlogDebug, vlogDebug, vlogDebug, vlogDebugTrace, vlogError, vlogError, vlogError, vlogError, vlogInfo, vlogInfo, vlogInfo, vlogInfo, vlogTrace, vlogTrace, vlogTrace, vlogTrace, vlogWarning, vlogWarning, vlogWarning, vlogWarning

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

ILLEGAL_TYPE

protected static final int ILLEGAL_TYPE

Integer representation of an illegal discount type. An illegal type is defined as being not one of the valid types below

See Also:

Constant Field Values

AMOUNT_OFF_TYPE

protected static final int AMOUNT_OFF_TYPE

Integer representation of an Amount Off discount

See Also:

Constant Field Values

PERCENT_OFF_TYPE

protected static final int PERCENT_OFF_TYPE

Integer representation of a Percent Off discount

See Also:

Constant Field Values

FIXED_PRICE_TYPE

protected static final int FIXED_PRICE_TYPE

Integer representation of a Fixed Price discount

See Also:

Constant Field Values

AMOUNT_INCREASE_TYPE

protected static final int AMOUNT_INCREASE_TYPE

Integer representation of an Amount Increase adjustment

See Also:

Constant Field Values

mPromotionTools

protected PromotionTools mPromotionTools

Utility service to help with processing promotion items

Constructor Detail

DiscountCalculatorService

public DiscountCalculatorService()

Constructs a new DiscountCalculatorService

Method Detail

setQualifierService

public void setQualifierService(Qualifier pQualifierService)

Set property QualifierService

Parameters:

pQualifierService - new value to set

getQualifierService

public Qualifier getQualifierService()

Get property QualifierService

Returns:

property QualifierService

setPromotionTools

public void setPromotionTools(PromotionTools pPromotionTools)

Set property PromotionTools

Parameters:

pPromotionTools - new value to set

getPromotionTools

public PromotionTools getPromotionTools()

Get property PromotionTools

Returns:

property PromotionTools

setPricingModelProperties

public void setPricingModelProperties(PricingModelProperties pPricingModelProperties)

Set property PricingModelProperties

Parameters:

pPricingModelProperties - new value to set

getPricingModelProperties

public PricingModelProperties getPricingModelProperties()

Get property PricingModelProperties

Returns:

PricingModelProperties

setNegativeAmountException

public void setNegativeAmountException(boolean pNegativeAmountException)

isNegativeAmountException

public boolean isNegativeAmountException()

Get property negativeAmountException. If negativeAmountException is true and a discount causes the amount to be negative throw an exception, otherwise log a warning message and set the amount to 0.0. The default is false

Returns:

property NegativeAmountException

getDiscountType

protected int getDiscountType(java.lang.String pDiscountType)

Returns the int discount type for the string discount type provided.

Parameters:

pDiscountType -

Returns:

int discount type

See Also:

FIXED_PRICE_TYPE, AMOUNT_OFF_TYPE, PERCENT_OFF_TYPE, AMOUNT_INCREASE_TYPE

adjust

protected double adjust(double pAmount,
                        double pAdjuster,
                        java.lang.String pDiscountType,
                        java.lang.String pId)
                 throws PricingException

Returns the input pAmount adjusted by the input pAdjuster in the manner specified by pDiscountType. For example:

If pAmount is 30, pAdjuster is 10, and pDiscountType is "amountOff", then the amount 30 will have the fixed amount 10 subtracted from it to produce a result of 20.

Parameters:

pAmount - The amount to adjust

pAdjuster - The adjustment parameter, used according to the pDiscountType

pDiscountType - The manner in which pAmount should be adjusted by pAdjuster.

pId - An identifier to associate with this operation if an expception is thrown or a warning logged

Returns:

The adjusted amount

Throws:

PricingException - if there was a problem finding the adjusted price.

adjustAmount

protected double adjustAmount(double pAmount,
                              double pAdjuster,
                              java.lang.String pDiscountType)
                       throws PricingException

Throws:

PricingException

getAdjuster

protected double getAdjuster(RepositoryItem pPricingModel,
                             java.util.Map pExtraParameters)
                      throws PricingException

Determines the amount of adjustment to apply. First checks for a discount structure in the extra parameters map. If found then uses it's adjuster otherwise tries to get the adjuster from the pricing model.

Parameters:

pPricingModel - RepositoryItem pricing model

pExtraParameters - Map of optional extra parameters, may be null

Returns:

double adjuster to use

Throws:

PricingException - if the method fails to get a valid double adjuster

getDiscountType

protected java.lang.String getDiscountType(RepositoryItem pPricingModel,
                                           java.util.Map pExtraParameters)
                                    throws PricingException

Determines the discount type to apply. First checks for a discount structure in the extra parameters map. If found then uses it's discount type otherwise tries to get the discount type from the pricing model.

Parameters:

pPricingModel - RepositoryItem pricing model

pExtraParameters - Map of optional extra parameters

Returns:

String discount type to use

Throws:

PricingException - if the method fails to determine a valid discount type.

getQualifierService

protected Qualifier getQualifierService(RepositoryItem pPricingModel,
                                        java.util.Map pExtraParameters)

Gets the Qualifier service this calculator should use to process promotions.

Parameters:

pPricingModel -

pExtraParameters -

Returns:

See Also:

PromotionTools.getQualifierService(RepositoryItem, Map, Qualifier)