atg.commerce.pricing.PricingEngine is the main interface for interacting with the atg.commerce.pricing package. Extensions of this interface describe objects that calculate prices for different types of Core Commerce object. The PricingEngine interface itself contains only one method, getPricingModels, which extracts a collection of promotions from an input profile. Different PricingEngine implementations take a range of information to calculate prices for their specific classes of object.
Core Commerce provides four extensions of the main PricingEngine interface. Each extension provides a price for a different object type:
atg.commerce.pricing.ItemPricingEngine
Provides a price foratg.commerce.order.CommerceItemobjects.atg.commerce.pricing.OrderPricingEngine
Provides a price foratg.commerce.order.Orderobjects.atg.commerce.pricing.ShippingPricingEngine
Provides a price foratg.commerce.order.ShippingGroupobjects.atg.commerce.pricing.TaxPricingEngine
Determines tax foratg.commerce.order.Orderobjects.
The pricing context is defined by the method’s input parameters, which typically include the following:
The objects to be priced.
The promotions to apply to the prices.
The customer’s profile.
The locale for which the price is being generated.
A hash table of extra parameters, which exists so that new APIs do not have to be created to accommodate additional pricing context information. One important use for extra parameters is to pass in the site ID, if you want to override the current site context.
These engine interfaces are described in the sections that follow; the calculators are described in the Core Commerce Pricing Calculators chapter.
