Orders
From a cart instance, an Order can be created. The whole structure of the cart is stored in the database. Contrary to the cart, a structure that allows a great degree of freedom and is calculation optimized, the order is workflow optimized.
Design goals
Denormalization
The order itself does not depend on the catalog or the products. The line item with all of its data, as well as all calculated prices, is persisted in the database. Orders only get recalculated when triggered explicitly through the API.
Workflow dependant
The order state changes in a defined, predictable and configurable way - other state transitions are blocked.
State management
TIP
The state machines displayed in the following sections can actually be modified through the API, this is just the default setup.
During the order placement, at least three distinct state machines are started as described in the below diagrams.
These can be used to track the progress during the order process and notify the customer about the current state of the order.
The order state machine
The order transaction state machine
The order delivery state machine
