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User Guide
The information contained in this section applies to IBM WebSphere Commerce Version 7.0.0.9 and Feautre Pack 8. The documentation also applies to all subsequent releases and modifications until otherwise indicated in new editions.
Developing
The topics in the Developing section describe tasks performed by an application developer.
Controller layer
The Controller layer is the conductor of operations for a request. It controls the transaction scope and manages the session related information for the request. The controller first dispatches to a command and then calls the appropriate view processing logic to render the response.
Integrating with back-end systems and external applications
External systems integration is a key feature of the WebSphere Commerce solution. In WebSphere Commerce business logic is enabled for integration and built-in adapters and interfaces are provided for common integration points. Additionally, the WebSphere Commerce integration solution leverages integration standards by using various IBM connectivity solutions.
Order and quote capture integration
The Order and Quote Capture Integration provides an open and extensible framework that supports outbound integration of WebSphere Commerce with a generic external system.
Order and quote capture integration flows
This section describes the message flows involved in the Order and quote capture integration framework when customers browse the catalog, create a shopping cart and submit an order or a quote to the external system, or view the details for orders and quotes submitted by them in the external system.
Catalog browse flow
This section describes the message flows between WebSphere Commerce and the external system when a customer browses the catalog.

WebSphere Commerce Enterprise

Catalog browse flow

This section describes the message flows between WebSphere Commerce and the external system when a customer browses the catalog.

Following are the series of actions involved in browsing the catalog after a customer logs in to the WebSphere Commerce storefront, browses different categories of products, and requests product details:

The WebSphere Commerce storefront calls WebSphere Commerce to retrieve inventory availability information. If the inventory information is available in WebSphere Commerce cache, it is displayed to the customer; otherwise GetInventoryAvailability call is made to the external system to retrieve the inventory availability value for a specific product.
The WebSphere Commerce storefront calls WebSphere Commerce to retrieve the offer price for a product. If the offer price is available in WebSphere Commerce cache, it is displayed to the customer; otherwise GetPriceList call is made to the external system to retrieve the offer price value for a specific product.

The following diagram shows the catalog browse message flow between WebSphere Commerce and an .

Catalog browse flow