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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.
Presentation layer
WebSphere Commerce uses Java Server Pages (JSP) to implement the view layer of the Model-View-Controller (MVC) design pattern. The view layer is in charge of retrieving data from the database through the use of data beans and formatting it to meet the display requirements. The view layers determines whether the request is sent to a browser or streamed out as XML. JSP files present a clean separation between data content and presentation.
Management Center framework
The Management Center framework is the foundation for business user tooling. The business objects are defined by the individual components that make up the Management Center. The framework uses those definitions to provide all of the features that you can use to find, create, modify, and delete the defined business objects. If you plan to customize the Management Center, it is important to understand the framework and the components that make up the Management Center.
Common Management Center user interface flows
Once you are familiar with the Management Center user interface, its views, definitions, and services used, it is also useful to understand how a business user interacts with the most common elements within the Management Center, and how the Management Center framework manages each flow.
Collection list editor widget flow
You can use a collection list editor to add new collection objects to a list or to delete collection objects from a list.

Collection list editor widget flow

You can use a collection list editor to add new collection objects to a list or to delete collection objects from a list.

Use a collection list editor to display the parent objects of an object that can have multiple parent objects within a properties view. The parent objects are primary objects; their primary object definitions must have an instance of the wcfCollectionReferenceObjectDefinition class with a referenceType that matches the current object.

Here is an example of a collection list editor within a properties view, with the New, Show utilities view, and Delete icons above the table: