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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.
Web services and WebSphere Commerce
A web service is an interface that describes a collection of operations that are accessible through the network by using standardized XML messaging.
Developing the business logic layer using the BOD command framework
Business layer can be designed and programmed using the BOD programming model introduced in WebSphere Commerce Version 6 Feature Pack 3.0.1. This command framework revolves around using Business Object Documents, and the Java representation of those objects, logical service data objects.
Developing BOD Process, Change, and Sync services
Developing BOD Process, Change, and Sync services follow a common pattern.
Using the ChangeNounPart pattern to validate a noun part
Each changeable part of a noun is managed by special command type called a ChangeNounPart command. This command provides a validate() method which you can extend or override to perform your own business logic checking to decide whether the change should be performed. The part to modify, the noun that contains that part, and control parameters are all made available to the command implementation at runtime.

Using the ChangeNounPart pattern to validate a noun part

Each changeable part of a noun is managed by special command type called a ChangeNounPart command. This command provides a validate() method which you can extend or override to perform your own business logic checking to decide whether the change should be performed. The part to modify, the noun that contains that part, and control parameters are all made available to the command implementation at runtime.

Procedure

Create a Java class that extends AbstractChangeNounPartUsingBusinessObjectMediatorCmdImpl and implements the ChangeNounPart interface that is associated with the Change controller command.
Implement the validate() method if specific noun part validation is required before the noun part is changed.
Register your command implementation.