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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 Get services
The Business Object Document Get processing pattern describes the design pattern used to searching for and retrieve data.
Adding business logic to a search expression
You can add additional business logic to an existing search expression by extending the Fetch command implementation.

Adding business logic to a search expression

You can add additional business logic to an existing search expression by extending the Fetch command implementation.

Procedure

Determine the XPath key for the search expression to add additional business logic in the Fetch command. If this is for all searches, then use the default fetch implementation. The XPath key can be determined by looking at the command registry for the configuration of the FetchNounNameCmd interface.
Extend the Fetch command implementation and in the performExecute() method, add the custom business logic. Then call super.performExecute() to fetch the data or directly call the persistence layer.
Update the command registry to use this extended implementation.