1. Business Services Development Methodology Guide
  2. Understanding Business Services

Understanding Business Services

Business services are JD Edwards EnterpriseOne Object Management Workbench (OMW) objects that are called by a published business service to accomplish a specific task. Business service classes are written in Java programming language and provide methods that access the business logic in JD Edwards EnterpriseOne for many supported business transactions, such as journal entries, exchange rates, accounts payable vouchers, inventory lookups, pricing, sales orders, and so on. A business service method can call a business function or a database operation. A utility business service performs a repeatable task and can be called by multiple business service classes.

This chapter focuses on business services that call a business function. Because many of the rules and best practices are the same for business services that call business functions and business services that call database operations, discussions in this chapter are applicable to both types of business services. However, some differences and exceptions exist, and Chapter 5, Creating a Business Service That Calls a Database Operation focuses on differences for each type of database operation.

You use wizards, which are provided by JDeveloper and the business services framework, and the Java programming language to create business service classes. If you are creating a new business service, you first create an OMW object. When you launch JDeveloper from OMW, the project should be created automatically. If the project is not created, you use the Project wizard that is provided by JDeveloper to create a project for your business service. You use the Business Service Class wizard to create a business service class that has one or more methods. A method can call a business function, a database operation, or another business service (for example, a utility business service method) to accomplish a specific task. The business services framework provides two wizards: the Create Business Function Call wizard to help you create methods that call business functions and the Create Database Call wizard to help you create methods that call database operations.

In addition to wizards, the business services framework provides a set of foundation packages that help you create a business service method. Each foundation package contains a set of interfaces and related classes. All business service classes extend from the BusinessService foundation class. The wizards that are provided by the business service framework enable you to create code that is specific for calling a business function or a database operation. Code samples, using a specific example of adding an address book record that uses AddressBook master business function, are provided throughout this chapter to demonstrate general concepts. Rules and best practices are discussed if they are applicable to the topic.

This business service class diagram shows the main business service class (AddressBookProcessor) and the internal value object class (InternalAddAddressBook) and its components:

Business service class diagram

These features are illustrated in the diagram:

  • AddressBookProcessor extends BusinessService class.

  • InternalAddAddressBook and its components extend ValueObject class.