Implementing and Exposing a Background Callable Object

Purpose

In Guided Procedures (GP) you can encapsulate any function that does not expose a user interface as a callable object for background execution. For example, if you need to implement a certain logic that should remain hidden from the end user, you can create a Java class that is executed transparently in background mode at runtime.

In this tutorial, you will learn how you implement a simple callable object that retrieves user details by a given user ID.

Prerequisites

• You have basic knowledge of Java programming.
• You are familiar with the SAP NetWeaver Development Infrastructure.

  More information: Using the Development and Production Infrastructure .

Process Flow

The implementation of a background callable object to the point where it is available for use in a process goes through the following phases:

1. You create and configure a Java development component (DC).
2. You implement your background callable object in the above component.
3. You create a Java Enterprise Application and deploy it to the SAP Web Application Server.
4. You expose the class as a callable object in the GP design time.
5. Finally, you test and activate the object.

Process Flow

You can now start creating your Java DCproject.

More information: Creating a Java Development Component .