Overview

In this sample, you create an SCA import component for invoking the module from Hello World Part 1. It is a human task component to prompt for the name information, and a business process component that invokes the first two components. This sample introduces to some capabilities (activities) of a business process and core tools that supplement the business object, interface, and mediation flow tools introduced in the Hello World Part 1 sample.

In Hello World Part 1, you built a mediation module that provides an interface to an existing web service. In Hello World Part 2, you build a business process that uses this interface.

At a conceptual level, the Hello World Part 2 sample application is composed of the following elements:

• A module named HelloWorldProcess that contains a business process that is also named HelloWorldProcess
• A human task component named HelloWorldTask
• An import named HelloWorldImport.

These elements are shown in the following figure:

A human task is a unit of work that is performed by a person. In this sample, the HelloWorldProcess business process assigns a task for completion by a person -- you!

The HelloWorldProcess business process is a long-running process, which means that it can come to a complete stop while waiting for input or instructions. The most common form of this interruption can be a human interaction or decision, but it can also due to calling a long-running asynchronous service.

In the sample, the business process receives text input that indicates the gender and then sends this text to a To-do human task that displays when prompting for username information. You can find and claim the human task in the supplied web-based user interface (that is used for working with human tasks). Then you provide the requested name information. When you are finished with the task, you complete it to send the response back to the business process. Then, the business process decides on an appropriate title string based on the gender input text. It then sends the title and name information to the service implemented by the module from the Hello World Part 1 sample. This results in a concatenated name that is prefixed by the word "Hello". This result is written to the console by using a snippet of visual Java™ code and it is returned to the waiting caller of the process.

The following figure shows what the business process for this sample looks like: