WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile

908 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile

25.3 Packaging an SCA application for deployment

Figure 25-7 shows the files that are contained in the sample SCA application package, as

shown in the Enterprise Explorer view in IBM Rational Application Developer.

Figure 25-7 SCA application package

The composites are created by the developer as part of the application development process.

The developer adds components to the composite, writes the implementation code for the

components, and adds the interface files. These development activities are independent of

deployment activities. The contribution file is related to packaging for deployment and must be

created to deploy the application.

Tip: SCA applications are displayed in the Enterprise Explorer view of the IBM Rational

Application Developer with features in a manner that makes working with the components

easy. The SCA Content section (highlighted in Figure 25-7) contains entries for the

contributions and composites, making them easily visible and selectable to open for

editing. This is simply a structural view of the files. The SCA contribution file, SCA

composite, and SCA composite diagram files (all located beneath the META-INF folder in

Figure 25-7) are not normally visible as raw files.

We changed the view properties for the Enterprise Explorer view to show them to you in

this format. So, you see these files twice, once by file name and once as an element under

the SCA Content folder. Double-clicking SCA 1.0 Content  Contributions 

sca-contribution opens the same file that opens if you double-clicked META-INF 

sca-contribution.xml. The same is true for the composite.

To use these settings, click the View menu. Click Customize view. Click the Filter tab, and

clear SCA 1.0 resources.

Implementation file

SCA contribution file

SCA composite file

Interface file

View menu

Chapter 25. Working with SCA applications 909

You can see the composite and components in Figure 25-8. Selecting any of the components

in the composite shows the properties in the lower window. In Figure 25-8, the

AtomFeedFetcher component is selected, and in the properties window, you can see the

implementation class listed.

Figure 25-8 SupportFeeds composite

25.3.1 Creating the contribution

Before you can export the project for deployment, you need to create the contribution file. This

is a simple process using the IBM Rational Application Developer.

910 WebSphere Application Server V8.5 Administration and Configuration Guide for the Full Profile

Complete the following steps to create the contribution file:

1. In the Enterprise Explorer, expand SCA 1.0 Content. Right-click Contributions, and click

New  SCA 1.0 Contribution. (Figure 25-9).

Figure 25-9 Contribution file creation

2. In the New Contribution Wizard window, select the composites to be deployed

(Figure 25-10), and click Finish.

Figure 25-10 Add composites to the contribution

Chapter 25. Working with SCA applications 911

25.3.2 Exporting the SCA application for deployment

To export the contribution as an SCA archive file:

1. Right-click the project, and select Export, as shown in Figure 25-11.

Figure 25-11 Exporting an SCA application

2. In the Export dialog box, select Service Component Architecture 1.0  SCA Archive

File, as shown in Figure 25-12 and then click Next.

Figure 25-12 Selecting the archive file