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

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

Figure 25-5 shows composites in an sca-contribution.xml file in an SCA domain.

Figure 25-5 SCA contribution

An SCA contribution is typically described in a contribution file, named sca-contribution.xml in

the META-INF directory. Example 25-1 shows the contribution file for the SupportFeeds

composition unit.

Example 25-1 Contribution file

<?xml version="1.0" encoding="UTF-8"?>

<contribution xmlns="http://www.osoa.org/xmlns/sca/1.0">

<deployable composite="ns1:SupportFeeds"

xmlns:ns1="http://itso.rad.feeds"></deployable>

</contribution>

25.2 Preparing to use the sample application

The concepts in this chapter are illustrated using the RAD8AtomFeeds sample application,

which is included with Rational Application Developer for WebSphere Software V8

Programming Guide, SG24-7835.

25.2.1 Downloading the application

To download the sample application:

1. Go to the following website:

http://www.redbooks.ibm.com/abstracts/sg247835.html?Open

2. Click the Additional Material link.

3. Click the sg247835.zip file, and select Save to save the compressed file to your computer.

4. Extract the contents of the compressed file.

The SCA artifacts are in the 7835codesolution\sca directory.

Composite

Composite

Composite

Composite

Composite

Composite

sca-contribution.xml

SCA Domain

Contribution

Chapter 25. Working with SCA applications 907

25.2.2 Importing the application to the development tool

To use the sample application for our exercise, import both files into IBM Rational Application

Developer by completing the following steps:

1. Start IBM Rational Application Developer.

2. To import the code, click File  Import and then expand the General section. Select

Existing projects into workspace. Click Next.

3. Click Browse next to the Select Archive file field, and browse to the sca directory where

you extracted the sample code. Select the RAD8AtomFeeds.zip file, and click Open.

4. Click Select All to select all projects in the file. Click Finish. If you are prompted to migrate

the workspace, accept and complete the migration wizard.

25.2.3 Completing the service definition

The last action is to make sure the interface for the composite is complete by completing the

following steps:

1. Open the composite by double-clicking SCA 1.0 Content  Composites 

http://itso.rad.feeds  SupportFeeds.

2. Click the Service icon (green arrow) in the AtomFeedFetcher component and then select

the Properties view.

3. Switch to (by clicking) the Interface tab and verify that the Interface is of type Java and

that it has the value com.ibm.itso.support.feeds.Fetcher. If not, correct the fields, and

save and close the composite.

These steps are illustrated in Figure 25-6.

Figure 25-6 Open the SupportFeeds composite

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