Shows how to create and run composites dynamically

tuscany-domain-node/DynamicTestCase.java
/**
* Shows how to create and run composites dynamically
*/
public class DynamicTestCase {

@Test
public void testInstalledContribution() throws NoSuchServiceException, NoSuchDomainException, ContributionReadException, ActivationException, ValidationException, MalformedURLException, ClassNotFoundException, IntrospectionException, IllegalArgumentException, InvocationTargetException,
IllegalAccessException {

// get the various factories that will be needed
TuscanyRuntime tuscanyRuntime = TuscanyRuntime.newInstance();
ExtensionPointRegistry extensionPoints = tuscanyRuntime.getExtensionPointRegistry();
FactoryExtensionPoint modelFactories = extensionPoints.getExtensionPoint(FactoryExtensionPoint.class);

// Create a contribution
ContributionFactory contributionFactory = modelFactories.getFactory(ContributionFactory.class);
Contribution contribution = contributionFactory.createContribution();
contribution.setURI("testContribution");
ModelResolverExtensionPoint modelResolvers = extensionPoints.getExtensionPoint(ModelResolverExtensionPoint.class);
ModelResolver modelResolver = new ExtensibleModelResolver(contribution, modelResolvers, modelFactories);
contribution.setModelResolver(modelResolver);
contribution.setClassLoader(new URLClassLoader(new URL[] {new File("src/test/resources/sample-helloworld.jar").toURI().toURL()}));

// Create a composite
AssemblyFactory assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
Composite composite = assemblyFactory.createComposite();
composite.setURI("testComposite");
composite.setName(new QName("testComposite"));

// create a component
Component component = assemblyFactory.createComponent();
component.setName("testComponent");
JavaImplementationFactory javaImplementationFactory = modelFactories.getFactory(JavaImplementationFactory.class);
JavaImplementation javaImplementation = javaImplementationFactory.createJavaImplementation(contribution.getClassLoader().loadClass("sample.HelloworldImpl"));
javaImplementation.setJavaClass(contribution.getClassLoader().loadClass("sample.HelloworldImpl"));
component.setImplementation(javaImplementation);

// add the component to the composite
composite.getComponents().add(component);

// add the composite to the contribution
contribution.addComposite(composite);

// Now run the composite with a Tuscany Node
Node node = tuscanyRuntime.createNode();
node.installContribution(contribution, null);
node.startComposite(contribution.getURI(), composite.getURI());

// test that the service has started and can be invoked
testService(node, contribution.getClassLoader());

node.stop();
tuscanyRuntime.stop();
}

private void testService(Node node, ClassLoader classLoader) throws ClassNotFoundException, NoSuchServiceException, NoSuchDomainException, IllegalArgumentException, InvocationTargetException, IllegalAccessException {
Class<?> interfaze = classLoader.loadClass("sample.Helloworld");
Object clientProxy = node.getService(interfaze, "testComponent/Helloworld");
Method m = interfaze.getMethods()[0]; // the helloworld interface just has a single method "sayHello"
Object response = m.invoke(clientProxy, new Object[] {"Ariana"});
Assert.assertEquals("Hello Ariana", response);
}

}