Hi, The issue comes form the asynchronous start of iPOJO. When you create your instance, not everything is available.
I’ve several question: Why are you using the iPOJO API to declare your type and instance ? Can’t you just use the annotations ? In that case it will just create everything smoothly. If you really need / want to use the API, don’t create the instance like you do, but expose an instance declaration: http://felix.apache.org/documentation/subprojects/apache-felix-ipojo/apache-felix-ipojo-userguide/ipojo-advanced-topics/ipojo-factory-service.html#deleting-instances. The declaration waits until the factory is valid to create the instance. Regards, Clement On 21 janv. 2014, at 19:47, Zaid Jamal Saeed Al Mahmoud <[email protected]> wrote: > I am trying to learn how to use Felix iPOJO API to create components > dynamically. > > I have a simple bundle with the following files: > > 1- HelloService.java (Contains a Service Interface). > > /* > > * @author zaid almahmoud > > * > > */ > > package helloipojo.service; > > > > public interface HelloService > > { > > > > public void sayHello(); > > > > } > > 2- Its implementation HelloServiceImpl.java: > > package helloipojo; > > > > import helloipojo.service.HelloService; > > > > > > public class HelloServiceImpl implements HelloService{ > > > > @Override > > public void sayHello() { > > > > System.out.println("Hello iPojo!"); > > > > } > > > > > > } > > 3- Activator.java : > > package helloipojo; > > > > import org.osgi.framework.BundleActivator; > > import org.osgi.framework.BundleContext; > > > > > > public class Activator implements BundleActivator { > > > > > > public void start(BundleContext context) throws Exception { > > > > > > System.out.println("Bundle Started!"); > > > > > > } > > public void stop(BundleContext context) throws Exception { > > > > context = null; > > System.out.println("Bundle Stopped!"); > > > > > > } > > > > } > > MANIFEST.MF: > > Manifest-Version: 1.0 > > Bundle-ManifestVersion: 2 > > Bundle-Name: HelloIPojo > > Bundle-SymbolicName: HelloIPojo > > Bundle-Version: 1.0.0.qualifier > > Bundle-Activator: helloipojo.Activator > > Bundle-RequiredExecutionEnvironment: JavaSE-1.6 > > Import-Package: org.osgi.framework > > In my application, I start Felix framework and deploy the following bundles: > > iPOJO (core) > > iPOJO Composite > > iPOJO API > > According to this<http://felix.apache.org/site/apache-felix-ipojo-api.html> > source. > > Next, I install my bundle, and instantiate the component. Below is my class: > > import java.util.ArrayList; > > import java.util.HashMap; > > import java.util.List; > > import java.util.Map; > > > > import org.apache.felix.framework.Felix; > > import org.apache.felix.framework.util.FelixConstants; > > import org.osgi.framework.Bundle; > > import org.osgi.framework.BundleContext; > > import org.osgi.framework.BundleException; > > import org.osgi.framework.Constants; > > import org.osgi.framework.ServiceRegistration; > > import org.apache.felix.ipojo.ComponentInstance; > > import org.apache.felix.ipojo.ConfigurationException; > > import org.apache.felix.ipojo.MissingHandlerException; > > import org.apache.felix.ipojo.UnacceptableConfiguration; > > import org.apache.felix.ipojo.api.ComponentType; > > import org.apache.felix.ipojo.api.PrimitiveComponentType; > > import org.apache.felix.ipojo.api.Service; > > > > public class HostApplication > > { > > private HostActivator m_activator = null; > > private Felix m_felix = null; > > > > > > public HostApplication() > > { > > // Create a configuration property map. > > Map config = new HashMap(); > > config.put(Constants.FRAMEWORK_STORAGE_CLEAN, > Constants.FRAMEWORK_STORAGE_CLEAN_ONFIRSTINIT); > > // Create host activator; > > m_activator = new HostActivator(); > > List list = new ArrayList(); > > list.add(m_activator); > > > > config.put(FelixConstants.SYSTEMBUNDLE_ACTIVATORS_PROP, list); > > > > try > > { > > // Now create an instance of the framework with > > // our configuration properties. > > m_felix = new Felix(config); > > // Now start Felix instance. > > m_felix.start(); > > } > > catch (Exception ex) > > { > > System.err.println("Could not create framework: " + ex); > > ex.printStackTrace(); > > } > > > > > > // Register the application's context as an OSGi service! > > BundleContext bundleContext1 = m_felix.getBundleContext(); > > > > > > System.out.println("6"); > > > > try { > > > > //starting ipojo required bundles > > Bundle coreBundle = > bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Dropbox\\EBTIC\\ADERE\\feasibility-codes\\ipojo\\ipojo-distribution-1.11.0\\bundle\\org.apache.felix.ipojo-1.6.2.jar"); > > coreBundle.start(); > > if(coreBundle.getState()== coreBundle.ACTIVE) > > System.out.println("Core Bundle is Active!"); > > > > Bundle apiBundle = > bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Dropbox\\EBTIC\\ADERE\\feasibility-codes\\ipojo\\ipojo-distribution-1.11.0\\bundle\\org.apache.felix.ipojo.api-1.6.0.jar"); > > apiBundle.start(); > > if(apiBundle.getState()== apiBundle.ACTIVE) > > System.out.println("API Bundle is Active!"); > > > > > > Bundle compositeBundle = > bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Dropbox\\EBTIC\\ADERE\\feasibility-codes\\ipojo\\ipojo-distribution-1.11.0\\bundle\\org.apache.felix.ipojo.composite-1.6.0.jar"); > > compositeBundle.start(); > > if(compositeBundle.getState()== compositeBundle.ACTIVE) > > System.out.println("Composite Bundle is Active!"); > > > > > > //HERE INSTALLING AND STARTING MY BUNDLE!! > > Bundle b = > bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Desktop\\plugins\\HelloIPojo_1.0.0.201401211340.jar"); > > b.start(); > > > > try { > > > > ComponentType type = new PrimitiveComponentType() > > .setBundleContext(b.getBundleContext()) > > .setComponentTypeName("hello.type") > > .setClassName("helloipojo.HelloServiceImpl") > > .setImmediate(true); > > type.start(); > > > > ComponentInstance instance = type.createInstance(); > > > > > > > > } > > > > catch (UnacceptableConfiguration > > | MissingHandlerException | ConfigurationException > e) { > > // TODO Auto-generated catch block > > e.printStackTrace(); > > } // Create the instance > > > > > > > > > > > > > > > > System.out.println("done starting bundles!"); > > > > > > } catch (BundleException e) { > > > > e.printStackTrace(); > > > > System.out.println("Not done!"); > > } > > > > > > > > //shutdownApplication(); > > > > } > > > > public Bundle[] getInstalledBundles() > > { > > // Use the system bundle activator to gain external > > // access to the set of installed bundles. > > return m_activator.getBundles(); > > } > > > > public void shutdownApplication() > > { > > // Shut down the felix framework when stopping the > > // host application. > > try { > > m_felix.stop(); > > } catch (BundleException e1) { > > // TODO Auto-generated catch block > > e1.printStackTrace(); > > } > > try { > > m_felix.waitForStop(0); > > } catch (InterruptedException e) { > > // TODO Auto-generated catch block > > e.printStackTrace(); > > } > > } > > } > > When I run my application, it shows the following output (with the error at > the end): > > 6 > > Core Bundle is Active! > > API Bundle is Active! > > Composite Bundle is Active! > > Bundle Started! > > Exception in thread "main" java.lang.IllegalStateException: The factory > associated with the component type is invalid (not started or missing > handlers) > > at > org.apache.felix.ipojo.api.ComponentType.ensureFactory(ComponentType.java:189) > > at > org.apache.felix.ipojo.api.ComponentType.ensureAndGetFactory(ComponentType.java:177) > > at > org.apache.felix.ipojo.api.ComponentType.createInstance(ComponentType.java:79) > > at HostApplication.<init>(HostApplication.java:109) > > at Embedder.main(Embedder.java:11) > > Where did I go wrong? Thanks. > > Update > > I could see that I am missing 2 handlers. I knew that by adding the following > two lines: > > System.out.println(type.getFactory().getRequiredHandlers()); > > System.out.println(type.getFactory().getMissingHandlers()); > > The output of the above two lines is: > > [org.apache.felix.ipojo:architecture, org.apache.felix.ipojo:callback] > > [org.apache.felix.ipojo:architecture, org.apache.felix.ipojo:callback] > > I also tried: > > type.getFactory().createComponentInstance(new Properties()); > > then I got: > > org.apache.felix.ipojo.MissingHandlerException: Missing handlers : > org.apache.felix.ipojo:architecture org.apache.felix.ipojo:callback > > I don't know why these handlers are missing. I tried to add them, but could > not figure out the right syntax. Any help? Thanks. > > > Zaid >
