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From "Clement Escoffier (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (FELIX-4443) Using iPOJO API shows different behavior (works when adding a service only)
Date Fri, 07 Mar 2014 08:16:52 GMT

     [ https://issues.apache.org/jira/browse/FELIX-4443?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Clement Escoffier closed FELIX-4443.
------------------------------------


> Using iPOJO API shows different behavior (works when adding a service only)
> ---------------------------------------------------------------------------
>
>                 Key: FELIX-4443
>                 URL: https://issues.apache.org/jira/browse/FELIX-4443
>             Project: Felix
>          Issue Type: Bug
>          Components: iPOJO
>    Affects Versions: ipojo-runtime-1.11.1
>         Environment: Windows 64 Operating System, eclipse, java
>            Reporter: Zaid 
>            Assignee: Clement Escoffier
>              Labels: ipojo
>
> I am trying to use ipojo API to create a component type. I am embedding Felix framework
and I load my component bundle to the framework.
> In my bundle I have the following class:
> public class PlainHelloImpl implements PlainHello{
> 	@Override
> 	public void sayHello() {
> 		System.out.println("Plainly Hello :D");
> 		
> 	}
> 	
> 	public PlainHelloImpl()
> 	{
> 		System.out.println("in contructor");
> 	}
> 	
> 	public void start()
> 	{
> 		
> 		System.out.println("Hello, this is the plain hello component start method");
> 	}
> 	public void stop()
> 	{
> 		System.out.println("Bye, this is the plain hello component stop method");
> 	}
> }
> and below is my activator where the error occurs:
> public class Activator implements BundleActivator {
> 	
> 	    public static BundleContext bundleContext;
> 	    public void start(BundleContext context) throws Exception {
> 	    	
> 	       
> 	        System.out.println("Plain Hello iPOJO Bundle Started!");
> 	        bundleContext=context;
> 	        
> 	        
> 	        PrimitiveComponentType x= new PrimitiveComponentType()
> 	        .setBundleContext(context)
> 	        .setClassName(PlainHelloImpl.class.getName())
>                 .setValidateMethod("start")
> 	        .setInvalidateMethod("stop")
> 	        .addService(new Service()) ;
> 	        
> 	        x.start();
> 	        
> 	        ComponentInstance i = x.createInstance(); //ERROR HERE
> 	        i.start();
> 	        
> 	        
> 			System.out.println("and we are done!");
> 	        
> 	    }
> 	    public void stop(BundleContext context) throws Exception {
> 	        
> 	    	 context = null;
> 	    	 System.out.println("Plain Hello iPOJO Bundle Stopped!");
> 	    	
> 	    	
> 	    }
> 	
> }
> In my java application, I have the following code:
>     	Map config= new HashMap();
>     	
>         // 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();
>           
>                     //starting ipojo required bundles
>                     Bundle coreBundle = bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Dropbox\\feasibility-codes\\ipojo\\ipojo-distribution-1.11.0\\bundle\\org.apache.felix.ipojo-1.11.0.jar");
>                     coreBundle.start();
>                     if(coreBundle.getState()== Bundle.ACTIVE)
>                          System.out.println("Core Bundle is Active!");
>           
>                     Bundle compositeBundle = bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Dropbox\\feasibility-codes\\ipojo\\ipojo-distribution-1.11.0\\bundle\\org.apache.felix.ipojo.composite-1.6.0.jar");
>                     compositeBundle.start();
>                     if(compositeBundle.getState()== Bundle.ACTIVE)
>                         System.out.println("Composite Bundle is Active!");
>                   
>                     Bundle apiBundle = bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Dropbox\\feasibility-codes\\ipojo\\ipojo-distribution-1.11.0\\bundle\\org.apache.felix.ipojo.api-1.6.0.jar");
>                     apiBundle.start();
>                     if(apiBundle.getState()== Bundle.ACTIVE)
>                         System.out.println("API Bundle is Active!");
>                     
>                                     
>                     
>                     //HERE I start my bundle
>                     Bundle plainIPOJOBundle = bundleContext1.installBundle("file:C:\\Users\\zaid.almahmoud\\Desktop\\plugins\\Manipulated_PlainHelloiPOJO.jar");
>                     plainIPOJOBundle.start();
>                     
> As you see, at the very end, I start my bundle. This shows me the following error:
> [ERROR]  : [plainhelloipojo.PlainHelloImpl-0] createInstance -> Cannot invoke the
constructor (method not found) : plainhelloipojo.PlainHelloImpl.<init>(org.apache.felix.ipojo.InstanceManager)
> java.lang.NoSuchMethodException: plainhelloipojo.PlainHelloImpl.<init>(org.apache.felix.ipojo.InstanceManager)
> 	at java.lang.Class.getConstructor0(Class.java:2715)
> 	at java.lang.Class.getDeclaredConstructor(Class.java:1987)
> 	at org.apache.felix.ipojo.InstanceManager.createObject(InstanceManager.java:726)
> 	at org.apache.felix.ipojo.InstanceManager.getPojoObject(InstanceManager.java:923)
> 	at org.apache.felix.ipojo.util.Callback.call(Callback.java:233)
> 	at org.apache.felix.ipojo.util.Callback.call(Callback.java:193)
> 	at org.apache.felix.ipojo.handlers.lifecycle.callback.LifecycleCallback.call(LifecycleCallback.java:86)
> 	at org.apache.felix.ipojo.handlers.lifecycle.callback.LifecycleCallbackHandler.__M_stateChanged(LifecycleCallbackHandler.java:162)
> 	at org.apache.felix.ipojo.handlers.lifecycle.callback.LifecycleCallbackHandler.stateChanged(LifecycleCallbackHandler.java)
> 	at org.apache.felix.ipojo.InstanceManager.setState(InstanceManager.java:536)
> 	at org.apache.felix.ipojo.InstanceManager.start(InstanceManager.java:418)
> 	at org.apache.felix.ipojo.ComponentFactory.createInstance(ComponentFactory.java:179)
> 	at org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:319)
> 	at org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:240)
> 	at org.apache.felix.ipojo.api.ComponentType.createInstance(ComponentType.java:79)
> 	at plainhelloipojo.Activator.start(Activator.java:38)
> 	at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:645)
> 	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2146)
> 	at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
> 	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:955)
> 	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:942)
> 	at embedder.HostApplication.<init>(HostApplication.java:82)
> 	at embedder.Embedder.main(Embedder.java:12)
> [ERROR] plainhelloipojo.PlainHelloImpl : Cannot create a POJO instance, the POJO constructor
cannot be found
> Exception in thread "main" org.osgi.framework.BundleException: Activator start error
in bundle PlainHelloiPOJO [4].
> 	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2196)
> 	at org.apache.felix.framework.Felix.startBundle(Felix.java:2064)
> 	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:955)
> 	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:942)
> 	at embedder.HostApplication.<init>(HostApplication.java:82)
> 	at embedder.Embedder.main(Embedder.java:12)
> Caused by: org.apache.felix.ipojo.ConfigurationException: The configuration is not correct
for the type plainhelloipojo.PlainHelloImpl : Cannot create a POJO instance, the POJO constructor
cannot be found
> 	at org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:328)
> 	at org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:240)
> 	at org.apache.felix.ipojo.api.ComponentType.createInstance(ComponentType.java:79)
> 	at plainhelloipojo.Activator.start(Activator.java:38)
> 	at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:645)
> 	at org.apache.felix.framework.Felix.activateBundle(Felix.java:2146)
> 	... 5 more
> Caused by: org.apache.felix.ipojo.ConfigurationException: Cannot create a POJO instance,
the POJO constructor cannot be found
> 	at org.apache.felix.ipojo.ComponentFactory.createInstance(ComponentFactory.java:191)
> 	at org.apache.felix.ipojo.IPojoFactory.createComponentInstance(IPojoFactory.java:319)
> 	... 10 more
> Caused by: java.lang.RuntimeException: Cannot create a POJO instance, the POJO constructor
cannot be found
> 	at org.apache.felix.ipojo.InstanceManager.createObject(InstanceManager.java:766)
> 	at org.apache.felix.ipojo.InstanceManager.getPojoObject(InstanceManager.java:923)
> 	at org.apache.felix.ipojo.util.Callback.call(Callback.java:233)
> 	at org.apache.felix.ipojo.util.Callback.call(Callback.java:193)
> 	at org.apache.felix.ipojo.handlers.lifecycle.callback.LifecycleCallback.call(LifecycleCallback.java:86)
> 	at org.apache.felix.ipojo.handlers.lifecycle.callback.LifecycleCallbackHandler.__M_stateChanged(LifecycleCallbackHandler.java:162)
> 	at org.apache.felix.ipojo.handlers.lifecycle.callback.LifecycleCallbackHandler.stateChanged(LifecycleCallbackHandler.java)
> 	at org.apache.felix.ipojo.InstanceManager.setState(InstanceManager.java:536)
> 	at org.apache.felix.ipojo.InstanceManager.start(InstanceManager.java:418)
> 	at org.apache.felix.ipojo.ComponentFactory.createInstance(ComponentFactory.java:179)
> 	... 11 more
> Caused by: java.lang.NoSuchMethodException: plainhelloipojo.PlainHelloImpl.<init>(org.apache.felix.ipojo.InstanceManager)
> 	at java.lang.Class.getConstructor0(Class.java:2715)
> 	at java.lang.Class.getDeclaredConstructor(Class.java:1987)
> 	at org.apache.felix.ipojo.InstanceManager.createObject(InstanceManager.java:726)
> 	... 20 more
> Now, here's the weird behavior:
> This works fine (no errors):
> 	        PrimitiveComponentType x= new PrimitiveComponentType()
> 	        .setBundleContext(context)
> 	        .setClassName(PlainHelloImpl.class.getName())
> 	        .addService(new Service()) // Provide the Foo service
> 	       ;
> 	        
> 	        x.start();
> 	        
> 	        ComponentInstance i = x.createInstance();
> 	        i.start();
> This however doesn't work (shows the error):
> 	        PrimitiveComponentType x= new PrimitiveComponentType()
> 	        .setBundleContext(context)
> 	        .setClassName(PlainHelloImpl.class.getName())
> 	        .setValidateMethod("start")
> 	        .setInvalidateMethod("stop")
> 	        .addService(new Service()) // Provide the Foo service
> 	       ;
> 	        
> 	        x.start();
> 	        
> 	        ComponentInstance i = x.createInstance();
> 	        i.start();
> This also shows the error:
> 	        PrimitiveComponentType x= new PrimitiveComponentType()
> 	        .setBundleContext(context)
> 	        .setClassName(PlainHelloImpl.class.getName())
> 	       ;
> 	        
> 	        x.start();
> 	        
> 	        ComponentInstance i = x.createInstance();
> 	        i.start();
> and many other scenarios show the error. The only case that does not show my error is
when I provide a component name, bundle context, and service (and nothing else). 



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