Details
Major Description
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()
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).