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From "Pierre De Rop (JIRA)" <j...@apache.org>
Subject [jira] Created: (FELIX-1922) issue with configuration policy=require and with factory components
Date Sun, 06 Dec 2009 19:27:18 GMT
issue with configuration policy=require and with factory components
-------------------------------------------------------------------

                 Key: FELIX-1922
                 URL: https://issues.apache.org/jira/browse/FELIX-1922
             Project: Felix
          Issue Type: Bug
          Components: Declarative Services (SCR)
    Affects Versions: scr-1.2.0
         Environment: linux fc10, jdk1.5, jdk.1.6
            Reporter: Pierre De Rop
            Priority: Minor


This issue is related to the following dev post: -> http://www.mail-archive.com/dev@felix.apache.org/msg14167.html

There are two components that comes into play: 

1) The first one (EnglishDictionary) has a configuration-policy="require" parameter and a
factory="true" parameter:

<?xml version='1.0' encoding='utf-8'?>
<component name='EnglishDictionary' xmlns='http://www.osgi.org/xmlns/scr/v1.1.0' factory='true'
configuration-policy='require' modified='updated'>
 <implementation class='com.alcatel_lucent.samples.scr.dictionary.english.EnglishDictionary'/>
 <service>
   <provide interface='com.alcatel_lucent.samples.scr.dictionary.DictionaryService'/>
 </service>
</component> 

The EnglishDictionary parameter has actually a CM Configuration which is required before activation:
that is why it uses configuration-policy='require'.

2) The second one (EnglishDictionaryFactory) is a factory component that is meant to instantiate
the EnglishDictionary component.:

<?xml version='1.0' encoding='utf-8'?>
<component name='EnglishDictionaryFactory'>
 <implementation class='com.alcatel_lucent.samples.scr.dictionary.english.EnglishDictionaryFactory'/>
 <reference name='bind' interface='org.osgi.service.component.ComponentFactory' bind='bind'
unbind='unbind' target='(component.name=EnglishDictionary)'/>
</component> 


The issue takes place when the EnglishDictionaryFactory component tries to instantiate the
EnglishDictionary like this:

class EnglishDictionaryFactory {
  public void bind(ComponentFactory factory) {
    factory.newInstance(new Hashtable());
  } 
}

-> The newInstance raises the following exception:

org.osgi.service.component.ComponentException: Failed activating component
       at org.apache.felix.scr.impl.manager.ComponentFactoryImpl.newInstance(ComponentFactoryImpl.java:118)
       at com.alcatel_lucent.samples.scr.dictionary.english.EnglishDictionaryFactory.bind(EnglishDictionaryFactory.java:19)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:213)
       at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:38)
       at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:542)
       at org.apache.felix.scr.impl.helper.BaseMethod$NotResolved.invoke(BaseMethod.java:500)
       at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:434)
       at org.apache.felix.scr.impl.manager.DependencyManager.invokeBindMethod(DependencyManager.java:997)
       at org.apache.felix.scr.impl.manager.DependencyManager.bind(DependencyManager.java:908)
       at org.apache.felix.scr.impl.manager.DependencyManager.open(DependencyManager.java:832)
       at org.apache.felix.scr.impl.manager.ImmediateComponentManager.createImplementationObject(ImmediateComponentManager.java:200)
       at org.apache.felix.scr.impl.manager.ImmediateComponentManager.createComponent(ImmediateComponentManager.java:118)
       at org.apache.felix.scr.impl.manager.AbstractComponentManager$Unsatisfied.activate(AbstractComponentManager.java:982)
       at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:297)
       at org.apache.felix.scr.impl.manager.AbstractComponentManager$1.doRun(AbstractComponentManager.java:137)
       at org.apache.felix.scr.impl.ComponentActivatorTask.run(ComponentActivatorTask.java:67)
       at org.apache.felix.scr.impl.ComponentActorThread.run(ComponentActorThread.java:96)
       at java.lang.Thread.run(Thread.java:619)


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