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Re: [equinox-dev] Service component deployment fails into a running Equinox application

I would open a bug against Equinox->Compendium (at
https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Equinox).  This sounds
like a bug and it would be helpful if you could provide your testcase
attached to the bug.

Thanks.

Tom




|------------>
| From:      |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |Csaba Szucs <csaba.szucs@xxxxxxxxx>                                                                                                               |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| To:        |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |Equinox development mailing list <equinox-dev@xxxxxxxxxxx>,                                                                                       |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Date:      |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |02/08/2012 05:28 AM                                                                                                                               |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Subject:   |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |Re: [equinox-dev] Service component deployment fails into a running Equinox application                                                           |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|





Hello,

No, I do not, but I also tried it with that without any success. Nor do I
with the 'refresh' Equinox console command. I always get the same exception
stack...

Actually what I try to do is to provide a proof-of-concept Equinox
application that is dynamically/at-runtime extendable (through service
provider components) without the need to stop/restart the base application.
But it's really strange that I don't have any problem with my bundles in
Apache Felix and SCR.

Perhaps do you know some other working solution for the requirement?

Many thanks, Csaba.


2012/2/8 Alex Blewitt <alex.blewitt@xxxxxxxxx>
  Do you have an optional import for the package name?

  If you do, and that bundle starts first, then it won't be wired to the
  package. If you start up the bundle containing the package first, then
  start up the provider, it will resolve the list of optional imports. Once
  started, even if an optional package is added later it's not added to the
  existing running bundle's package list. If you do a 'refresh' on the
  service provider, does the problem go away?

  Alex

  On 8 Feb 2012, at 09:38, Csaba Szucs wrote:

  > Hello Guys,
  >
  > I have an Equinox OSGi application using Declarative Services with 3
  plugins:
  > -a service interface plugin
  > -a service provider component
  > -a service consumer component (cardinality: 0..n, policy: dynamic)
  >
  > Framework is launched.
  > id    State Bundle
  > 0     ACTIVE org.eclipse.osgi_3.8.0.v20110908-1857
  > 3     ACTIVE osgi.example.service.consumer_1.0.0.qualifier
  > 4     ACTIVE org.eclipse.osgi.services_3.3.0.v20110711-1243
  > 5     ACTIVE org.eclipse.equinox.util_1.0.300.v20110502
  > 6     ACTIVE org.eclipse.equinox.ds_1.3.100.v20110705
  > 10    ACTIVE osgi.example.service_interface_1.0.0.qualifier
  > 11    ACTIVE osgi.example.service.implementation_1.0.0.qualifier
  >
  > In case the application is launched, the service consumer is triggered.
  >
  > But in case the service provider is installed and started only after
  the application has launched, SCR fails to load service implementation
  class. See exception stack below!
  >
  > What is the problem with this runtime/post-application deployment of
  the service component?
  >
  > Please note:
  > With Apache Felix and SCR, there is no problem with the runtime
  deployment at all.
  >
  > Many thanks, Csaba.
  >
  > Framework is launched.
  > id    State Bundle
  > 0     ACTIVE org.eclipse.osgi_3.8.0.v20110908-1857
  > 3     ACTIVE osgi.example.service.consumer_1.0.0.qualifier
  > 4     ACTIVE org.eclipse.osgi.services_3.3.0.v20110711-1243
  > 5     ACTIVE org.eclipse.equinox.util_1.0.300.v20110502
  > 6     ACTIVE org.eclipse.equinox.ds_1.3.100.v20110705
  > 10    ACTIVE osgi.example.service_interface_1.0.0.qualifier
  >
  > osgi> install
  file:/home/csaba/eclipse_distros/Indigo/workspace/osgi.example.service.implementation

  > Bundle id is 11.
  >
  > id    State Bundle
  > 11    INSTALLED osgi.example.service.implementation_1.0.0.qualifier
  >
  > osgi> start 11
  >
  > Here SCR throws an exception:
  >
  >
  > !SESSION 2012-02-06 21:01:12.378
  -----------------------------------------------
  > eclipse.buildId=unknown
  > java.version=1.6.0_20
  > java.vendor=Sun Microsystems Inc.
  > BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
  > Command-line arguments: -dev
  file:/home/csaba/eclipse_distros/Indigo/workspace/.metadata/.plugins/org.eclipse.pde.core/New_configuration
 (1)/dev.properties -os linux -ws gtk -arch x86 -consoleLog -console
  -consolelog
  >
  > !ENTRY org.eclipse.equinox.ds 4 0 2012-02-06 21:03:11.214
  > !MESSAGE Exception occurred while creating new instance of component
  Component[
  > name = osgi.example.service.implementation
  > activate = activate
  > deactivate = deactivate
  > modified =
  > configuration-policy = optional
  > factory = null
  > autoenable = true
  > immediate = false
  > implementation = osgi.example.service.implementation.ServiceImpl
  > state = Unsatisfied
  > properties =
  > serviceFactory = false
  > serviceInterface = [osgi.example.service_interface.Service]
  > references = null
  > located in bundle = osgi.example.service.implementation_1.0.0.qualifier
  [13]
  > ]
  > !STACK 0
  > java.lang.ClassNotFoundException:
  osgi.example.service.implementation.ServiceImpl
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal
  (BundleLoader.java:513)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:429)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:417)
  > at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass
  (DefaultClassLoader.java:107)
  > at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
  > at org.eclipse.osgi.internal.loader.BundleLoader.loadClass
  (BundleLoader.java:345)
  > at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass
  (BundleHost.java:229)
  > at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass
  (AbstractBundle.java:1208)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance
  (ServiceComponent.java:480)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.createInstance
  (ServiceComponentProp.java:271)
  > at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build
  (ServiceComponentProp.java:332)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent
  (InstanceProcess.java:588)
  > at org.eclipse.equinox.internal.ds.ServiceReg.getService
  (ServiceReg.java:53)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse$1.run
  (ServiceUse.java:141)
  > at java.security.AccessController.doPrivileged(Native Method)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse.getService
  (ServiceUse.java:139)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService
(ServiceRegistrationImpl.java:468)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService
  (ServiceRegistry.java:467)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService
  (BundleContextImpl.java:594)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.getService
  (InstanceProcess.java:686)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.getMethod
  (ComponentReference.java:111)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.bind
  (ComponentReference.java:322)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference
  (ServiceComponentProp.java:441)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.dynamicBind
  (InstanceProcess.java:415)
  > at org.eclipse.equinox.internal.ds.Resolver.getEligible
  (Resolver.java:319)
  > at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged
  (SCRManager.java:221)
  > at
  org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged
(FilteredServiceListener.java:104)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent
  (BundleContextImpl.java:861)
  > at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent
  (EventManager.java:230)
  > at
  org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous
(ListenerQueue.java:148)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged
(ServiceRegistry.java:819)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent
(ServiceRegistry.java:771)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register
(ServiceRegistrationImpl.java:130)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService
  (ServiceRegistry.java:214)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService
(BundleContextImpl.java:433)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.registerService
  (InstanceProcess.java:504)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents
  (InstanceProcess.java:259)
  > at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied
  (Resolver.java:441)
  > at org.eclipse.equinox.internal.ds.Resolver.enableComponents
  (Resolver.java:213)
  > at org.eclipse.equinox.internal.ds.SCRManager.performWork
  (SCRManager.java:800)
  > at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch
  (SCRManager.java:767)
  > at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
  > at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run
  (Executor.java:70)
  >
  > !ENTRY org.eclipse.equinox.ds 4 0 2012-02-06 21:03:11.216
  > !MESSAGE Exception occurred while creating new instance of component
  Component[
  > name = osgi.example.service.implementation
  > activate = activate
  > deactivate = deactivate
  > modified =
  > configuration-policy = optional
  > factory = null
  > autoenable = true
  > immediate = false
  > implementation = osgi.example.service.implementation.ServiceImpl
  > state = Unsatisfied
  > properties =
  > serviceFactory = false
  > serviceInterface = [osgi.example.service_interface.Service]
  > references = null
  > located in bundle = osgi.example.service.implementation_1.0.0.qualifier
  [13]
  > ]
  > !STACK 0
  > java.lang.ClassNotFoundException:
  osgi.example.service.implementation.ServiceImpl
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal
  (BundleLoader.java:513)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:429)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:417)
  > at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass
  (DefaultClassLoader.java:107)
  > at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
  > at org.eclipse.osgi.internal.loader.BundleLoader.loadClass
  (BundleLoader.java:345)
  > at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass
  (BundleHost.java:229)
  > at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass
  (AbstractBundle.java:1208)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance
  (ServiceComponent.java:480)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.createInstance
  (ServiceComponentProp.java:271)
  > at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build
  (ServiceComponentProp.java:332)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent
  (InstanceProcess.java:588)
  > at org.eclipse.equinox.internal.ds.ServiceReg.getService
  (ServiceReg.java:53)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse$1.run
  (ServiceUse.java:141)
  > at java.security.AccessController.doPrivileged(Native Method)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse.getService
  (ServiceUse.java:139)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService
(ServiceRegistrationImpl.java:468)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService
  (ServiceRegistry.java:467)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService
  (BundleContextImpl.java:594)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.getService
  (InstanceProcess.java:686)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.getMethod
  (ComponentReference.java:111)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.bind
  (ComponentReference.java:322)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference
  (ServiceComponentProp.java:441)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.dynamicBind
  (InstanceProcess.java:415)
  > at org.eclipse.equinox.internal.ds.Resolver.getEligible
  (Resolver.java:319)
  > at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged
  (SCRManager.java:221)
  > at
  org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged
(FilteredServiceListener.java:104)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent
  (BundleContextImpl.java:861)
  > at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent
  (EventManager.java:230)
  > at
  org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous
(ListenerQueue.java:148)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged
(ServiceRegistry.java:819)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent
(ServiceRegistry.java:771)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register
(ServiceRegistrationImpl.java:130)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService
  (ServiceRegistry.java:214)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService
(BundleContextImpl.java:433)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.registerService
  (InstanceProcess.java:504)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents
  (InstanceProcess.java:259)
  > at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied
  (Resolver.java:441)
  > at org.eclipse.equinox.internal.ds.Resolver.enableComponents
  (Resolver.java:213)
  > at org.eclipse.equinox.internal.ds.SCRManager.performWork
  (SCRManager.java:800)
  > at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch
  (SCRManager.java:767)
  > at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
  > at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run
  (Executor.java:70)
  >
  > !ENTRY org.eclipse.osgi 4 0 2012-02-06 21:03:11.220
  > !MESSAGE An unexpected runtime error has occurred.
  > !STACK 0
  > org.osgi.service.component.ComponentException: Exception occurred while
  creating new instance of component Component[
  > name = osgi.example.service.implementation
  > activate = activate
  > deactivate = deactivate
  > modified =
  > configuration-policy = optional
  > factory = null
  > autoenable = true
  > immediate = false
  > implementation = osgi.example.service.implementation.ServiceImpl
  > state = Unsatisfied
  > properties =
  > serviceFactory = false
  > serviceInterface = [osgi.example.service_interface.Service]
  > references = null
  > located in bundle = osgi.example.service.implementation_1.0.0.qualifier
  [13]
  > ]
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance
  (ServiceComponent.java:482)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.createInstance
  (ServiceComponentProp.java:271)
  > at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build
  (ServiceComponentProp.java:332)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent
  (InstanceProcess.java:588)
  > at org.eclipse.equinox.internal.ds.ServiceReg.getService
  (ServiceReg.java:53)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse$1.run
  (ServiceUse.java:141)
  > at java.security.AccessController.doPrivileged(Native Method)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse.getService
  (ServiceUse.java:139)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService
(ServiceRegistrationImpl.java:468)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService
  (ServiceRegistry.java:467)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService
  (BundleContextImpl.java:594)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.getService
  (InstanceProcess.java:686)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.getMethod
  (ComponentReference.java:111)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.bind
  (ComponentReference.java:322)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference
  (ServiceComponentProp.java:441)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.dynamicBind
  (InstanceProcess.java:415)
  > at org.eclipse.equinox.internal.ds.Resolver.getEligible
  (Resolver.java:319)
  > at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged
  (SCRManager.java:221)
  > at
  org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged
(FilteredServiceListener.java:104)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent
  (BundleContextImpl.java:861)
  > at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent
  (EventManager.java:230)
  > at
  org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous
(ListenerQueue.java:148)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged
(ServiceRegistry.java:819)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent
(ServiceRegistry.java:771)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register
(ServiceRegistrationImpl.java:130)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService
  (ServiceRegistry.java:214)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService
(BundleContextImpl.java:433)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.registerService
  (InstanceProcess.java:504)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents
  (InstanceProcess.java:259)
  > at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied
  (Resolver.java:441)
  > at org.eclipse.equinox.internal.ds.Resolver.enableComponents
  (Resolver.java:213)
  > at org.eclipse.equinox.internal.ds.SCRManager.performWork
  (SCRManager.java:800)
  > at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch
  (SCRManager.java:767)
  > at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
  > at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run
  (Executor.java:70)
  > Caused by: java.lang.ClassNotFoundException:
  osgi.example.service.implementation.ServiceImpl
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal
  (BundleLoader.java:513)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:429)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:417)
  > at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass
  (DefaultClassLoader.java:107)
  > at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
  > at org.eclipse.osgi.internal.loader.BundleLoader.loadClass
  (BundleLoader.java:345)
  > at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass
  (BundleHost.java:229)
  > at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass
  (AbstractBundle.java:1208)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance
  (ServiceComponent.java:480)
  > ... 34 more
  >
  > !ENTRY osgi.example.service.implementation 4 0 2012-02-06 21:03:11.223
  > !MESSAGE FrameworkEvent ERROR
  > !STACK 0
  > org.osgi.framework.ServiceException: Exception in
  org.eclipse.equinox.internal.ds.ServiceReg.getService()
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse.getService
  (ServiceUse.java:151)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService
(ServiceRegistrationImpl.java:468)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService
  (ServiceRegistry.java:467)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.getService
  (BundleContextImpl.java:594)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.getService
  (InstanceProcess.java:686)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.getMethod
  (ComponentReference.java:111)
  > at org.eclipse.equinox.internal.ds.model.ComponentReference.bind
  (ComponentReference.java:322)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference
  (ServiceComponentProp.java:441)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.dynamicBind
  (InstanceProcess.java:415)
  > at org.eclipse.equinox.internal.ds.Resolver.getEligible
  (Resolver.java:319)
  > at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged
  (SCRManager.java:221)
  > at
  org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged
(FilteredServiceListener.java:104)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent
  (BundleContextImpl.java:861)
  > at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent
  (EventManager.java:230)
  > at
  org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous
(ListenerQueue.java:148)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged
(ServiceRegistry.java:819)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent
(ServiceRegistry.java:771)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register
(ServiceRegistrationImpl.java:130)
  > at
  org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService
  (ServiceRegistry.java:214)
  > at
  org.eclipse.osgi.framework.internal.core.BundleContextImpl.registerService
(BundleContextImpl.java:433)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.registerService
  (InstanceProcess.java:504)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents
  (InstanceProcess.java:259)
  > at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied
  (Resolver.java:441)
  > at org.eclipse.equinox.internal.ds.Resolver.enableComponents
  (Resolver.java:213)
  > at org.eclipse.equinox.internal.ds.SCRManager.performWork
  (SCRManager.java:800)
  > at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch
  (SCRManager.java:767)
  > at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
  > at org.eclipse.equinox.internal.util.impl.tpt.threadpool.Executor.run
  (Executor.java:70)
  > Caused by: org.osgi.service.component.ComponentException: Exception
  occurred while creating new instance of component Component[
  > name = osgi.example.service.implementation
  > activate = activate
  > deactivate = deactivate
  > modified =
  > configuration-policy = optional
  > factory = null
  > autoenable = true
  > immediate = false
  > implementation = osgi.example.service.implementation.ServiceImpl
  > state = Unsatisfied
  > properties =
  > serviceFactory = false
  > serviceInterface = [osgi.example.service_interface.Service]
  > references = null
  > located in bundle = osgi.example.service.implementation_1.0.0.qualifier
  [13]
  > ]
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance
  (ServiceComponent.java:482)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponentProp.createInstance
  (ServiceComponentProp.java:271)
  > at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build
  (ServiceComponentProp.java:332)
  > at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent
  (InstanceProcess.java:588)
  > at org.eclipse.equinox.internal.ds.ServiceReg.getService
  (ServiceReg.java:53)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse$1.run
  (ServiceUse.java:141)
  > at java.security.AccessController.doPrivileged(Native Method)
  > at org.eclipse.osgi.internal.serviceregistry.ServiceUse.getService
  (ServiceUse.java:139)
  > ... 27 more
  > Caused by: java.lang.ClassNotFoundException:
  osgi.example.service.implementation.ServiceImpl
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal
  (BundleLoader.java:513)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:429)
  > at org.eclipse.osgi.internal.loader.BundleLoader.findClass
  (BundleLoader.java:417)
  > at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass
  (DefaultClassLoader.java:107)
  > at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
  > at org.eclipse.osgi.internal.loader.BundleLoader.loadClass
  (BundleLoader.java:345)
  > at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass
  (BundleHost.java:229)
  > at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass
  (AbstractBundle.java:1208)
  > at
  org.eclipse.equinox.internal.ds.model.ServiceComponent.createInstance
  (ServiceComponent.java:480)
  > ... 34 more
  >
  > !ENTRY osgi.example.service.consumer 2 0 2012-02-06 21:03:11.228
  > !MESSAGE [SCR] Could not get the service object relevant to the
  reference. One possible reason is a circularity problem. Another possible
  reason is that BundleContext.getService() returns null.
  > Details:
  > Problematic reference = Reference[name = Service, interface =
  osgi.example.service_interface.Service, policy = dynamic, cardinality =
  0..n, target = null, bind = setService, unbind = unsetService]
  > of service component = osgi.example.service.consumer
  > component implementation class =
  osgi.example.service.consumer.ServiceConsumer
  > located in bundle with symbolic name = osgi.example.service.consumer
  > bundle location = initial@reference:
  file:../../../../osgi.example.service.consumer/
  >
  > !ENTRY osgi.example.service.consumer 2 0 2012-02-06 21:03:11.229
  > !MESSAGE [SCR] ComponentReference.bind(): bind method 'setService' is
  not found or it is not accessible!
  > Details:
  > Problematic reference = Reference[name = Service, interface =
  osgi.example.service_interface.Service, policy = dynamic, cardinality =
  0..n, target = null, bind = setService, unbind = unsetService]
  > of service component = osgi.example.service.consumer
  > component implementation class =
  osgi.example.service.consumer.ServiceConsumer
  > located in bundle with symbolic name = osgi.example.service.consumer
  > bundle location = initial@reference:
  file:../../../../osgi.example.service.consumer/
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