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

OK, this is not a bug.

I assume you are launching equinox outside of the IDE and then attempting
to install project folders from one of your workspaces into the framework.
When equinox is launched from the IDE (PDE) then extra options are passed
to equinox to inform it about development class paths of each project in
your workspace.  You could try to use the -dev option or set the osgi.dev
configuration property depending on how you launch equinox (i.e.
osgi.dev=bin would add bin to the class path of every bundle, or you can
use a URL to point to a properties file that contains symbolic name keys
and class path values for each bundle you want to install from your
workspace).

Tom




|------------>
| From:      |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |Csaba Szucs <csaba.szucs@xxxxxxxxx>                                                                                                               |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| To:        |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |Equinox development mailing list <equinox-dev@xxxxxxxxxxx>,                                                                                       |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Date:      |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |02/09/2012 03:29 AM                                                                                                                               |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
|------------>
| Subject:   |
|------------>
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |Re: [equinox-dev] Service component deployment fails into a running Equinox application                                                           |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|





Hello Guys,

Sorry, it was my mistake.

I realized that I did install the service provider plugin as a workspace
plugin (including the bin folder) and not as a jar file. If I install and
start the service provider as a plugin JAR file, everything is ok.

So it does not work like this:
osgi>install
file:/home/csaba/eclipse_distros/Indigo/workspace/osgi.example.service.implementation


But it does work like this
osgi>install
file:/home/csaba/tmp/plugins/osgi.example.service.implementation_1.0.0_20120209.jar


So I think, this is not a bug...

Thanks, anyway!
Csaba


2012/2/8 Thomas Watson <tjwatson@xxxxxxxxxx>
  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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