This is my current Architecture

1.    SiApp is an OSGI project which contains two interfaces EchoService and BounceService.

2.    SIExampleService is an OSGI project :: contains EchoServiceImpl which is the implementaion class of the Interface : EchoService and this is configured via blueprint

          <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">

                 <bean id="echoservice"

                          class="com.clink.services.echo.EchoServiceImpl">

                  </bean>

                   <service ref="echoservice"

                          interface="com.clink.services.interfaces.EchoService" />

          </blueprint>

3.  SIExampleService2 is an OSGI project :: contains BounceServiceImpl which is the implementaion class of the Interface :  BounceService

     BounceServiceImpl also contains a reference to EchoService which is configured via blueprint

          <blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0">

                  <reference id="echoservice" 

                           interface="com.clink.services.interfaces.EchoService" />

                  <bean id="bounceservice"

                          class="com.clink.services.bounce.BounceServiceImpl">

                          <property name="echoService" ref="echoservice" />

                  </bean>

                  <service ref="bounceservice"

                          interface="com.clink.services.interfaces.BounceService" />

         </blueprint>

4.    SIWeb is a Webpp which contains a servlet-- MainServlet

       MainServlet contains instances of both EchoService and BounceService

        These are configured via BundleContext.

              private EchoService echoService;

              private BounceService bounceService;

              @Resource

              private BundleContext context;

              ServiceReference sref = context.getServiceReference(EchoService.class.getName());

              echoService = (EchoService)context.getService(sref);

For the Main servlet we use both the instances and print it out

        String message = echoService.quack("ECHO");

        message = message + bounceService.ping("BOUNCE");

        PrintWriter out = response.getWriter();

        out.println(message);

        out.close();

The output is ECHO--ECHOBOUNCE

BounceServiceImpl internally again calls EchoService as mentioned in point no 3 , hence ECHOBOUNCE

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Issue : 1

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Now If I change the implementaion class EchoServiceImpl inside SIExampleService to add something ,build it, deploy it start the bundle

When I run MainServlet again I get the output as

ECHO--ECHOCHANGEBOUNCE

The new bundle of SIExampleService is only reflected for SIExampleService2 called via bounceService.ping("BOUNCE")

and not in the instance of MainServlet which is called via echoService.quack("ECHO");

Shouldn't it auomatically get reflected in both the scenarios?

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Issue : 2

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Now If I change the implementaion class BounceServiceImpl inside SIExampleService2 , I get the following Exception

      org.osgi.service.blueprint.container.ServiceUnavailableException: The Blueprint container is being or has been destroyed

      org.apache.aries.blueprint.container.ReferenceRecipe.getService(ReferenceRecipe.java:197)

      org.apache.aries.blueprint.container.ReferenceRecipe.access$000(ReferenceRecipe.java:50)

      org.apache.aries.blueprint.container.ReferenceRecipe$ServiceDispatcher.call(ReferenceRecipe.java:227)

      org.apache.aries.proxy.impl.ProxyHandler$1.invoke(ProxyHandler.java:54)

      org.apache.aries.proxy.impl.ProxyHandler.invoke(ProxyHandler.java:119)

      $Proxy13.quack(Unknown Source)

      com.clink.services.bounce.BounceServiceImpl.ping(BounceServiceImpl.java:25)

      com.clink.servlet.MainServlet.doGet(MainServlet.java:54)

      javax.servlet.http.HttpServlet.service(HttpServlet.java:734)

      javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

      org.jboss.weld.servlet.ConversationPropagationFilter.doFilter(ConversationPropagationFilter.java:62).

I did not find anything about this Exception ,This exception goes away if I remove the reference in the config.xml to echoService

Please do help me out in these two issue

Thanks in Advance