Fragments and Split Packages

[Pierre De Rop]

Hello community; I am facing an issue concerning Felix, Split packages and Fragment bundles. Here is my use case: 1/ We have some bundles with (unfortunately) some esoteric "split packages" which are not supported by OSGI. For instance:      b1.jar exports package "com.p" with com.p.C1      b2.jar exports package "com.p" with com.p.C2 and:      class com.p.C1 instantiates the com.p.C2 2/ In order to solve this problem, we could incorporate b1.jar and b2.jar into one "big.jar" with "Bundle-ClassPath: b1.jar, b2.jar", but we can't dot that (for some reasons not exposed here ...). 3/ Now, I am trying to use Fragments in order to solve the split package issue. It would be great if someone could have a look to the following sample code because it does not work with Felix 1.0.1, but it works properly with Knopflerfish and Equinox ! Here is my sample code: the fraghost.jar loads a class from frag1.jar, which itself loads a class from frag2.jar ... Bundle "fraghost.jar": MANIFEST for fraghost.jar: ------------------------------------     Manifest-Version: 1.0     Created-By: 1.5.0_10 (Sun Microsystems Inc.)     Bundle-Name: FragHost     Bundle-SymbolicName: FragHost     Bundle-ManifestVersion: 2     Bundle-Version: 1.0.0     Bundle-Activator: com.test.fraghost.FragHost     Import-Package: org.osgi.framework Class com.test.fraghost.FragHost from fraghost.jar: ----------------------------------------------------------------    public class FragHost implements BundleActivator {      public void start(BundleContext context) throws Exception {        out.println("FragHost is instantiating com.test.frag.Frag1 from frag1.jar ...");        Runnable frag1 = (Runnable) getClass().getClassLoader().loadClass("com.test.frag.Frag1").newInstance();        frag1.run();      }      public void stop(BundleContext context) throws Exception {        out.println("Stopping FragHost");      }    } Bundle "frag1.jar": MANIFEST for frag1.jar: --------------------------------- Manifest-Version: 1.0 Created-By: 1.5.0_10 (Sun Microsystems Inc.) Bundle-Name: Frag1 Bundle-SymbolicName: Frag1 Bundle-ManifestVersion: 2 Fragment-Host: FragHost Class com/test/frag/Frag1.java from frag1.jar: --------------------------------------------------------- public class Frag1 implements Runnable {   public Frag1() {     out.println("In Frag1 constructor");   }   public void run() {     try {       out.println("Frag1 is instantiating Frag2 ...");       Runnable frag2 = (Runnable) Class.forName("com.test.frag.Frag2").newInstance();       frag2.run();     } catch (Throwable t) {       t.printStackTrace();     }   } } Bundle "frag2.jar": MANIFEST for frag2.jar: --------------------------------- Manifest-Version: 1.0 Created-By: 1.5.0_10 (Sun Microsystems Inc.) Bundle-Name: Frag2 Bundle-SymbolicName: Frag2 Bundle-ManifestVersion: 2 Fragment-Host: FragHost Class com/test/frag/Frag2.java from frag2.jar: --------------------------------------------------------- public class Frag2 implements Runnable {   public Frag2() {     out.println("In Frag2 constructor");   }   public void run() {     try {       out.println("In Frag2.run ...");     } catch (Throwable t) {       t.printStackTrace();     }   } } Running these bundles with Felix 1.0.1, I have the following exception: FragHost is instantiating com.test.frag.Frag1 from frag1.jar ... ERROR: Error starting file:bundle/fraghost.jar (org.osgi.framework.BundleException: Activator start error.) java.lang.ClassNotFoundException: *** Class 'com.test.frag.Frag1' was not found. Bundle 6 does not import package 'com.test.frag', nor is the package exported by any other bundle or available from the system class loader. ***         at org.apache.felix.framework.searchpolicy.R4SearchPolicyCore.findClass(R4SearchPolicyCore.java:184)         at org.apache.felix.framework.searchpolicy.R4SearchPolicy.findClass(R4SearchPolicy.java:45)         at org.apache.felix.framework.searchpolicy.ContentClassLoader.loadClass(ContentClassLoader.java:75)         at java.lang.ClassLoader.loadClass(ClassLoader.java:251)         at com.test.fraghost.FragHost.start(FragHost.java:13)         at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:589)         at org.apache.felix.framework.Felix._startBundle(Felix.java:1536)         at org.apache.felix.framework.Felix.startBundle(Felix.java:1470)         at org.apache.felix.framework.Felix.setFrameworkStartLevel(Felix.java:1065)         at org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:258)         at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.ClassNotFoundException: com.test.frag.Frag1         at org.apache.felix.framework.searchpolicy.R4SearchPolicyCore.findClassOrResource(R4SearchPolicyCore.java:412)         at org.apache.felix.framework.searchpolicy.R4SearchPolicyCore.findClass(R4SearchPolicyCore.java:175)         ... 10 more -> ps START LEVEL 1    ID   State         Level  Name [   0] [Active     ] [    0] System Bundle (1.0.1) [   1] [Active     ] [    1] Apache Felix Shell Service (1.0.0) [   2] [Active     ] [    1] Apache Felix Shell TUI (1.0.0) [   3] [Active     ] [    1] osgi (4.0) [   4] [Active     ] [    1] Frag1 [   5] [Active     ] [    1] Frag2 [   6] [Resolved   ] [    1] FragHost (1.0.0) Thanks for your help; Pierre.       --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]