NullPointerException in Component.newComponentConfiguration when multiple component instances are bound to the same service and have the same target property about knopflerfish.org HOT 6 CLOSED

Which version of the component bundle is used?

from knopflerfish.org.

6.0.2, built from develop

from knopflerfish.org.

Also reproducible in component_all-5.0.3.jar

from knopflerfish.org.

Mike,
I think you're right in your analysis, we need to add the new id.
Could you do the following changes and re-test?

--- a/osgi/bundles/component/src/org/knopflerfish/bundle/component/Reference.java
+++ b/osgi/bundles/component/src/org/knopflerfish/bundle/component/Reference.java
@@ -314,9 +314,9 @@ class Reference implements org.apache.felix.scr.Reference
           listener = null;
           // NYI, optimize, we don't have to checkTargetChanged again
         }
-      } else if (useNoId) {
-        // No change, just make sure that ccid is registered
-        listener.addId(ccid, true);
+      } else {
+        // No change, add new ccid or replace if was NO_CCID.
+        listener.addId(ccid, useNoId);
       }
     }
     if (factoryListeners != null) {

from knopflerfish.org.

I applied the changes, and it started working a little bit better, NPE is not thrown when component instances are created for the first time, but if I then delete their configurations and create them again, NPE is thrown.
I tested it with a larger setup, ~50 components of different types with complex dependencies between them.

from knopflerfish.org.

Fixed this issue in component version 6.0.3. The new version also contains a number of other fixes related to factory configurations. I'll closes this now. If there are any other remaining problems, create a new issue.

from knopflerfish.org.