Eclipse fragment not resoving classes in parent plugin

Question

Running in Linux on Eclipse Mars.2. I am using a targetplatform so that the plugins are mostly from Kepler.2, due to one of my plugins being 3rd party from that era.

I have a fragment that will not compile in Eclipse because lots of classes do not resolve. I see no reason why this should be as fragment.xml and MANIFEST.MF in the fragment look fine. Of course the host fragment is unaware of the fragment.

build.properties of the fragment

source.. = src/
output.. = bin/
bin.includes = META-INF/,\
           .,\
           fragment.xml,\
           icons/

fragment.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<fragment>
   <extension
         point="org.drools.eclipse.menueventhandler">
      <handler
            class="com.example.drools.eclipse.events.menu.BPMN2EditorMenuEventHandler">
      </handler>
   </extension>
     <extension
           point="org.drools.eclipse.editparteventhandler">
        <handler
              class="com.example.drools.eclipse.events.editpart.ETLPartEventHandler"></handler>
     </extension>
</fragment>

MANIFEST.MF

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Test Drools Eclipse
Bundle-SymbolicName: com.example.ui.drools.eclipse;singleton:=true
Bundle-Version: 1.0.0.qualifier
Bundle-Vendor: Test
Fragment-Host: org.drools.eclipse;bundle-version="5.2.0.YR"
Bundle-RequiredExecutionEnvironment: JavaSE-1.7
Require-Bundle: org.eclipse.birt.report.designer.ui.ide

Any ideas?

Answer 1

This I think, was a consequence of refactoring a package name in the host plugin. It looks like it did not refactor the name in the visible packages, but just removed it. I am guessing here as previously it compiled fine and one of the few changes I made was this refactoring of package name. When I added back the 2 packages as being visible it compiled again.