Ok, so here is the analysis. There are two independent reasons why the code does not work.
== Unexpected used of "bindExternalResource" == I did not foresee using "bindExternalResource" for binding a nested resource to a resource. So instead of resourceA = createExternalResourceDescription(ResourceA.class,"http://resource.org/a";); resourceB = createExternalResourceDescription(ResourceB.class,"http://resource.org/b";); bindExternalResource(resourceB, ResourceA.RESOURCE_A_KEY, resourceA); You need to write: resourceA = createExternalResourceDescription(ResourceA.class,"http://resource.org/a";); resourceB = createExternalResourceDescription(ResourceB.class,"http://resource.org/b";, ResourceA.RESOURCE_A_KEY, resourceA); The reason here is that part of the magic that makes nesting work happens in createExternalResourceDescription and is missed if bindExternalResource is used. Still, bindExternalResource shouldn't fail with an NPE here - it should give a reasonable message. And it should behave consistently, so produce the same error no matter when it is called in the code - or it should just work as expected... == createExternalResourceDescription for SharedResourceObjects missing code == The proper code for handling nested resources is missing from the createExternalResourceDescription variant used to with SharedResourceObjects. This is an oversight and will be fixed. I've done a local fix and will commit that soon. Btw. any reason you are still on UIMA 2.6.0? I am considering to do the next uimaFIT release based on 2.7.0 (and Java 1.6). -- Richard
