Well, now further up the learning curve. I was mislead by finding some examples of External Resource impl which implemented SharedResourceObject, but did not implement Resource.
More careful reading of the code shows it assumes that resource impls *are* instances of Resource. So- back to work... -Marshall On 10/20/2016 10:58 AM, Marshall Schor wrote: > I had an incorrect understanding of the UIMA model for this, and confused an > instance of Resource with an instance of its implementation. > > A Resource in UIMA is an Interface implemented by framework code parts that > are > specializations for the many kinds of resources managed by UIMA. > > These resources are created from Resource Specifiers using produceResource. > > One aspect of Resource instances is that they contain a reference to an > "implementation" - another Java class, which is *not* an instance of Resource. > > This aspect is only present in some kinds of resources. For External > Resources, > the descriptor for this, and its internal Java class > (ExternalResourceDescription) have an element, "implementationName", which is > name of the Java class implementing the resource. This class doesn't > implement > the Resource API. > > I incorrectly switched several parts of ResourceManager_impl from Object to > Resource based on my misunderstanding, and will now revert that. > > -Marshall > >