[transformer-dev] Question about package rename scope

[jan luehe <janluehe@xxxxxxxxx>]

Is my assumption correct that in order for the transformer to be able to apply the package rename rules at https://github.com/eclipse/transformer/blob/main/org.eclipse.transformer.jakarta/src/main/resources/org/eclipse/transformer/jakarta/jakarta-renames.properties, the target packages of the renames ("newPackageName", e.g., jakarta.servlet), must already exist on the class path of the hosting app, so that the renamed references can be correctly resolved? 

For example, if the hosting app still has jakarta.servlet-api-4.0.4.jar (which provides the "old" javax.servlet) on its class path, then the rename rule from javax.servlet to jakarta.servlet will fail. 

In other words, only class references to "currentPackageName" will be renamed (e.g, "Foo implements javax.servlet.Servlet"), but not the class definitions themselves ("package javax.servlet; public interface Servlet { ... }").

Could you please confirm? Thank you!