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Compatibility problem of dependencies on com.google.common.* between EMF Compare and Xtext [message #1818671]

Sun, 22 December 2019 19:07

Dominique Blouin

Messages: 1
Registered: December 2019

Junior Member

I have an OSGI application that uses EMF compare 3.3.8 and XText 2.19 on Eclipse Modeling Tools 2019-09. When I execute the application I get the error below.

The source of the problem seems to be an inconsistency between the required dependencies on com.google.common.* of EMF Compare and Xtext. EMF Compare requires a version between 15 and 22 while Xtext requires at least 27. Therefore two versions of the classes are loaded leading to the error below. When I modify EMF compare to remove the upper version requirement it solves the problem. Is there a reason why EMF Compare requires no more than version 22 of com.google.common.*?

Thanks for your help.

java.lang.LinkageError: loader constraint violation: when resolving method "fr.tpt.aadl.ramses.generation.utils.GeneratorUtils$NoBAComparisonScope.setResourceContentFilter(Lcom/google/common/base/Predicate;)V" the class loader (instance of org/eclipse/osgi/internal/loader/EquinoxClassLoader) of the current class, fr/tpt/aadl/ramses/generation/utils/GeneratorUtils$NoBAComparisonScope, and the class loader (instance of org/eclipse/osgi/internal/loader/EquinoxClassLoader) for the method's defining class, org/eclipse/emf/compare/scope/FilterComparisonScope, have different Class objects for the type com/google/common/base/Predicate used in the signature

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