DATAREST-1397 - Polishing.

Removed the redeclaration of hasCorsConfigurationSource(…) in RepositoryRestHandlerMapping as it already inherits the one from BasePathAwareRestHandlerMapping.

Removed @Override on BasePathAwareRestHandlerMapping.hasCorsConfigurationSource(…) as we need to compile against Spring 5.1, which doesn't expose the method. Downgrades from Spring HATEOAS 1.0 API usage in tests.

spring-data-rest-webmvc/src/main/java/org/springframework/data/rest/webmvc/BasePathAwareHandlerMapping.java

@@ -112,11 +112,12 @@ public class BasePathAwareHandlerMapping extends RequestMappingHandlerMapping {
 		return super.lookupHandlerMethod(lookupPath, new CustomAcceptHeaderHttpServletRequest(request, mediaTypes));
 	}
 
-	/*
-	 * (non-Javadoc)
+	/**
+	 * No {@code @Override} as the method is only available in Spring 5.2, but needed to make CORS work in general on it.
+	 *
 	 * @see org.springframework.web.servlet.handler.AbstractHandlerMapping#hasCorsConfigurationSource(java.lang.Object)
+	 * @see https://github.com/spring-projects/spring-framework/issues/22273
 	 */
-	@Override
 	protected boolean hasCorsConfigurationSource(Object handler) {
 		return true;
 	}

spring-data-rest-webmvc/src/main/java/org/springframework/data/rest/webmvc/RepositoryRestHandlerMapping.java

@@ -190,15 +190,6 @@ public class RepositoryRestHandlerMapping extends BasePathAwareHandlerMapping {
 		return AnnotationUtils.findAnnotation(type, RepositoryRestController.class) != null;
 	}
 
-	/*
-	 * (non-Javadoc)
-	 * @see org.springframework.web.servlet.handler.AbstractHandlerMapping#hasCorsConfigurationSource(java.lang.Object)
-	 */
-	@Override
-	protected boolean hasCorsConfigurationSource(Object handler) {
-		return true;
-	}
-
 	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.web.servlet.handler.AbstractHandlerMapping#extendInterceptors(java.util.List)