fix comments

Author: M-Busk

policy-extension/src/main/java/org/eclipse/edc/extension/possiblepolicy/NegotiationContractExpiryCheckFunction.java

@@ -93,7 +93,7 @@ public boolean evaluate(Operator operator, Object rightValue, R rule, PolicyCont
             }
 
             context.reportProblem(format("Unsupported right-value, expected either an ISO-8061 String or a expression matching '%s', but got '%s'",
-                ContractExpiryCheckFunction.CONTRACT_EXPIRY_EVALUATION_KEY, rightValueStr));
+                EXPRESSION_REGEX, rightValueStr));
         } catch (NullPointerException | DateTimeParseException ex) {
             monitor.warning(format("Exception during time policy evaluation: %s %s", ex.getClass().getCanonicalName(), ex.getMessage()));
             context.reportProblem(ex.getMessage());

policy-extension/src/main/java/org/eclipse/edc/extension/possiblepolicy/PossiblePolicyExtension.java

@@ -25,6 +25,7 @@
 import org.eclipse.edc.spi.system.ServiceExtension;
 import org.eclipse.edc.spi.system.ServiceExtensionContext;
 
+import static org.eclipse.edc.connector.contract.spi.validation.ContractValidationService.TRANSFER_SCOPE;
 import static org.eclipse.edc.policy.model.OdrlNamespace.ODRL_SCHEMA;
 
 import java.util.Map;
@@ -57,18 +58,28 @@ public String name() {
     public void initialize(ServiceExtensionContext context) {
         var monitor = context.getMonitor();
 
-        // register use action for both negotiation and transfer scope
+        // register use action for both negotiation scope
         ruleBindingRegistry.bind("use", NEGOTIATION_SCOPE);
         ruleBindingRegistry.bind("USE", NEGOTIATION_SCOPE);
         ruleBindingRegistry.bind(ODRL_SCHEMA + "use", NEGOTIATION_SCOPE);
 
-        // iterate over claim constraint key map and register functions for negotiation and transfer scope
+        ruleBindingRegistry.bind("use", TRANSFER_SCOPE);
+        ruleBindingRegistry.bind("USE", TRANSFER_SCOPE);
+        ruleBindingRegistry.bind(ODRL_SCHEMA + "use", TRANSFER_SCOPE);
+
+        // iterate over claim constraint key map and register functions for negotiation scope
         for (Map.Entry<String, String> entry : CONSTRAINT_KEY_MAP.entrySet()) {
             ruleBindingRegistry.bind(entry.getKey(), NEGOTIATION_SCOPE);
             policyEngine.registerFunction(NEGOTIATION_SCOPE, Permission.class, entry.getKey(),
                 new ClientClaimConstraintFunction<>(monitor, entry.getValue(), VERBOSE));
             policyEngine.registerFunction(NEGOTIATION_SCOPE, Prohibition.class, entry.getKey(),
                 new ClientClaimConstraintFunction<>(monitor, entry.getValue(), VERBOSE));
+
+            ruleBindingRegistry.bind(entry.getKey(), TRANSFER_SCOPE);
+            policyEngine.registerFunction(TRANSFER_SCOPE, Permission.class, entry.getKey(),
+                new ClientClaimConstraintFunction<>(monitor, entry.getValue(), VERBOSE));
+            policyEngine.registerFunction(TRANSFER_SCOPE, Prohibition.class, entry.getKey(),
+                new ClientClaimConstraintFunction<>(monitor, entry.getValue(), VERBOSE));
         }
 
         // also register reimplementation of standard edc contract expiry check function for negotiation scope