From e4d640e99e6987dfda9b1dcfdc7b925524d9e844 Mon Sep 17 00:00:00 2001
From: Joachim Van Herwegen <joachimvh@gmail.com>
Date: Wed, 26 Aug 2026 15:13:06 +0200
Subject: [PATCH] Use isAnyOf and lists for multiple purposes

---
 controller/src/classes/utils/PolicyInterpreter.ts | 10 ++++++++--
 loama/src/components/policy-view/RuleForm.vue     | 10 ++++------
 2 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/controller/src/classes/utils/PolicyInterpreter.ts b/controller/src/classes/utils/PolicyInterpreter.ts
index b6802a9..b3509f7 100644
--- a/controller/src/classes/utils/PolicyInterpreter.ts
+++ b/controller/src/classes/utils/PolicyInterpreter.ts
@@ -1,6 +1,6 @@
 import { getLoggedInIdentifier } from './Authentication';
 import { Constraint, ISpecificTargetInfo, Policy, Rule } from "../../types/modules";
-import { DataFactory, Store, Writer } from "n3";
+import { DataFactory, Store, Writer, Quad_Object } from 'n3';
 import { ODRL } from "./PolicyParser";
 
 const { namedNode, literal } = DataFactory;
@@ -178,6 +178,7 @@ export class PolicyInterpreter {
                 }
 
                 if (constraint.rightOperand && constraint.rightOperand.length > 0) {
+                    const rightValues: Quad_Object[] = [];
                     for (const operand of constraint.rightOperand) {
                         let rightValue;
 
@@ -199,7 +200,12 @@ export class PolicyInterpreter {
                             rightValue = literal(cleanValue);
                         }
 
-                        writer.addQuad(constraintNode, namedNode(`${ODRL}rightOperand`), rightValue);
+                        rightValues.push(rightValue);
+                    }
+                    if (rightValues.length === 1) {
+                        writer.addQuad(constraintNode, namedNode(`${ODRL}rightOperand`), rightValues[0]);
+                    } else {
+                        writer.addQuad(constraintNode, namedNode(`${ODRL}rightOperand`), writer.list(rightValues));
                     }
                 }
             }
diff --git a/loama/src/components/policy-view/RuleForm.vue b/loama/src/components/policy-view/RuleForm.vue
index a41ec26..1f19622 100644
--- a/loama/src/components/policy-view/RuleForm.vue
+++ b/loama/src/components/policy-view/RuleForm.vue
@@ -242,12 +242,10 @@ const handleSave = async () => {
 
       const constraints: Constraint[] = [];
 
-        form.purposes.forEach(purpose => {
-            constraints.push({
-                leftOperand: 'http://www.w3.org/ns/odrl/2/purpose',
-                operator: 'http://www.w3.org/ns/odrl/2/eq',
-                rightOperand: [purpose]
-            });
+        constraints.push({
+          leftOperand: 'http://www.w3.org/ns/odrl/2/purpose',
+          operator: 'http://www.w3.org/ns/odrl/2/isAnyOf',
+          rightOperand: form.purposes,
         });
 
         if (form.startTime) {