Index: oak-core/src/test/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/AbstractAccessControlListTest.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- oak-core/src/test/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/AbstractAccessControlListTest.java	(revision 1799652)
+++ oak-core/src/test/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/AbstractAccessControlListTest.java	(revision )
@@ -247,4 +247,19 @@
         // UNDEFINED for a unknown restriction name:
         assertEquals(PropertyType.UNDEFINED, acl.getRestrictionType("unknownRestrictionName"));
     }
+
+    @Test
+    public void testIsMultiValueRestriction() throws RepositoryException {
+        AbstractAccessControlList acl = createEmptyACL();
+        for (RestrictionDefinition def : getRestrictionProvider().getSupportedRestrictions(getTestPath())) {
+            boolean isMv = acl.isMultiValueRestriction(getNamePathMapper().getJcrName(def.getName()));
+
+            assertEquals(def.getRequiredType().isArray(), isMv);
+        }
+    }
+
+    @Test
+    public void testIsMultiValueRestrictionForUnknownName() throws RepositoryException {
+        assertFalse(createEmptyACL().isMultiValueRestriction("unknownRestrictionName"));
+    }
 }
\ No newline at end of file
Index: oak-core/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/package-info.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/package-info.java	(revision 1799652)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/package-info.java	(revision )
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-@Version("1.4.0")
+@Version("1.5.0")
 @Export(optional = "provide:=true")
 package org.apache.jackrabbit.oak.spi.security.authorization.accesscontrol;
 
\ No newline at end of file
Index: oak-core/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/AbstractAccessControlList.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/AbstractAccessControlList.java	(revision 1799652)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/spi/security/authorization/accesscontrol/AbstractAccessControlList.java	(revision )
@@ -129,6 +129,19 @@
     }
 
     @Override
+    public boolean isMultiValueRestriction(String restrictionName) throws RepositoryException {
+        for (RestrictionDefinition definition : getRestrictionProvider().getSupportedRestrictions(getOakPath())) {
+            String jcrName = namePathMapper.getJcrName(definition.getName());
+            if (jcrName.equals(restrictionName)) {
+                return definition.getRequiredType().isArray();
+            }
+        }
+        // not a supported restriction => return false.
+        return false;
+    }
+
+
+    @Override
     public boolean addEntry(Principal principal, Privilege[] privileges, boolean isAllow) throws RepositoryException {
         return addEntry(principal, privileges, isAllow, Collections.<String, Value>emptyMap());
     }
\ No newline at end of file