mattyb149 commented on a change in pull request #3543: NIFI-6388 Add dynamic 
relationships to the ExecuteScript processor.
URL: https://github.com/apache/nifi/pull/3543#discussion_r297676705
 
 

 ##########
 File path: 
nifi-nar-bundles/nifi-scripting-bundle/nifi-scripting-processors/src/main/java/org/apache/nifi/processors/script/ExecuteScript.java
 ##########
 @@ -133,13 +167,57 @@
      */
     @Override
     protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(final 
String propertyDescriptorName) {
-        return new PropertyDescriptor.Builder()
+        final boolean isRelationship = propertyDescriptorName != null && 
propertyDescriptorName.startsWith(DYNAMIC_RELATIONSHIP_PREFIX);
+        if (isRelationship) {
+            if 
(!DYNAMIC_RELATIONSHIP_PATTERN.matcher(propertyDescriptorName).matches()) {
+                log.warn("dyn. property for relationship is invalid: '{}'. 
accepted patterns: '{}'", new Object[]{propertyDescriptorName, 
DYNAMIC_RELATIONSHIP_PATTERN_AS_STRING});
 
 Review comment:
   Let's spell out `dynamic` here for clarity.

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