javaduke commented on code in PR #8023:
URL: https://github.com/apache/camel/pull/8023#discussion_r929416317


##########
components/camel-datasonnet/src/main/java/org/apache/camel/language/datasonnet/DatasonnetExpression.java:
##########
@@ -114,14 +114,20 @@ private Document<?> doEvaluate(Exchange exchange) {
         }
 
         Document<?> body;
+
         if (exchange.getMessage().getBody() instanceof Document) {
             body = (Document<?>) exchange.getMessage().getBody();
+        } else if (exchange.getMessage().getBody() == null || 
"".equals(MessageHelper.extractBodyAsString(exchange.getMessage()))) {
+            //Empty body, force type to be application/java
+            body = new DefaultDocument<>("", MediaTypes.APPLICATION_JAVA);
         } else if (MediaTypes.APPLICATION_JAVA.equalsTypeAndSubtype(bodyMT) || 
bodyMT == null) {
             body = new DefaultDocument<>(exchange.getMessage().getBody());
         } else {
             body = new 
DefaultDocument<>(MessageHelper.extractBodyAsString(exchange.getMessage()), 
bodyMT);

Review Comment:
   Makes sense, I refactored it.



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