Better error message when missing context parameter (#360)

restatedev · Jul 25, 2024 · 4455eec · 4455eec
1 parent cf60abf
commit 4455eec
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/sdk-api-gen/src/main/java/dev/restate/sdk/gen/ElementConverter.java b/sdk-api-gen/src/main/java/dev/restate/sdk/gen/ElementConverter.java
@@ -260,9 +260,10 @@ private void validateMethodSignature(
   }
 
   private void validateFirstParameterType(Class<?> clazz, ExecutableElement element) {
-    if (!types.isSameType(
-        element.getParameters().get(0).asType(),
-        elements.getTypeElement(clazz.getCanonicalName()).asType())) {
+    if (element.getParameters().isEmpty()
+        || !types.isSameType(
+            element.getParameters().get(0).asType(),
+            elements.getTypeElement(clazz.getCanonicalName()).asType())) {
       messager.printMessage(
           Diagnostic.Kind.ERROR,
           "The method signature must have " + clazz.getCanonicalName() + " as first parameter",