GG-338 Fix wrapped externalField

graphitron-codegen-parent/graphitron-java-codegen/src/main/java/no/sikt/graphitron/generators/db/FetchDBMethodGenerator.java

@@ -295,7 +295,7 @@ protected Pair<CodeBlock, String> getSelectCodeAndFieldSource(GenerationField fi
                     ? generateCorrelatedSubquery(field, context.nextContext(field))
                     : generateSelectRow(context.nextContext(field));
         } else if (field.isExternalField()) {
-            JOOQMapping table = processedSchema.getObject(field.getContainerTypeName()).getTable();
+            JOOQMapping table = context.getTargetTable();
 
             if (table == null) {
                 throw new IllegalArgumentException("No table found for field " + field.getName());

graphitron-codegen-parent/graphitron-java-codegen/src/test/java/no/sikt/graphitron/queries/fetch/OutputTest.java

@@ -106,6 +106,14 @@ void externalField() {
         );
     }
 
+    @Test
+    @DisplayName("External field in wrapper type without table should find previous target table")
+    void externalFieldWrappedType() {
+        assertGeneratedContentContains("externalFieldWrappedType",
+                "DSL.row(no.sikt.graphitron.codereferences.extensionmethods.ClassWithExtensionMethod.name(_a_customer))"
+        );
+    }
+
     @Test
     @DisplayName("Field annotated with @externalField should map types correctly even when over 22 fields")
     void externalFieldOver22() {

graphitron-codegen-parent/graphitron-java-codegen/src/test/resources/queries/fetch/output/externalFieldWrappedType/schema.graphqls

@@ -0,0 +1,11 @@
+type Query {
+  query: Customer
+}
+
+type Customer @table {
+  something: Something
+}
+
+type Something {
+  name: String @externalField
+}