coheigea commented on a change in pull request #543: [CXF-8025]: Fix Wrapper 
Style for multilevel xsd:extension elements
URL: https://github.com/apache/cxf/pull/543#discussion_r302104590
 
 

 ##########
 File path: 
tools/wsdlto/frontend/jaxws/src/main/java/org/apache/cxf/tools/wsdlto/frontend/jaxws/processor/internal/ProcessorUtil.java
 ##########
 @@ -368,32 +366,46 @@ public static Node cloneNode(Document document, Node 
node, boolean deep) throws
 
         XmlSchemaSequence seq = (XmlSchemaSequence)type.getParticle();
 
-        qnames.addAll(createWrappedElements(seq));
+        List<WrapperElement> qnames = createWrappedElements(seq);
 
         //If it's extension
         if (seq == null && type.getContentModel() != null) {
+            qnames.addAll(createWrappedElementsFromExtension(schema, type));
+        }
 
-            XmlSchemaContent xmlSchemaConent = 
type.getContentModel().getContent();
-            if (xmlSchemaConent instanceof XmlSchemaComplexContentExtension) {
-                XmlSchemaComplexContentExtension extension = 
(XmlSchemaComplexContentExtension)type
-                    .getContentModel().getContent();
-                QName baseTypeName = extension.getBaseTypeName();
-                XmlSchemaType schemaType = schema.getTypeByQName(baseTypeName);
-                if (schemaType instanceof XmlSchemaComplexType) {
-                    XmlSchemaComplexType complexType = 
(XmlSchemaComplexType)schemaType;
-                    if (complexType.getParticle() instanceof 
XmlSchemaSequence) {
-                        seq = (XmlSchemaSequence)complexType.getParticle();
-                        qnames.addAll(createWrappedElements(seq));
-                    }
-                }
+        return qnames;
+    }
 
-                if (extension.getParticle() instanceof XmlSchemaSequence) {
-                    XmlSchemaSequence xmlSchemaSeq = 
(XmlSchemaSequence)extension.getParticle();
-                    qnames.addAll(createWrappedElements(xmlSchemaSeq));
-                }
+    private static List<WrapperElement> 
createWrappedElementsFromExtension(SchemaCollection schema,
+                                                                           
XmlSchemaComplexType type) {
+        List<WrapperElement> qnames = new ArrayList<>();
+
+        XmlSchemaContent schemaContent = type.getContentModel().getContent();
+        if (!(schemaContent instanceof XmlSchemaComplexContentExtension)) {
+            return qnames;
+        }
+
+        XmlSchemaComplexContentExtension extension = 
(XmlSchemaComplexContentExtension)schemaContent;
+        QName baseTypeName = extension.getBaseTypeName();
+        XmlSchemaType baseType = schema.getTypeByQName(baseTypeName);
+
+        if (baseType instanceof XmlSchemaComplexType) {
+            XmlSchemaComplexType complexBaseType = 
(XmlSchemaComplexType)baseType;
+
+            if (complexBaseType.getParticle() == null && 
complexBaseType.getContentModel() != null) {
+                // continue up the extension ladder
+                qnames.addAll(createWrappedElementsFromExtension(schema, 
complexBaseType));
 
 Review comment:
   Any update?

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