[UBL2.1] Unable to add UBLDocumentSignatures in "UBLExtentions > UBLExtention > ExtensionContent"

[Wei Chong]

Hi Phax, thank you for sharing this library.
I'm creating a InvoiceType with DocumentSignatures in UBLExtension, I'm getting error while adding the signatures in extension content.
Can you help to explain more about the validation error or any suggestion to fix this error?

Java Code:
UBLDocumentSignaturesType signatures = new UBLDocumentSignaturesType();
signatures.addSignatureInformation(signatureInfo);
extensionContent.setAny(signatures);
ublExtension.setExtensionURI("urn:oasis:names:specification:ubl:dsig:enveloped:xades");
ublExtension.setExtensionContent(extensionContent);
ublExtensions.addUBLExtension(ublExtension);
inv.setUBLExtensions(ublExtensions);

Validation Result:
[Text=cvc-complex-type.2.4.b: The content of element 'cec:ExtensionContent' is not complete. One of '{WC[##other:"urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2"]}' is expected.]

Target Format:

<ext:UBLExtensions>
<ext:UBLExtension>
<ext:ExtensionURI>urn:oasis:names:specification:ubl:dsig:enveloped:xades</ext:ExtensionURI>
<ext:ExtensionContent>
<sig:UBLDocumentSignatures xmlns:sig="urn:oasis:names:specification:ubl:schema:xsd:CommonSignatureComponents-2" xmlns:sac="urn:oasis:names:specification:ubl:schema:xsd:SignatureAggregateComponents-2" xmlns:sbc="urn:oasis:names:specification:ubl:schema:xsd:SignatureBasicComponents-2">
<sac:SignatureInformation>
...
</sac:SignatureInformation>
</sig:UBLDocumentSignatures>
</ext:ExtensionContent>
</ext:UBLExtension>
</ext:UBLExtensions>

[Philip Helger]

I created some sample code to run your example.
Basically what you need to do, is to pass in a org.w3c.dom.Element into extensionContent.setAny (...);. So you need to explicitly marshall the extension content before adding it in. Passing in the domain object will not work.
hth

[Wei Chong]

Thank you very much, able to acheive my target now.