infinite loop

[elisa blasi <elisablasi@gmail.com>]

Hi,
I' m working on UBL xsd files to obtain a tree viewer of the documents,but the algorithm enter into an infinite loop because of the structure of the xsd.
For example, in the Order document there is the element "Signature" of type: Signature type. Signature type,that is a complex type, contains the element "SignatoryParty" of type PartyType. PartyType, that is a complexType, contains AgentParty that is a PartyType and will contain another AgentParty element...and so on.
Is it true? I don't understand the meaning of these circular calls.
Regards Elisa