System.Data.XmlDataInferenceLoader.GetElementMappingType C# (CSharp) Method

		private static ElementMappingType GetElementMappingType (
			XmlElement el, ArrayList ignoredNamespaces, Hashtable existingTables)
		{
			if (existingTables != null) {
				ArrayList al = existingTables [el.NamespaceURI] as ArrayList;
				if (al != null && al.Contains (el.LocalName))
					// this is not precise, but it is enough
					// for IsDocumentElementTable().
					return ElementMappingType.Complex;
			}

			foreach (XmlAttribute attr in el.Attributes) {
				if (attr.NamespaceURI == XmlConstants.XmlnsNS 
#if NET_2_0
					|| attr.NamespaceURI == XmlConstants.XmlNS
#endif
					)
					continue;
				if (ignoredNamespaces != null && ignoredNamespaces.Contains (attr.NamespaceURI))
					continue;
				SetAsExistingTable (el, existingTables);
				return ElementMappingType.Complex;
			}
			foreach (XmlNode n in el.ChildNodes) {
				if (n.NodeType == XmlNodeType.Element) {
					SetAsExistingTable (el, existingTables);
					return ElementMappingType.Complex;
				}
			}

			for (XmlNode n = el.NextSibling; n != null; n = n.NextSibling) {
				if (n.NodeType == XmlNodeType.Element && n.LocalName == el.LocalName) {
					SetAsExistingTable (el, existingTables);
					return GetElementMappingType (n as XmlElement,
						ignoredNamespaces, null)
						== ElementMappingType.Complex ?
						ElementMappingType.Complex :
						ElementMappingType.Repeated;
				}
			}

			return ElementMappingType.Simple;
		}