internal static ItemType InferItemType(XPathNavigator item) { string value; if (item.TryGetAttribute("nil", Framework.Common.XSI.Namespace, out value) && XmlConvert.ToBoolean(value)) { return ItemType.Property; } if (item.HasAttribute("key", Framework.Common.SData.Namespace) || item.HasAttribute("uuid", Framework.Common.SData.Namespace) || item.HasAttribute("lookup", Framework.Common.SData.Namespace) || item.HasAttribute("descriptor", Framework.Common.SData.Namespace)) { return ItemType.Object; } if (item.HasAttribute("url", Framework.Common.SData.Namespace) || item.HasAttribute("uri", Framework.Common.SData.Namespace) || item.HasAttribute("deleteMissing", Framework.Common.SData.Namespace)) { return ItemType.PayloadCollection; } if (item.IsEmptyElement) { // workaround: Older versions of the SIF generate payload collections as empty namespace-less elements return string.IsNullOrEmpty(item.NamespaceURI) ? ItemType.PayloadCollection : ItemType.Property; } var children = item.SelectChildren(XPathNodeType.Element).Cast<XPathNavigator>(); var childCount = children.Count(); if (childCount == 0) { return ItemType.Property; } if (childCount > 1 && children.Select(child => child.LocalName).Distinct().Count() == 1) { if (children.All(child => InferItemType(child) == ItemType.Object)) { return ItemType.PayloadCollection; } if (children.All(child => InferItemType(child) == ItemType.Property)) { return ItemType.SimpleCollection; } } return ItemType.Object; }
public bool Load(XPathNavigator source, XmlNamespaceManager manager) { //------------------------------------------------------------ // Validate parameter //------------------------------------------------------------ Guard.ArgumentNotNull(source, "source"); //------------------------------------------------------------ // Attempt to extract syndication information //------------------------------------------------------------ ResourceName = source.LocalName; Namespace = source.NamespaceURI; string value; Key = source.TryGetAttribute("key", Framework.Common.SData.Namespace, out value) ? value : null; Uri = source.TryGetAttribute("uri", Framework.Common.SData.Namespace, out value) && !string.IsNullOrEmpty(value) ? new Uri(value) : null; Uuid = source.TryGetAttribute("uuid", Framework.Common.SData.Namespace, out value) && !string.IsNullOrEmpty(value) ? new Guid(value) : (Guid?) null; Descriptor = source.TryGetAttribute("descriptor", Framework.Common.SData.Namespace, out value) ? value : null; Lookup = source.TryGetAttribute("lookup", Framework.Common.SData.Namespace, out value) ? value : null; IsDeleted = source.TryGetAttribute("isDeleted", Framework.Common.SData.Namespace, out value) && !string.IsNullOrEmpty(value) ? XmlConvert.ToBoolean(value) : (bool?) null; return source.SelectChildren(XPathNodeType.Element) .Cast<XPathNavigator>() .GroupBy(item => item.LocalName) .All(group => LoadItem(group.Key, group, manager)); }
internal static ItemType InferItemType(XPathNavigator item) { string value; if (item.TryGetAttribute("nil", Framework.Common.XSI.Namespace, out value) && XmlConvert.ToBoolean(value)) { return ItemType.Property; } if (item.HasAttribute("key", Framework.Common.SData.Namespace) || item.HasAttribute("uuid", Framework.Common.SData.Namespace) || item.HasAttribute("lookup", Framework.Common.SData.Namespace) || item.HasAttribute("descriptor", Framework.Common.SData.Namespace)) { return ItemType.Object; } if (item.HasAttribute("url", Framework.Common.SData.Namespace) || item.HasAttribute("deleteMissing", Framework.Common.SData.Namespace) || item.IsEmptyElement) { return ItemType.PayloadCollection; } var children = item.SelectChildren(XPathNodeType.Element).Cast<XPathNavigator>(); var childCount = children.Count(); if (childCount == 0) { return ItemType.Property; } if (children.Select(child => child.LocalName).Distinct().Count() == 1 && children.All(child => InferItemType(child) == ItemType.Object)) { return ItemType.PayloadCollection; } if (children.Select(child => child.LocalName).Distinct().Count() == 1 && children.All(child => InferItemType(child) == ItemType.Property)) { return ItemType.SimpleCollection; } return ItemType.Object; }