/// <summary>Adds the null valued properties to the content section of a syndication entry</summary>
/// <param name="currentRoot">Current root node</param>
/// <param name="currentContent">Current collection to which property is to be added</param>
private void AddNullValuesToContent(EpmNullValuedPropertyNode currentRoot, DictionaryContent currentContent)
{
foreach (EpmNullValuedPropertyNode node in currentRoot.Children)
{
bool found;
DictionaryContent c = currentContent.Lookup(node.Name, out found);
Debug.Assert(node.ResourceType != null, "node.ResourceType != null");
switch (node.ResourceType.ResourceTypeKind)
{
case ResourceTypeKind.ComplexType:
if (!found)
{
// If a complex property is not found in content, it is either not being projected
// or all of its properties are mapped and all of them have KeepInContent=false
Debug.Assert(c == null, "when look up not found, c should be null.");
if (node.Element != null)
{
Debug.Assert(node.Children.Count > 0, "If the property represented by the current node is not null, there must be children nodes.");
// The complex property is not null, but some of its descendant properties are null.
// We need to serialize the type name of the complex property.
c = new DictionaryContent();
currentContent.Add(node.Name, node.ResourceType.FullName, c);
}
else
{
Debug.Assert(node.Children.Count == 0, "If the property represented by the current node is not null, there must not be any children node.");
// The complex property is null, we write out m:null='true'.
currentContent.AddNull(node.ResourceType.FullName, node.Name);
}
}
if (c != null)
{
// Only add the children properties if the complex property is not null.
this.AddNullValuesToContent(node, c);
}
break;
case ResourceTypeKind.Primitive:
Debug.Assert(c == null, "DictionaryContent not expected for primitive properties.");
Debug.Assert(node.Element == null, "node.Element == null");
if (!found)
{
currentContent.AddNull(node.ResourceType.FullName, node.Name);
}
// if found, use the value in currentContent, we don't need to do anything here.
break;
case ResourceTypeKind.EntityType:
Debug.Assert(false, "We cannot map navigation properties with friendly feeds.");
break;
}
}
}
