//////////////////////////////////////////////////////////////////////
/// <summary>parses an xml node to create an Comments object</summary>
/// <param name="node">comments node</param>
/// <returns> the created Comments object</returns>
//////////////////////////////////////////////////////////////////////
public static Comments ParseComments(XmlNode node)
{
Tracing.TraceCall();
Comments comments = null;
Tracing.Assert(node != null, "node should not be null");
if (node == null)
{
throw new ArgumentNullException("node");
}
object localname = node.LocalName;
if (localname.Equals(GDataParserNameTable.XmlCommentsElement))
{
comments = new Comments();
if (node.HasChildNodes)
{
XmlNode commentsChild = node.FirstChild;
while (commentsChild != null && commentsChild is XmlElement)
{
if (commentsChild.LocalName == GDataParserNameTable.XmlFeedLinkElement &&
commentsChild.NamespaceURI == BaseNameTable.gNamespace)
{
if (comments.FeedLink == null)
{
comments.FeedLink = FeedLink.ParseFeedLink(commentsChild);
}
else
{
throw new ArgumentException("Only one feedLink is allowed inside the gd:comments");
}
}
commentsChild = commentsChild.NextSibling;
}
}
}
if (comments.FeedLink == null)
{
throw new ArgumentException("gd:comments/gd:feedLink is required.");
}
return comments;
}
//////////////////////////////////////////////////////////////////////
/// <summary>Parses an xml node to create a Where object.</summary>
/// <param name="node">the node to parse node</param>
/// <param name="parser">the xml parser to use if we need to dive deeper</param>
/// <returns>the created Where object</returns>
//////////////////////////////////////////////////////////////////////
public IExtensionElementFactory CreateInstance(XmlNode node, AtomFeedParser parser)
{
Tracing.TraceCall();
Comments comments = null;
if (node != null)
{
object localname = node.LocalName;
if (!localname.Equals(this.XmlName) ||
!node.NamespaceURI.Equals(this.XmlNameSpace))
{
return null;
}
}
comments = new Comments();
if (node != null)
{
if (node.HasChildNodes)
{
XmlNode commentsChild = node.FirstChild;
while (commentsChild != null && commentsChild is XmlElement)
{
if (commentsChild.LocalName == GDataParserNameTable.XmlFeedLinkElement &&
commentsChild.NamespaceURI == BaseNameTable.gNamespace)
{
if (comments.FeedLink == null)
{
comments.FeedLink = FeedLink.ParseFeedLink(commentsChild);
}
else
{
throw new ArgumentException("Only one feedLink is allowed inside the gd:comments");
}
}
commentsChild = commentsChild.NextSibling;
}
}
}
return comments;
}
