/// <summary>
/// Serializes the object to XML.
/// </summary>
/// <param name="xdRss"></param>
/// <param name="elementName"></param>
/// <param name="rssVersion"></param>
/// <returns></returns>
internal XmlNode SerializeToXml(XmlDocument xdRdf, RdfVersion version, RdfChannelItems channelItems, string prefix, RdfChannelImage channelImage, RdfChannelTextInput channelTextInput)
{
if (version == RdfVersion.RDF_1_0)
{
return(SerializeToXml_1_0(xdRdf, channelItems, prefix, channelImage, channelTextInput));
}
throw new ArgumentException(Rdf.RDF_ERRORMESSAGE_UNKNOWN_VALUE, "version");
}
/// <summary>
/// Returnes a RdfChannelItems of the items in the collection.
/// </summary>
/// <param name="xdRdf"></param>
/// <returns></returns>
internal RdfChannelItems GetChannelItems()
{
RdfChannelItems items = new RdfChannelItems();
foreach (RdfItem item in this)
{
items.Sequence.Add(new RdfSequenceItem(item.Link));
}
return(items);
}
/// <summary>
/// Serializes the object to XML according to RSS 0.91.
/// </summary>
/// <param name="xdRss"></param>
/// <returns></returns>
private XmlNode SerializeToXml_1_0(XmlDocument xdRdf, RdfChannelItems channelItems, string prefix, RdfChannelImage channelImage, RdfChannelTextInput channelTextInput)
{
XmlAttribute xaAbout = xdRdf.CreateAttribute(prefix, RDF_ATTRIBUTE_ABOUT, xdRdf.DocumentElement.NamespaceURI);
xaAbout.InnerText = this.GetAbout();
XmlElement xeChannel = xdRdf.CreateElement(null, RDF_ELEMENT_CHANNEL, xdRdf.DocumentElement.Attributes[RDF_ATTRIBUTE_XMLNS].InnerText);
xeChannel.Attributes.Append(xaAbout);
if (this.Title != null)
{
xeChannel.AppendChild(SerializeTitleToXml(xdRdf));
}
if (this.Link != null)
{
xeChannel.AppendChild(SerializeLinkToXml(xdRdf));
}
if (this.Description != null)
{
xeChannel.AppendChild(SerializeDescriptionToXml(xdRdf));
}
if (this.Image != null)
{
xeChannel.AppendChild(this.Image.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
else if (channelImage != null)
{
xeChannel.AppendChild(channelImage.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
if (this.Items != null)
{
xeChannel.AppendChild(this.Items.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
else if (channelItems != null)
{
xeChannel.AppendChild(channelItems.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
if (this.TextInput != null)
{
xeChannel.AppendChild(this.TextInput.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
else if (channelTextInput != null)
{
xeChannel.AppendChild(channelTextInput.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
//
// Always serialize modules last.
//
if (this.Modules != null)
{
this.Modules.SerializeToXml(xeChannel);
}
return(xeChannel);
}
/// <summary>
/// Saves the RDF feed as RDF 1.0.
/// </summary>
/// <returns></returns>
private XmlDocument SerializeToXml_1_0(string encoding)
{
XmlDocument xdRdf = new XmlDocument();
XmlDeclaration xdDeclaration = xdRdf.CreateXmlDeclaration(RDF_XML_VERSION_1_0, encoding, null);
xdRdf.AppendChild(xdDeclaration);
//
// Get Prefix.
//
string prefix = (this.Prefix == null) ? RDF_PREFIX_RDF : this.Prefix;
//
// Create the rdf element.
//
XmlElement xeRdf = xdRdf.CreateElement(prefix, RDF_ELEMENT_RDF, ((this.RdfNamespaceURI != null) ? this.RdfNamespaceURI : RDF_ATTRIBUTE_RDF_VALUE_1_0));
XmlAttribute xaXmlns = xdRdf.CreateAttribute(RDF_ATTRIBUTE_XMLNS);
xaXmlns.InnerText = (this.NamespaceURI != null) ? this.NamespaceURI : RDF_ATTRIBUTE_XMLNS_VALUE_1_0;
xeRdf.Attributes.Append(xaXmlns);
xdRdf.AppendChild(xeRdf);
//
// Append the channel element.
//
RdfChannelItems rci = (this.Items != null) ? this.Items.GetChannelItems() : null;
RdfChannelImage channelImage = (this.Image != null) ? this.Image.GetChannelImage() : null;
RdfChannelTextInput channelTextInput = (this.TextInput != null) ? this.TextInput.GetChannelTextInput() : null;
xeRdf.AppendChild(this.Channel.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, rci, prefix, channelImage, channelTextInput));
if (this.Image != null)
{
xeRdf.AppendChild(this.Image.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
this.Items.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, xeRdf, prefix);
if (this.TextInput != null)
{
xeRdf.AppendChild(this.TextInput.SerializeToXml(xdRdf, RdfVersion.RDF_1_0, prefix));
}
//
// Return the created XML document.
//
return(xdRdf);
}
