//============================================================
// ICOMPARABLE IMPLEMENTATION
//============================================================
#region CompareTo(object obj)
/// <summary>
/// Compares the current instance with another object of the same type.
/// </summary>
/// <param name="obj">An object to compare with this instance.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
/// <exception cref="ArgumentException">The <paramref name="obj"/> is not the expected <see cref="Type"/>.</exception>
public int CompareTo(object obj)
{
//------------------------------------------------------------
// If target is a null reference, instance is greater
//------------------------------------------------------------
if (obj == null)
{
return(1);
}
//------------------------------------------------------------
// Determine comparison result using property state of objects
//------------------------------------------------------------
RssCategory value = obj as RssCategory;
if (value != null)
{
int result = String.Compare(this.Domain, value.Domain, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.Value, value.Value, StringComparison.OrdinalIgnoreCase);
return(result);
}
else
{
throw new ArgumentException(String.Format(null, "obj is not of type {0}, type was found to be '{1}'.", this.GetType().FullName, obj.GetType().FullName), "obj");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GenericSyndicationCategory"/> class using the supplied <see cref="RssCategory"/>.
/// </summary>
/// <param name="category">The <see cref="RssCategory"/> to build an abstraction against.</param>
/// <exception cref="ArgumentNullException">The <paramref name="category"/> is a null reference (Nothing in Visual Basic).</exception>
public GenericSyndicationCategory(RssCategory category)
{
Guard.ArgumentNotNull(category, "category");
if (!String.IsNullOrEmpty(category.Domain))
{
categoryScheme = category.Domain.Trim();
}
if (!String.IsNullOrEmpty(category.Value))
{
categoryTerm = category.Value.Trim();
}
}
/// <summary>
/// Compares the current instance with another object of the same type.
/// </summary>
/// <param name="obj">An object to compare with this instance.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
/// <exception cref="ArgumentException">The <paramref name="obj"/> is not the expected <see cref="Type"/>.</exception>
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
RssCategory value = obj as RssCategory;
if (value != null)
{
int result = String.Compare(this.Domain, value.Domain, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.Value, value.Value, StringComparison.OrdinalIgnoreCase);
return(result);
}
else
{
throw new ArgumentException(String.Format(null, "obj is not of type {0}, type was found to be '{1}'.", this.GetType().FullName, obj.GetType().FullName), "obj");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="GenericSyndicationCategory"/> class using the supplied <see cref="RssCategory"/>.
/// </summary>
/// <param name="category">The <see cref="RssCategory"/> to build an abstraction against.</param>
/// <exception cref="ArgumentNullException">The <paramref name="category"/> is a null reference (Nothing in Visual Basic).</exception>
public GenericSyndicationCategory(RssCategory category)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(category, "category");
//------------------------------------------------------------
// Extract information from the format specific category
//------------------------------------------------------------
if (!String.IsNullOrEmpty(category.Domain))
{
categoryScheme = category.Domain.Trim();
}
if (!String.IsNullOrEmpty(category.Value))
{
categoryTerm = category.Value.Trim();
}
}
/// <summary>
/// Loads the collection elements of this <see cref="RssChannel"/> using the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve namespace prefixes.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
/// <returns><b>true</b> if the <see cref="RssChannel"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <remarks>
/// <para>
/// This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssChannel"/>.
/// </para>
/// <para>
/// The number of <see cref="RssChannel.Items"/> that are loaded is limited based on the <see cref="SyndicationResourceLoadSettings.RetrievalLimit"/>.
/// </para>
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
private bool LoadCollections(XPathNavigator source, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
XPathNodeIterator categoryIterator = source.Select("category", manager);
XPathNodeIterator skipDaysIterator = source.Select("skipDays/day", manager);
XPathNodeIterator skipHoursIterator = source.Select("skipHours/hour", manager);
XPathNodeIterator itemIterator = source.Select("item", manager);
if (categoryIterator != null && categoryIterator.Count > 0)
{
while (categoryIterator.MoveNext())
{
RssCategory category = new RssCategory();
if (category.Load(categoryIterator.Current, settings))
{
this.Categories.Add(category);
wasLoaded = true;
}
}
}
if (skipDaysIterator != null && skipDaysIterator.Count > 0)
{
while (skipDaysIterator.MoveNext())
{
if (!String.IsNullOrEmpty(skipDaysIterator.Current.Value))
{
try
{
DayOfWeek day = (DayOfWeek)Enum.Parse(typeof(DayOfWeek), skipDaysIterator.Current.Value, true);
if (!this.SkipDays.Contains(day))
{
this.SkipDays.Add(day);
wasLoaded = true;
}
}
catch (ArgumentException)
{
System.Diagnostics.Trace.TraceWarning("RssChannel unable to determine DayOfWeek with a name of {0}.", skipDaysIterator.Current.Value);
}
}
}
}
if (skipHoursIterator != null && skipHoursIterator.Count > 0)
{
while (skipHoursIterator.MoveNext())
{
int hour;
if (Int32.TryParse(skipHoursIterator.Current.Value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out hour))
{
if (!this.SkipHours.Contains(hour) && (hour >= 0 && hour <= 23))
{
this.SkipHours.Add(hour);
wasLoaded = true;
}
else
{
System.Diagnostics.Trace.TraceWarning("RssChannel unable to add duplicate or out-of-range skip hour with a value of {0}.", hour);
}
}
}
}
if (itemIterator != null && itemIterator.Count > 0)
{
int counter = 0;
while (itemIterator.MoveNext())
{
RssItem item = new RssItem();
counter++;
if (item.Load(itemIterator.Current, settings))
{
if (settings.RetrievalLimit != 0 && counter > settings.RetrievalLimit)
{
break;
}
((Collection<RssItem>)this.Items).Add(item);
wasLoaded = true;
}
}
}
return wasLoaded;
}
/// <summary>
/// Initializes a new instance of the <see cref="GenericSyndicationCategory"/> class using the supplied <see cref="RssCategory"/>.
/// </summary>
/// <param name="category">The <see cref="RssCategory"/> to build an abstraction against.</param>
/// <exception cref="ArgumentNullException">The <paramref name="category"/> is a null reference (Nothing in Visual Basic).</exception>
public GenericSyndicationCategory(RssCategory category)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(category, "category");
//------------------------------------------------------------
// Extract information from the format specific category
//------------------------------------------------------------
if(!String.IsNullOrEmpty(category.Domain))
{
categoryScheme = category.Domain.Trim();
}
if (!String.IsNullOrEmpty(category.Value))
{
categoryTerm = category.Value.Trim();
}
}
/// <summary>
/// Loads this <see cref="RssItem"/> using the supplied <see cref="XPathNavigator"/> and <see cref="SyndicationResourceLoadSettings"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
/// <returns><b>true</b> if the <see cref="RssItem"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <remarks>
/// This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssItem"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
public bool Load(XPathNavigator source, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(settings, "settings");
//------------------------------------------------------------
// Create namespace resolver
//------------------------------------------------------------
XmlNamespaceManager manager = new XmlNamespaceManager(source.NameTable);
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
XPathNavigator authorNavigator = source.SelectSingleNode("author", manager);
XPathNavigator commentsNavigator = source.SelectSingleNode("comments", manager);
XPathNavigator descriptionNavigator = source.SelectSingleNode("description", manager);
XPathNavigator guidNavigator = source.SelectSingleNode("guid", manager);
XPathNavigator linkNavigator = source.SelectSingleNode("link", manager);
XPathNavigator publicationNavigator = source.SelectSingleNode("pubDate", manager);
XPathNavigator sourceNavigator = source.SelectSingleNode("source", manager);
XPathNavigator titleNavigator = source.SelectSingleNode("title", manager);
XPathNodeIterator categoryIterator = source.Select("category", manager);
XPathNodeIterator enclosureIterator = source.Select("enclosure", manager);
//------------------------------------------------------------
// Load required/common item elements
//------------------------------------------------------------
if (titleNavigator != null)
{
this.Title = titleNavigator.Value;
wasLoaded = true;
}
if (descriptionNavigator != null)
{
this.Description = descriptionNavigator.Value;
wasLoaded = true;
}
if (linkNavigator != null)
{
Uri link;
if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
{
this.Link = link;
wasLoaded = true;
}
}
//------------------------------------------------------------
// Load optional item elements
//------------------------------------------------------------
if (authorNavigator != null)
{
this.Author = authorNavigator.Value;
wasLoaded = true;
}
if (commentsNavigator != null)
{
Uri comments;
if (Uri.TryCreate(commentsNavigator.Value, UriKind.RelativeOrAbsolute, out comments))
{
this.Comments = comments;
wasLoaded = true;
}
}
if (guidNavigator != null)
{
RssGuid guid = new RssGuid();
if (guid.Load(guidNavigator, settings))
{
this.Guid = guid;
wasLoaded = true;
}
}
if (publicationNavigator != null)
{
DateTime publicationDate;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
{
this.PublicationDate = publicationDate;
wasLoaded = true;
}
}
if (sourceNavigator != null)
{
RssSource sourceFeed = new RssSource();
if (sourceFeed.Load(sourceNavigator, settings))
{
this.Source = sourceFeed;
wasLoaded = true;
}
}
//------------------------------------------------------------
// Load item collection elements
//------------------------------------------------------------
if (categoryIterator != null && categoryIterator.Count > 0)
{
while (categoryIterator.MoveNext())
{
RssCategory category = new RssCategory();
if (category.Load(categoryIterator.Current, settings))
{
this.Categories.Add(category);
}
}
}
if (enclosureIterator != null && enclosureIterator.Count > 0)
{
while (enclosureIterator.MoveNext())
{
RssEnclosure enclosure = new RssEnclosure();
if (enclosure.Load(enclosureIterator.Current, settings))
{
this.Enclosures.Add(enclosure);
}
}
}
//------------------------------------------------------------
// Attempt to extract syndication extension information
//------------------------------------------------------------
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);
adapter.Fill(this);
return(wasLoaded);
}
/// <summary>
/// Loads this <see cref="RssItem"/> using the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <returns><b>true</b> if the <see cref="RssItem"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <remarks>
/// This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssItem"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
public bool Load(XPathNavigator source)
{
bool wasLoaded = false;
Guard.ArgumentNotNull(source, "source");
XmlNamespaceManager manager = new XmlNamespaceManager(source.NameTable);
XPathNavigator authorNavigator = source.SelectSingleNode("author", manager);
XPathNavigator commentsNavigator = source.SelectSingleNode("comments", manager);
XPathNavigator descriptionNavigator = source.SelectSingleNode("description", manager);
XPathNavigator guidNavigator = source.SelectSingleNode("guid", manager);
XPathNavigator linkNavigator = source.SelectSingleNode("link", manager);
XPathNavigator publicationNavigator = source.SelectSingleNode("pubDate", manager);
XPathNavigator sourceNavigator = source.SelectSingleNode("source", manager);
XPathNavigator titleNavigator = source.SelectSingleNode("title", manager);
XPathNodeIterator categoryIterator = source.Select("category", manager);
XPathNodeIterator enclosureIterator = source.Select("enclosure", manager);
if (titleNavigator != null)
{
this.Title = titleNavigator.Value;
wasLoaded = true;
}
if (descriptionNavigator != null)
{
this.Description = descriptionNavigator.Value;
wasLoaded = true;
}
if (linkNavigator != null)
{
Uri link;
if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
{
this.Link = link;
wasLoaded = true;
}
}
if (authorNavigator != null)
{
this.Author = authorNavigator.Value;
wasLoaded = true;
}
if (commentsNavigator != null)
{
Uri comments;
if (Uri.TryCreate(commentsNavigator.Value, UriKind.RelativeOrAbsolute, out comments))
{
this.Comments = comments;
wasLoaded = true;
}
}
if (guidNavigator != null)
{
RssGuid guid = new RssGuid();
if (guid.Load(guidNavigator))
{
this.Guid = guid;
wasLoaded = true;
}
}
if (publicationNavigator != null)
{
DateTime publicationDate;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
{
this.PublicationDate = publicationDate;
wasLoaded = true;
}
}
if (sourceNavigator != null)
{
RssSource sourceFeed = new RssSource();
if (sourceFeed.Load(sourceNavigator))
{
this.Source = sourceFeed;
wasLoaded = true;
}
}
if (categoryIterator != null && categoryIterator.Count > 0)
{
while (categoryIterator.MoveNext())
{
RssCategory category = new RssCategory();
if (category.Load(categoryIterator.Current))
{
this.Categories.Add(category);
}
}
}
if (enclosureIterator != null && enclosureIterator.Count > 0)
{
while (enclosureIterator.MoveNext())
{
RssEnclosure enclosure = new RssEnclosure();
if (enclosure.Load(enclosureIterator.Current))
{
this.Enclosures.Add(enclosure);
}
}
}
return(wasLoaded);
}
/// <summary>
/// Initializes the supplied <see cref="RssItem"/> using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
/// </summary>
/// <param name="item">The <see cref="RssItem"/> to be filled.</param>
/// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the item XML data.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
/// <exception cref="ArgumentNullException">The <paramref name="item"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
private static void FillItem(RssItem item, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(item, "item");
Guard.ArgumentNotNull(navigator, "navigator");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
//------------------------------------------------------------
// Attempt to extract item information
//------------------------------------------------------------
XPathNavigator titleNavigator = navigator.SelectSingleNode("title", manager);
XPathNavigator linkNavigator = navigator.SelectSingleNode("link", manager);
XPathNavigator descriptionNavigator = navigator.SelectSingleNode("description", manager);
XPathNavigator sourceNavigator = navigator.SelectSingleNode("source", manager);
XPathNodeIterator enclosureIterator = navigator.Select("enclosure", manager);
XPathNodeIterator categoryIterator = navigator.Select("category", manager);
if (titleNavigator != null)
{
item.Title = titleNavigator.Value;
}
if (descriptionNavigator != null)
{
item.Description = descriptionNavigator.Value;
}
if (linkNavigator != null)
{
Uri link;
if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
{
item.Link = link;
}
}
if (sourceNavigator != null)
{
item.Source = new RssSource();
if (sourceNavigator.HasAttributes)
{
string urlAttribute = sourceNavigator.GetAttribute("url", String.Empty);
Uri url;
if (Uri.TryCreate(urlAttribute, UriKind.RelativeOrAbsolute, out url))
{
item.Source.Url = url;
}
}
if(!String.IsNullOrEmpty(sourceNavigator.Value))
{
item.Source.Title = sourceNavigator.Value;
}
}
if (enclosureIterator != null && enclosureIterator.Count > 0)
{
while (enclosureIterator.MoveNext())
{
RssEnclosure enclosure = new RssEnclosure();
Rss092SyndicationResourceAdapter.FillEnclosure(enclosure, enclosureIterator.Current, manager, settings);
item.Enclosures.Add(enclosure);
}
}
if (categoryIterator != null && categoryIterator.Count > 0)
{
while (categoryIterator.MoveNext())
{
RssCategory category = new RssCategory();
Rss092SyndicationResourceAdapter.FillCategory(category, categoryIterator.Current, manager, settings);
item.Categories.Add(category);
}
}
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(navigator, settings);
adapter.Fill(item);
}
/// <summary>
/// Initializes the supplied <see cref="RssCategory"/> using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
/// </summary>
/// <param name="category">The <see cref="RssCategory"/> to be filled.</param>
/// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the category XML data.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
/// <exception cref="ArgumentNullException">The <paramref name="category"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
private static void FillCategory(RssCategory category, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(category, "category");
Guard.ArgumentNotNull(navigator, "navigator");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
//------------------------------------------------------------
// Attempt to extract category information
//------------------------------------------------------------
if (navigator.HasAttributes)
{
string domainAttribute = navigator.GetAttribute("domain", String.Empty);
if (!String.IsNullOrEmpty(domainAttribute))
{
category.Domain = domainAttribute;
}
}
if (!String.IsNullOrEmpty(navigator.Value))
{
category.Value = navigator.Value;
}
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(navigator, settings);
adapter.Fill(category);
}
/// <summary>
/// Loads this <see cref="RssItem"/> using the supplied <see cref="XPathNavigator"/> and <see cref="SyndicationResourceLoadSettings"/>.
/// </summary>
/// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
/// <returns><b>true</b> if the <see cref="RssItem"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <remarks>
/// This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssItem"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
public bool Load(XPathNavigator source, SyndicationResourceLoadSettings settings)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(settings, "settings");
//------------------------------------------------------------
// Create namespace resolver
//------------------------------------------------------------
XmlNamespaceManager manager = new XmlNamespaceManager(source.NameTable);
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
XPathNavigator authorNavigator = source.SelectSingleNode("author", manager);
XPathNavigator commentsNavigator = source.SelectSingleNode("comments", manager);
XPathNavigator descriptionNavigator = source.SelectSingleNode("description", manager);
XPathNavigator guidNavigator = source.SelectSingleNode("guid", manager);
XPathNavigator linkNavigator = source.SelectSingleNode("link", manager);
XPathNavigator publicationNavigator = source.SelectSingleNode("pubDate", manager);
XPathNavigator sourceNavigator = source.SelectSingleNode("source", manager);
XPathNavigator titleNavigator = source.SelectSingleNode("title", manager);
XPathNodeIterator categoryIterator = source.Select("category", manager);
XPathNodeIterator enclosureIterator = source.Select("enclosure", manager);
//------------------------------------------------------------
// Load required/common item elements
//------------------------------------------------------------
if (titleNavigator != null)
{
this.Title = titleNavigator.Value;
wasLoaded = true;
}
if (descriptionNavigator != null)
{
this.Description = descriptionNavigator.Value;
wasLoaded = true;
}
if (linkNavigator != null)
{
Uri link;
if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
{
this.Link = link;
wasLoaded = true;
}
}
//------------------------------------------------------------
// Load optional item elements
//------------------------------------------------------------
if (authorNavigator != null)
{
this.Author = authorNavigator.Value;
wasLoaded = true;
}
if (commentsNavigator != null)
{
Uri comments;
if (Uri.TryCreate(commentsNavigator.Value, UriKind.RelativeOrAbsolute, out comments))
{
this.Comments = comments;
wasLoaded = true;
}
}
if (guidNavigator != null)
{
RssGuid guid = new RssGuid();
if (guid.Load(guidNavigator, settings))
{
this.Guid = guid;
wasLoaded = true;
}
}
if (publicationNavigator != null)
{
DateTime publicationDate;
if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
{
this.PublicationDate = publicationDate;
wasLoaded = true;
}
}
if (sourceNavigator != null)
{
RssSource sourceFeed = new RssSource();
if (sourceFeed.Load(sourceNavigator, settings))
{
this.Source = sourceFeed;
wasLoaded = true;
}
}
//------------------------------------------------------------
// Load item collection elements
//------------------------------------------------------------
if (categoryIterator != null && categoryIterator.Count > 0)
{
while (categoryIterator.MoveNext())
{
RssCategory category = new RssCategory();
if (category.Load(categoryIterator.Current, settings))
{
this.Categories.Add(category);
}
}
}
if (enclosureIterator != null && enclosureIterator.Count > 0)
{
while (enclosureIterator.MoveNext())
{
RssEnclosure enclosure = new RssEnclosure();
if (enclosure.Load(enclosureIterator.Current, settings))
{
this.Enclosures.Add(enclosure);
}
}
}
//------------------------------------------------------------
// Attempt to extract syndication extension information
//------------------------------------------------------------
SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);
adapter.Fill(this);
return wasLoaded;
}