//============================================================
// 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
//------------------------------------------------------------
GenericSyndicationItem value = obj as GenericSyndicationItem;
if (value != null)
{
int result = GenericSyndicationFeed.CompareSequence(this.Categories, value.Categories);
result = result | String.Compare(this.Summary, value.Summary, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.Title, value.Title, 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>
/// 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);
}
GenericSyndicationItem value = obj as GenericSyndicationItem;
if (value != null)
{
int result = GenericSyndicationFeed.CompareSequence(this.Categories, value.Categories);
result = result | String.Compare(this.Summary, value.Summary, StringComparison.OrdinalIgnoreCase);
result = result | String.Compare(this.Title, value.Title, 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 the generic syndication feed using the supplied <see cref="AtomFeed"/>.
/// </summary>
/// <param name="feed">The <see cref="AtomFeed"/> to build an abstraction against.</param>
/// <exception cref="ArgumentNullException">The <paramref name="feed"/> is a null reference (Nothing in Visual Basic).</exception>
public void Parse(AtomFeed feed)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(feed, "feed");
//------------------------------------------------------------
// Initialize generic feed
//------------------------------------------------------------
feedResource = feed;
feedFormat = SyndicationContentFormat.Atom;
if (feed.Title != null && !String.IsNullOrEmpty(feed.Title.Content))
{
feedTitle = feed.Title.Content;
}
if (feed.Subtitle != null && !String.IsNullOrEmpty(feed.Title.Content))
{
feedDescription = feed.Subtitle.Content;
}
if (feed.UpdatedOn != DateTime.MinValue)
{
feedLastUpdatedOn = feed.UpdatedOn;
}
if(feed.Language != null)
{
feedLanguage = feed.Language;
}
foreach(AtomCategory category in feed.Categories)
{
GenericSyndicationCategory genericCategory = new GenericSyndicationCategory(category);
feedCategories.Add(genericCategory);
}
foreach(AtomEntry entry in feed.Entries)
{
GenericSyndicationItem genericItem = new GenericSyndicationItem(entry);
((Collection<GenericSyndicationItem>)feedItems).Add(genericItem);
}
}
/// <summary>
/// Initializes the generic syndication feed using the supplied <see cref="RssFeed"/>.
/// </summary>
/// <param name="feed">The <see cref="RssFeed"/> to build an abstraction against.</param>
/// <exception cref="ArgumentNullException">The <paramref name="feed"/> is a null reference (Nothing in Visual Basic).</exception>
public void Parse(RssFeed feed)
{
//------------------------------------------------------------
// Validate parameters
//------------------------------------------------------------
Guard.ArgumentNotNull(feed, "feed");
//------------------------------------------------------------
// Initialize generic feed
//------------------------------------------------------------
feedResource = feed;
feedFormat = SyndicationContentFormat.Rss;
if (!String.IsNullOrEmpty(feed.Channel.Title))
{
feedTitle = feed.Channel.Title;
}
if (!String.IsNullOrEmpty(feed.Channel.Description))
{
feedDescription = feed.Channel.Description;
}
if (feed.Channel.LastBuildDate != DateTime.MinValue)
{
feedLastUpdatedOn = feed.Channel.LastBuildDate;
}
if (feed.Channel.Language != null)
{
feedLanguage = feed.Channel.Language;
}
foreach (RssCategory category in feed.Channel.Categories)
{
GenericSyndicationCategory genericCategory = new GenericSyndicationCategory(category);
feedCategories.Add(genericCategory);
}
foreach (RssItem item in feed.Channel.Items)
{
GenericSyndicationItem genericItem = new GenericSyndicationItem(item);
((Collection<GenericSyndicationItem>)feedItems).Add(genericItem);
}
}
