//============================================================
// 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
//------------------------------------------------------------
FeedSynchronizationHistory value = obj as FeedSynchronizationHistory;
if (value != null)
{
int result = String.Compare(this.By, value.By, StringComparison.OrdinalIgnoreCase);
result = result | this.Sequence.CompareTo(value.Sequence);
result = result | this.When.CompareTo(value.When);
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="FeedSynchronizationItem"/> class using the supplied indentifier, number of updates, and initial <see cref="FeedSynchronizationHistory"/>.
/// </summary>
/// <param name="id">The globally unique identifier for the item.</param>
/// <param name="updates">The number of updates applied to this item.</param>
/// <param name="history">A <see cref="FeedSynchronizationHistory"/> object that represents the initial information about updates to this item.</param>
/// <exception cref="ArgumentNullException">The <paramref name="id"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="id"/> is an empty string.</exception>
/// <exception cref="ArgumentOutOfRangeException">The <paramref name="updates"/> is less than <b>1</b>.</exception>
/// <exception cref="ArgumentNullException">The <paramref name="history"/> is a null reference (Nothing in Visual Basic).</exception>
public FeedSynchronizationItem(string id, int updates, FeedSynchronizationHistory history) : this(id, updates)
{
//------------------------------------------------------------
// Initialize class state using guarded properties
//------------------------------------------------------------
Guard.ArgumentNotNull(history, "history");
this.Histories.Add(history);
}
/// <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);
}
FeedSynchronizationHistory value = obj as FeedSynchronizationHistory;
if (value != null)
{
int result = String.Compare(this.By, value.By, StringComparison.OrdinalIgnoreCase);
result = result | this.Sequence.CompareTo(value.Sequence);
result = result | this.When.CompareTo(value.When);
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");
}
}
//============================================================
// PUBLIC METHODS
//============================================================
#region Load(XPathNavigator source)
/// <summary>
/// Loads this <see cref="FeedSynchronizationItem"/> 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="FeedSynchronizationItem"/> 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="FeedSynchronizationItem"/>.
/// </remarks>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
public bool Load(XPathNavigator source)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
//------------------------------------------------------------
// Create namespace manager to resolve prefixed elements
//------------------------------------------------------------
FeedSynchronizationSyndicationExtension extension = new FeedSynchronizationSyndicationExtension();
XmlNamespaceManager manager = extension.CreateNamespaceManager(source);
//------------------------------------------------------------
// Attempt to extract syndication information
//------------------------------------------------------------
if (source.HasAttributes)
{
string idAttribute = source.GetAttribute("id", String.Empty);
string updatesAttribute = source.GetAttribute("updates", String.Empty);
string deletedAttribute = source.GetAttribute("deleted", String.Empty);
string noConflictsAttribute = source.GetAttribute("noconflicts", String.Empty);
if (!String.IsNullOrEmpty(idAttribute))
{
this.Id = idAttribute;
wasLoaded = true;
}
if (!String.IsNullOrEmpty(updatesAttribute))
{
int updates;
if (Int32.TryParse(updatesAttribute, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out updates))
{
this.Updates = updates;
wasLoaded = true;
}
}
if (!String.IsNullOrEmpty(deletedAttribute))
{
FeedSynchronizationTombstoneStatus status = FeedSynchronizationItem.TombstoneStatusByName(deletedAttribute);
if (status != FeedSynchronizationTombstoneStatus.None)
{
this.TombstoneStatus = status;
wasLoaded = true;
}
}
if (!String.IsNullOrEmpty(noConflictsAttribute))
{
FeedSynchronizationConflictPreservationDirective directive = FeedSynchronizationItem.ConflictPreservationByName(noConflictsAttribute);
if (directive != FeedSynchronizationConflictPreservationDirective.None)
{
this.ConflictPreservation = directive;
wasLoaded = true;
}
}
}
if (source.HasChildren)
{
XPathNodeIterator historyIterator = source.Select("sx:history", manager);
XPathNavigator conflictsNavigator = source.SelectSingleNode("sx:conflicts", manager);
if (historyIterator != null && historyIterator.Count > 0)
{
while (historyIterator.MoveNext())
{
FeedSynchronizationHistory history = new FeedSynchronizationHistory();
if (history.Load(historyIterator.Current))
{
this.Histories.Add(history);
wasLoaded = true;
}
}
}
if (conflictsNavigator != null && conflictsNavigator.HasChildren)
{
XPathNodeIterator childrenIterator = conflictsNavigator.SelectChildren(XPathNodeType.Element);
if (childrenIterator != null && childrenIterator.Count > 0)
{
this.Conflicts.Add(childrenIterator.Current);
wasLoaded = true;
}
}
}
return(wasLoaded);
}
/// <summary>
/// Initializes a new instance of the <see cref="FeedSynchronizationItem"/> class using the supplied indentifier, number of updates, and initial <see cref="FeedSynchronizationHistory"/>.
/// </summary>
/// <param name="id">The globally unique identifier for the item.</param>
/// <param name="updates">The number of updates applied to this item.</param>
/// <param name="history">A <see cref="FeedSynchronizationHistory"/> object that represents the initial information about updates to this item.</param>
/// <exception cref="ArgumentNullException">The <paramref name="id"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="id"/> is an empty string.</exception>
/// <exception cref="ArgumentOutOfRangeException">The <paramref name="updates"/> is less than <b>1</b>.</exception>
/// <exception cref="ArgumentNullException">The <paramref name="history"/> is a null reference (Nothing in Visual Basic).</exception>
public FeedSynchronizationItem(string id, int updates, FeedSynchronizationHistory history) : this(id, updates)
{
Guard.ArgumentNotNull(history, "history");
this.Histories.Add(history);
}
