/// <summary>
/// Initializes the syndication extension context using the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="source">The <b>XPathNavigator</b> used to load this <see cref="FeedSynchronizationSyndicationExtensionContext"/>.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> object used to resolve prefixed syndication extension elements and attributes.</param>
/// <returns><b>true</b> if the <see cref="FeedSynchronizationSyndicationExtensionContext"/> was able to be initialized using the supplied <paramref name="source"/>; otherwise <b>false</b>.</returns>
/// <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>
public bool Load(XPathNavigator source, XmlNamespaceManager manager)
{
bool wasLoaded = false;
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(manager, "manager");
if (source.HasChildren)
{
XPathNavigator sharingNavigator = source.SelectSingleNode("sx:sharing", manager);
XPathNavigator syncNavigator = source.SelectSingleNode("sx:sync", manager);
if (sharingNavigator != null)
{
FeedSynchronizationSharingInformation sharing = new FeedSynchronizationSharingInformation();
if (sharing.Load(sharingNavigator))
{
this.Sharing = sharing;
wasLoaded = true;
}
}
if (syncNavigator != null)
{
FeedSynchronizationItem synchronization = new FeedSynchronizationItem();
if (synchronization.Load(syncNavigator))
{
this.Synchronization = synchronization;
wasLoaded = true;
}
}
}
return(wasLoaded);
}
//============================================================
// 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
//------------------------------------------------------------
FeedSynchronizationItem value = obj as FeedSynchronizationItem;
if (value != null)
{
int result = String.Compare(this.Id, value.Id, StringComparison.OrdinalIgnoreCase);
result = result | this.ConflictPreservation.CompareTo(value.ConflictPreservation);
result = result | this.TombstoneStatus.CompareTo(value.TombstoneStatus);
result = result | this.Updates.CompareTo(value.Updates);
result = result | FeedSynchronizationItem.CompareSequence(this.Histories, value.Histories);
result = result | ComparisonUtility.CompareSequence(this.Conflicts, value.Conflicts);
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>
/// Saves the current <see cref="FeedSynchronizationItem"/> to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="writer">The <see cref="XmlWriter"/> to which you want to save.</param>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public void WriteTo(XmlWriter writer)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(writer, "writer");
//------------------------------------------------------------
// Create extension instance to retrieve XML namespace
//------------------------------------------------------------
FeedSynchronizationSyndicationExtension extension = new FeedSynchronizationSyndicationExtension();
//------------------------------------------------------------
// Write XML representation of the current instance
//------------------------------------------------------------
writer.WriteStartElement("sync", extension.XmlNamespace);
writer.WriteAttributeString("id", this.Id);
writer.WriteAttributeString("updates", this.Updates.ToString(NumberFormatInfo.InvariantInfo));
if (this.TombstoneStatus != FeedSynchronizationTombstoneStatus.None)
{
writer.WriteAttributeString("deleted", FeedSynchronizationItem.TombstoneStatusAsString(this.TombstoneStatus));
}
if (this.ConflictPreservation != FeedSynchronizationConflictPreservationDirective.None)
{
writer.WriteAttributeString("noconflicts", FeedSynchronizationItem.ConflictPreservationAsString(this.ConflictPreservation));
}
foreach (FeedSynchronizationHistory history in this.Histories)
{
history.WriteTo(writer);
}
if (this.Conflicts.Count > 0)
{
writer.WriteStartElement("conflicts", extension.XmlNamespace);
foreach (XPathNavigator conflict in this.Conflicts)
{
conflict.WriteSubtree(writer);
}
writer.WriteEndElement();
}
writer.WriteEndElement();
}
//============================================================
// PUBLIC METHODS
//============================================================
#region Load(XPathNavigator source, XmlNamespaceManager manager)
/// <summary>
/// Initializes the syndication extension context using the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="source">The <b>XPathNavigator</b> used to load this <see cref="FeedSynchronizationSyndicationExtensionContext"/>.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> object used to resolve prefixed syndication extension elements and attributes.</param>
/// <returns><b>true</b> if the <see cref="FeedSynchronizationSyndicationExtensionContext"/> was able to be initialized using the supplied <paramref name="source"/>; otherwise <b>false</b>.</returns>
/// <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>
public bool Load(XPathNavigator source, XmlNamespaceManager manager)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
bool wasLoaded = false;
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(manager, "manager");
//------------------------------------------------------------
// Attempt to extract syndication extension information
//------------------------------------------------------------
if (source.HasChildren)
{
XPathNavigator sharingNavigator = source.SelectSingleNode("sx:sharing", manager);
XPathNavigator syncNavigator = source.SelectSingleNode("sx:sync", manager);
if (sharingNavigator != null)
{
FeedSynchronizationSharingInformation sharing = new FeedSynchronizationSharingInformation();
if (sharing.Load(sharingNavigator))
{
this.Sharing = sharing;
wasLoaded = true;
}
}
if (syncNavigator != null)
{
FeedSynchronizationItem synchronization = new FeedSynchronizationItem();
if (synchronization.Load(syncNavigator))
{
this.Synchronization = synchronization;
wasLoaded = true;
}
}
}
return(wasLoaded);
}
//============================================================
// 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);
}