/// <summary>
/// Saves the current <see cref="IBlogMLCommonObject"/> attributes to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="source">A object that implements the <see cref="IBlogMLCommonObject"/> interface to extract BlogML common object information from.</param>
/// <param name="writer">The <see cref="XmlWriter"/> to which the <paramref name="source"/> information will be written.</param>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public static void WriteCommonObjectAttributes(IBlogMLCommonObject source, XmlWriter writer)
{
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(writer, "writer");
if (!String.IsNullOrEmpty(source.Id))
{
writer.WriteAttributeString("id", source.Id);
}
if (source.CreatedOn != DateTime.MinValue)
{
writer.WriteAttributeString("date-created", SyndicationDateTimeUtility.ToRfc3339DateTime(source.CreatedOn));
}
if (source.LastModifiedOn != DateTime.MinValue)
{
writer.WriteAttributeString("date-modified", SyndicationDateTimeUtility.ToRfc3339DateTime(source.LastModifiedOn));
}
if (source.ApprovalStatus != BlogMLApprovalStatus.None)
{
writer.WriteAttributeString("approved", BlogMLUtility.ApprovalStatusAsString(source.ApprovalStatus));
}
}
/// <summary>
/// Saves the current <see cref="IBlogMLCommonObject"/> elements to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="source">A object that implements the <see cref="IBlogMLCommonObject"/> interface to extract BlogML common object information from.</param>
/// <param name="writer">The <see cref="XmlWriter"/> to which the <paramref name="source"/> information will be written.</param>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public static void WriteCommonObjectElements(IBlogMLCommonObject source, XmlWriter writer)
{
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(writer, "writer");
if (source.Title != null)
{
source.Title.WriteTo(writer, "title");
}
}
/// <summary>
/// Saves the current <see cref="IBlogMLCommonObject"/> elements to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="source">A object that implements the <see cref="IBlogMLCommonObject"/> interface to extract BlogML common object information from.</param>
/// <param name="writer">The <see cref="XmlWriter"/> to which the <paramref name="source"/> information will be written.</param>
/// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
public static void WriteCommonObjectElements(IBlogMLCommonObject source, XmlWriter writer)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(writer, "writer");
//------------------------------------------------------------
// Write common entity information
//------------------------------------------------------------
if (source.Title != null)
{
source.Title.WriteTo(writer, "title");
}
}
/// <summary>
/// Compares objects that implement the <see cref="IBlogMLCommonObject"/> interface.
/// </summary>
/// <param name="source">A object that implements the <see cref="IBlogMLCommonObject"/> interface to be compared.</param>
/// <param name="target">A object that implements the <see cref="IBlogMLCommonObject"/> to compare with the <paramref name="source"/>.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
public static int CompareCommonObjects(IBlogMLCommonObject source, IBlogMLCommonObject target)
{
//------------------------------------------------------------
// Local members
//------------------------------------------------------------
int result = 0;
//------------------------------------------------------------
// Handle parameter null reference cases
//------------------------------------------------------------
if (source == null && target == null)
{
return(0);
}
else if (source != null && target == null)
{
return(1);
}
else if (source == null && target != null)
{
return(-1);
}
//------------------------------------------------------------
// Attempt to perform comparison
//------------------------------------------------------------
result = source.ApprovalStatus.CompareTo(target.ApprovalStatus);
result = result | source.CreatedOn.CompareTo(target.CreatedOn);
result = result | String.Compare(source.Id, target.Id, StringComparison.OrdinalIgnoreCase);
result = result | source.LastModifiedOn.CompareTo(target.LastModifiedOn);
if (source.Title != null && target.Title != null)
{
result = result | source.Title.CompareTo(target.Title);
}
else if (source.Title != null && target.Title == null)
{
result = result | 1;
}
else if (source.Title == null && target.Title != null)
{
result = result | -1;
}
return(result);
}
/// <summary>
/// Compares objects that implement the <see cref="IBlogMLCommonObject"/> interface.
/// </summary>
/// <param name="source">A object that implements the <see cref="IBlogMLCommonObject"/> interface to be compared.</param>
/// <param name="target">A object that implements the <see cref="IBlogMLCommonObject"/> to compare with the <paramref name="source"/>.</param>
/// <returns>A 32-bit signed integer that indicates the relative order of the objects being compared.</returns>
public static int CompareCommonObjects(IBlogMLCommonObject source, IBlogMLCommonObject target)
{
int result = 0;
if (source == null && target == null)
{
return(0);
}
else if (source != null && target == null)
{
return(1);
}
else if (source == null && target != null)
{
return(-1);
}
result = source.ApprovalStatus.CompareTo(target.ApprovalStatus);
result = result | source.CreatedOn.CompareTo(target.CreatedOn);
result = result | String.Compare(source.Id, target.Id, StringComparison.OrdinalIgnoreCase);
result = result | source.LastModifiedOn.CompareTo(target.LastModifiedOn);
if (source.Title != null && target.Title != null)
{
result = result | source.Title.CompareTo(target.Title);
}
else if (source.Title != null && target.Title == null)
{
result = result | 1;
}
else if (source.Title == null && target.Title != null)
{
result = result | -1;
}
return(result);
}
/// <summary>
/// Modifies the <see cref="IBlogMLCommonObject"/> to match the data source.
/// </summary>
/// <param name="target">The object that implements the <see cref="IBlogMLCommonObject"/> interface to be filled.</param>
/// <param name="source">The <see cref="XPathNavigator"/> to extract BlogML common object information from.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the fill operation.</param>
/// <returns><b>true</b> if the <paramref name="target"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
/// <exception cref="ArgumentNullException">The <paramref name="target"/> is a null reference (Nothing in Visual Basic).</exception>
/// <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 static bool FillCommonObject(IBlogMLCommonObject target, XPathNavigator source, SyndicationResourceLoadSettings settings)
{
bool wasLoaded = false;
Guard.ArgumentNotNull(target, "target");
Guard.ArgumentNotNull(source, "source");
Guard.ArgumentNotNull(settings, "settings");
XmlNamespaceManager manager = BlogMLUtility.CreateNamespaceManager(source.NameTable);
if (source.HasAttributes)
{
string idAttribute = source.GetAttribute("id", String.Empty);
string dateCreatedAttribute = source.GetAttribute("date-created", String.Empty);
string dateModifiedAttribute = source.GetAttribute("date-modified", String.Empty);
string approvedAttribute = source.GetAttribute("approved", String.Empty);
if (!String.IsNullOrEmpty(idAttribute))
{
target.Id = idAttribute;
wasLoaded = true;
}
if (!String.IsNullOrEmpty(dateCreatedAttribute))
{
DateTime createdOn;
if (SyndicationDateTimeUtility.TryParseRfc3339DateTime(dateCreatedAttribute, out createdOn))
{
target.CreatedOn = createdOn;
wasLoaded = true;
}
else if (DateTime.TryParse(dateCreatedAttribute, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None, out createdOn))
{
target.CreatedOn = createdOn;
wasLoaded = true;
}
}
if (!String.IsNullOrEmpty(dateModifiedAttribute))
{
DateTime modifiedOn;
if (SyndicationDateTimeUtility.TryParseRfc3339DateTime(dateModifiedAttribute, out modifiedOn))
{
target.LastModifiedOn = modifiedOn;
wasLoaded = true;
}
else if (DateTime.TryParse(dateModifiedAttribute, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None, out modifiedOn))
{
target.LastModifiedOn = modifiedOn;
wasLoaded = true;
}
}
if (!String.IsNullOrEmpty(approvedAttribute))
{
BlogMLApprovalStatus status = BlogMLUtility.ApprovalStatusByValue(approvedAttribute);
if (status != BlogMLApprovalStatus.None)
{
target.ApprovalStatus = status;
wasLoaded = true;
}
}
}
if (source.HasChildren)
{
XPathNavigator titleNavigator = source.SelectSingleNode("blog:title", manager);
if (titleNavigator != null)
{
BlogMLTextConstruct title = new BlogMLTextConstruct();
if (title.Load(titleNavigator, settings))
{
target.Title = title;
wasLoaded = true;
}
}
}
return(wasLoaded);
}
