/// <summary>
/// Writes the current context to the specified <see cref="XmlWriter"/>.
/// </summary>
/// <param name="writer">The <b>XmlWriter</b> to which you want to write the current context.</param>
/// <param name="xmlNamespace">The XML namespace used to qualify prefixed syndication extension elements and attributes.</param>
/// <exception cref="ArgumentNullException">The <paramref name="writer"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="xmlNamespace"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="xmlNamespace"/> is an empty string.</exception>
public void WriteTo(XmlWriter writer, string xmlNamespace)
{
//------------------------------------------------------------
// Validate parameter
//------------------------------------------------------------
Guard.ArgumentNotNull(writer, "writer");
Guard.ArgumentNotNullOrEmptyString(xmlNamespace, "xmlNamespace");
//------------------------------------------------------------
// Write current extension details to the writer
//------------------------------------------------------------
if (this.Period != SiteSummaryUpdatePeriod.None)
{
writer.WriteElementString("updatePeriod", xmlNamespace, SiteSummaryUpdateSyndicationExtension.PeriodAsString(this.Period));
}
if (this.Frequency != Int32.MinValue)
{
writer.WriteElementString("updateFrequency", xmlNamespace, this.Frequency.ToString(System.Globalization.NumberFormatInfo.InvariantInfo));
}
if (this.Base != DateTime.MinValue)
{
writer.WriteElementString("updateBase", xmlNamespace, SyndicationDateTimeUtility.ToRfc3339DateTime(this.Base));
}
}
//============================================================
// 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
//------------------------------------------------------------
SiteSummaryUpdateSyndicationExtension value = obj as SiteSummaryUpdateSyndicationExtension;
if (value != null)
{
int result = this.Context.Base.CompareTo(value.Context.Base);
result = result | this.Context.Frequency.CompareTo(value.Context.Frequency);
result = result | this.Context.Period.CompareTo(value.Context.Period);
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, 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="SiteSummaryUpdateSyndicationExtensionContext"/>.</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="SiteSummaryUpdateSyndicationExtensionContext"/> 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 updatePeriodNavigator = source.SelectSingleNode("sy:updatePeriod", manager);
XPathNavigator updateFrequencyNavigator = source.SelectSingleNode("sy:updateFrequency", manager);
XPathNavigator updateBaseNavigator = source.SelectSingleNode("sy:updateBase", manager);
if (updatePeriodNavigator != null && !String.IsNullOrEmpty(updatePeriodNavigator.Value))
{
SiteSummaryUpdatePeriod period = SiteSummaryUpdateSyndicationExtension.PeriodByName(updatePeriodNavigator.Value);
if (period != SiteSummaryUpdatePeriod.None)
{
this.Period = period;
wasLoaded = true;
}
}
if (updateFrequencyNavigator != null)
{
int frequency;
if (Int32.TryParse(updateFrequencyNavigator.Value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out frequency))
{
this.Frequency = frequency;
wasLoaded = true;
}
}
if (updateBaseNavigator != null)
{
DateTime updateBase;
if (SyndicationDateTimeUtility.TryParseRfc3339DateTime(updateBaseNavigator.Value, out updateBase))
{
this.Base = updateBase;
wasLoaded = true;
}
}
}
return(wasLoaded);
}
/// <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);
}
SiteSummaryUpdateSyndicationExtension value = obj as SiteSummaryUpdateSyndicationExtension;
if (value != null)
{
int result = this.Context.Base.CompareTo(value.Context.Base);
result = result | this.Context.Frequency.CompareTo(value.Context.Frequency);
result = result | this.Context.Period.CompareTo(value.Context.Period);
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");
}
}
