/// <summary>
/// Validate about attribute.
/// </summary>
/// <param name="rac"></param>
private void ValidateAbout(RdfVersion version, RdfAboutCollection rac)
{
if (version == RdfVersion.RDF_1_0)
{
string about = this.GetAbout();
if (about == null || about == string.Empty)
{
string msg = string.Format(Rdf.RDF_ERRORMESSAGE_VALIDATION_NOT_UNIQUE_ABOUT_1_0, RDF_ELEMENT_CHANNEL);
throw new SyndicationValidationException(msg);
}
about = about.Trim();
bool validUrl = false;
foreach (string prefix in Rdf.RDF_VALIDVALUES_URL_1_0)
{
if (about.StartsWith(prefix))
{
validUrl = true;
break;
}
}
if (!validUrl)
{
string msg = string.Format(Rdf.RDF_ERRORMESSAGE_VALIDATION_URL_WRONG_TYPE_1_0, RDF_ELEMENT_CHANNEL + "," + RDF_ATTRIBUTE_ABOUT, about);
throw new SyndicationValidationException(msg);
}
if (!rac.IsUnique(about))
{
string msg = string.Format(Rdf.RDF_ERRORMESSAGE_VALIDATION_NOT_UNIQUE_ABOUT_1_0, RDF_ELEMENT_CHANNEL);
throw new SyndicationValidationException(msg);
}
}
}
/// <summary>
/// Validates about attribute.
/// </summary>
/// <param name="version"></param>
/// <param name="rac"></param>
private void ValidateAbout(RdfVersion version, RdfAboutCollection rac)
{
if (version == RdfVersion.RDF_1_0)
{
if (!rac.IsUnique(this.GetAbout()))
{
string msg = string.Format(Rdf.RDF_ERRORMESSAGE_VALIDATION_NOT_UNIQUE_ABOUT_1_0, RDF_ELEMENT_ITEM);
throw new SyndicationValidationException(msg);
}
}
}
