/// <summary>
/// Given the metadata of a graph and a collection resource, it reconstructs the RDF collection and returns it as a list of nodes
/// This is needed for building the " rdf:parseType=Collection>" RDF/XML abbreviation goody for collections of resources
/// </summary>
internal static List <XmlNode> ReconstructCollection(RDFGraphMetadata rdfGraphMetadata, RDFResource tripleObject, XmlDocument rdfDoc)
{
List <XmlNode> result = new List <XmlNode>();
Boolean nilFound = false;
XmlNode collElementToAppend = null;
XmlAttribute collElementAttr = null;
XmlText collElementAttrText = null;
//Iterate the elements of the collection until the last one (pointing to next="rdf:nil")
while (!nilFound)
{
var collElement = rdfGraphMetadata.Collections[tripleObject];
collElementToAppend = rdfDoc.CreateNode(XmlNodeType.Element, RDFVocabulary.RDF.PREFIX + ":Description", RDFVocabulary.RDF.BASE_URI);
collElementAttr = rdfDoc.CreateAttribute(RDFVocabulary.RDF.PREFIX + ":about", RDFVocabulary.RDF.BASE_URI);
collElementAttrText = rdfDoc.CreateTextNode(collElement.ItemValue.ToString());
if (collElementAttrText.InnerText.StartsWith("bnode:"))
{
collElementAttrText.InnerText = collElementAttrText.InnerText.Replace("bnode:", String.Empty);
}
collElementAttr.AppendChild(collElementAttrText);
collElementToAppend.Attributes.Append(collElementAttr);
result.Add(collElementToAppend);
//Verify if this is the last element of the collection (pointing to next="rdf:nil")
if (collElement.ItemNext.ToString().Equals(RDFVocabulary.RDF.NIL.ToString(), StringComparison.Ordinal))
{
nilFound = true;
}
else
{
tripleObject = collElement.ItemNext as RDFResource;
}
}
return(result);
}
/// <summary>
/// Given the metadata of a graph and a collection resource, it reconstructs the RDF collection and returns it as a list of nodes
/// This is needed for building the " rdf:parseType=Collection>" RDF/XML abbreviation goody for collections of resources
/// </summary>
internal static List<XmlNode> ReconstructCollection(RDFGraphMetadata rdfGraphMetadata, RDFResource tripleObject, XmlDocument rdfDoc) {
List<XmlNode> result = new List<XmlNode>();
Boolean nilFound = false;
XmlNode collElementToAppend = null;
XmlAttribute collElementAttr = null;
XmlText collElementAttrText = null;
//Iterate the elements of the collection until the last one (pointing to next="rdf:nil")
while (!nilFound) {
var collElement = rdfGraphMetadata.Collections[tripleObject];
collElementToAppend = rdfDoc.CreateNode(XmlNodeType.Element, RDFVocabulary.RDF.PREFIX + ":Description", RDFVocabulary.RDF.BASE_URI);
collElementAttr = rdfDoc.CreateAttribute(RDFVocabulary.RDF.PREFIX + ":about", RDFVocabulary.RDF.BASE_URI);
collElementAttrText = rdfDoc.CreateTextNode(collElement.ItemValue.ToString());
if (collElementAttrText.InnerText.StartsWith("bnode:")) {
collElementAttrText.InnerText = collElementAttrText.InnerText.Replace("bnode:", String.Empty);
}
collElementAttr.AppendChild(collElementAttrText);
collElementToAppend.Attributes.Append(collElementAttr);
result.Add(collElementToAppend);
//Verify if this is the last element of the collection (pointing to next="rdf:nil")
if (collElement.ItemNext.ToString().Equals(RDFVocabulary.RDF.NIL.ToString(), StringComparison.Ordinal)) {
nilFound = true;
}
else {
tripleObject = collElement.ItemNext as RDFResource;
}
}
return result;
}
