public override ItemLink[] GetReferrers(Item item)
{
Assert.ArgumentNotNull((object)item, "item");
var list = new List <ItemLink>();
lock (this.locks.GetLock((object)item.ID))
{
var g = LinkedDataManager.ReadGraph();
var literalNode = g.GetLiteralNode(LinkedDataManager.ItemToUri(item));
if (literalNode != null)
{
var items = g.GetTriplesWithObject(literalNode);
foreach (var triple in items)
{
var sourceItem = LinkedDataManager.UriToItem(triple.Subject.ToString());
var targetItem = LinkedDataManager.UriToItem(triple.Object.ToString());
//TODO: Need to hold somewhere in the triple the fieldId
list.Add(new ItemLink(sourceItem.Database.Name, sourceItem.ID, new ID("{A60ACD61-A6DB-4182-8329-C957982CEC74}"), targetItem.Database.Name, targetItem.ID, targetItem.Paths.FullPath));
}
}
}
return(list.ToArray());
}
public static IEnumerable <Triple> GetItemTriples(Item item)
{
var g = LinkedDataManager.ReadGraph();
var items = g.GetTriplesWithSubject(g.CreateUriNode(LinkedDataManager.ItemToUri(item)));
return(items);
}
public static void RemoveLinksForItem(Item item, ItemLink link)
{
var g = LinkedDataManager.ReadGraph();
var items = g.GetTriplesWithSubjectObject(
g.CreateUriNode(LinkedDataManager.ItemToUri(item)),
g.CreateLiteralNode(LinkedDataManager.ItemToUri(link.GetTargetItem())));
if (items != null && items.Any())
{
g.Retract(items.First());
WriteGraph(g);
}
}
public override int GetReferrerCount(Item item)
{
Assert.ArgumentNotNull((object)item, "item");
var g = LinkedDataManager.ReadGraph();
var items = g.GetTriplesWithObject(g.CreateUriNode(LinkedDataManager.ItemToUri(item)));
if (items != null)
{
return(items.Count());
}
return(0);
}
protected virtual void RemoveItemVersionLinks(Item item)
{
Assert.ArgumentNotNull((object)item, "item");
var g = LinkedDataManager.ReadGraph();
var items = g.GetTriplesWithSubject(g.CreateUriNode(LinkedDataManager.ItemToUri(item)));
foreach (var triple in items)
{
g.Retract(triple);
}
LinkedDataManager.WriteGraph(g);
}
public override void RemoveReferences(Item item)
{
Assert.ArgumentNotNull((object)item, "item");
var g = LinkedDataManager.ReadGraph();
var items = g.GetTriplesWithObject(g.CreateUriNode(LinkedDataManager.ItemToUri(item)));
foreach (var triple in items)
{
g.Retract(triple);
}
LinkedDataManager.WriteGraph(g);
LinkCounters.DataUpdated.Increment();
}
public static void AddLink(Item item, ItemLink link)
{
var g = LinkedDataManager.ReadGraph();
LinkedDataManager.WriteTriple(g, LinkedDataManager.ToTriple(g, item, link));
}