public Usage(JObjectWithUsages node, string property, JToken value)
{
Node = node;
Property = property;
Value = value;
}
private static bool IsWellFormedListNode(JObjectWithUsages node, string property, Dictionary <string, JArray> nodeUsagesMap)
{
// While property equals rdf:rest, the array value of the member of node usages map associated with the
// @id member of node has only one member, the value associated to the usages member of node has exactly 1 entry,
// node has a rdf:first and rdf:rest property, both of which have as value an array consisting of a single element,
// and node has no other members apart from an optional @type member whose value is an array with a single item equal
// to rdf:List, node represents a well-formed list node.
if (!RdfSpecsHelper.RdfListRest.Equals(property))
{
return(false);
}
var nodeId = node["@id"].Value <string>();
if (nodeId == null)
{
return(false);
}
// Not mentioned in spec, but if node is not a blank node we should not merge it into a list array
if (!JsonLdProcessor.IsBlankNodeIdentifier(nodeId))
{
return(false);
}
var mapEntry = nodeUsagesMap[nodeId] as JArray;
if (mapEntry == null || mapEntry.Count != 1)
{
return(false);
}
if (node.Usages.Count != 1)
{
return(false);
}
var first = node[RdfSpecsHelper.RdfListFirst] as JArray;
var rest = node[RdfSpecsHelper.RdfListRest] as JArray;
if (first == null || rest == null)
{
return(false);
}
if (first.Count != 1 || rest.Count != 1)
{
return(false);
}
var type = node["@type"] as JArray;
if (type != null && (type.Count != 1 ||
type.Count == 1 && !type[0].Value <string>().Equals(RdfSpecsHelper.RdfList)))
{
return(false);
}
var propCount = node.Properties().Count();
if (type == null && propCount != 3 || type != null && propCount != 4)
{
return(false);
}
return(true);
}