/// <summary>Outputs the RDF dataset found in the given JSON-LD object.</summary>
/// <remarks>Outputs the RDF dataset found in the given JSON-LD object.</remarks>
/// <param name="input">the JSON-LD input.</param>
/// <param name="callback"></param>
/// <param name="options"></param>
/// <exception cref="JsonLdError"></exception>
public static async Task <object> ToRdfAsync(JToken input,
IJsonLdTripleCallback callback,
JsonLdOptions options)
{
JToken expandedInput = await ExpandAsync(input, options);
var api = await JsonLdApi.CreateAsync(expandedInput, options);
var dataset = api.ToRdf();
// generate namespaces from context
if (options.useNamespaces)
{
JArray _input;
if (input is JArray array)
{
_input = array;
}
else
{
_input = new JArray();
_input.Add((JObject)input);
}
foreach (var e in _input)
{
if (((JObject)e).ContainsKey("@context"))
{
dataset.ParseContext((JObject)e["@context"]);
}
}
}
if (callback != null)
{
return(callback.Call(dataset));
}
if (options.format != null)
{
if ("application/nquads".Equals(options.format))
{
return(new NQuadTripleCallback().Call(dataset));
}
else
{
if ("text/turtle".Equals(options.format))
{
return(new TurtleTripleCallback().Call(dataset));
}
throw new JsonLdError(JsonLdError.Error.UnknownFormat, options.format);
}
}
return(dataset);
}
/// <exception cref="JsonLdError"></exception>
public static Task <object> ToRdfAsync(JToken input, IJsonLdTripleCallback callback)
{
return(ToRdfAsync(input, callback, new JsonLdOptions(string.Empty)));
}
