private Type GetMemberType(Type type)
{
if (type.IsArray)
{
return(type.GetElementType());
}
if (InheritedGenericInterfacesHelper.ImplementsGenericInterface(typeof(IEnumerable <>), type))
{
Type[] interfaces = type.GetInterfaces();
foreach (Type interfac in interfaces)
{
if (interfac.IsGenericType && interfac.GetGenericTypeDefinition() == typeof(IEnumerable <object>).GetGenericTypeDefinition())
{
Type memberType = interfac.GetGenericArguments()[0];
if (memberType.GetCustomAttributes(typeof(OslcResourceShape), false).Length > 0)
{
return(memberType);
}
return(null);
}
}
}
return(null);
}
/// <summary>
/// Write a .NET object to an output stream
/// </summary>
/// <param name="type"></param>
/// <param name="value"></param>
/// <param name="writeStream"></param>
/// <param name="content"></param>
/// <param name="transportContext"></param>
/// <returns></returns>
public override Task WriteToStreamAsync(
Type type,
object value,
Stream writeStream,
HttpContent content,
TransportContext transportContext
)
{
return(Task.Factory.StartNew(() =>
{
if ((Graph == null) || (Graph.IsEmpty) || RebuildGraph)
{
if (ImplementsGenericType(typeof(FilteredResource <>), type))
{
PropertyInfo resourceProp = value.GetType().GetProperty("Resource");
Type[] actualTypeArguments = GetChildClassParameterArguments(typeof(FilteredResource <>), type);
object objects = resourceProp.GetValue(value, null);
PropertyInfo propertiesProp = value.GetType().GetProperty("Properties");
if (!ImplementsICollection(actualTypeArguments[0]))
{
objects = new EnumerableWrapper(objects);
}
if (ImplementsGenericType(typeof(ResponseInfo <>), type))
{
//Subject URI for the collection is the query capability
//TODO: should this be set by the app based on service provider info
int portNum = httpRequest.RequestUri.Port;
string portString = null;
if (portNum == 80 || portNum == 443)
{
portString = "";
}
else
{
portString = ":" + portNum.ToString();
}
string descriptionAbout = httpRequest.RequestUri.Scheme + "://" +
httpRequest.RequestUri.Host +
portString +
httpRequest.RequestUri.LocalPath;
//Subject URI for the responseInfo is the full request URI
string responseInfoAbout = httpRequest.RequestUri.ToString();
PropertyInfo totalCountProp = value.GetType().GetProperty("TotalCount");
PropertyInfo nextPageProp = value.GetType().GetProperty("NextPage");
Graph = DotNetRdfHelper.CreateDotNetRdfGraph(descriptionAbout, responseInfoAbout,
(string)nextPageProp.GetValue(value, null),
(int)totalCountProp.GetValue(value, null),
objects as IEnumerable <object>,
(IDictionary <string, object>)propertiesProp.GetValue(value, null));
}
else
{
Graph = DotNetRdfHelper.CreateDotNetRdfGraph(null, null, null, null, objects as IEnumerable <object>,
(IDictionary <string, object>)propertiesProp.GetValue(value, null));
}
}
else if (InheritedGenericInterfacesHelper.ImplementsGenericInterface(typeof(IEnumerable <>), value.GetType()))
{
Graph = DotNetRdfHelper.CreateDotNetRdfGraph(value as IEnumerable <object>);
}
else if (type.GetCustomAttributes(typeof(OslcResourceShape), false).Length > 0)
{
Graph = DotNetRdfHelper.CreateDotNetRdfGraph(new object[] { value });
}
else
{
Graph = DotNetRdfHelper.CreateDotNetRdfGraph(new EnumerableWrapper(value));
}
}
IRdfWriter rdfWriter;
if (content == null || content.Headers == null || content.Headers.ContentType.MediaType.Equals(OslcMediaType.APPLICATION_RDF_XML))
{
RdfXmlWriter rdfXmlWriter = new RdfXmlWriter();
rdfXmlWriter.UseDtd = false;
rdfXmlWriter.PrettyPrintMode = false;
rdfXmlWriter.CompressionLevel = 20;
//turtlelWriter.UseTypedNodes = false;
rdfWriter = rdfXmlWriter;
}
else if (content.Headers.ContentType.MediaType.Equals(OslcMediaType.TEXT_TURTLE))
{
TurtleWriter turtlelWriter = new TurtleWriter(TurtleSyntax.W3C);
turtlelWriter.PrettyPrintMode = false;
rdfWriter = turtlelWriter;
}
else
{
//For now, use the dotNetRDF RdfXmlWriter for application/xml
//OslcXmlWriter oslcXmlWriter = new OslcXmlWriter();
RdfXmlWriter oslcXmlWriter = new RdfXmlWriter();
oslcXmlWriter.UseDtd = false;
oslcXmlWriter.PrettyPrintMode = false;
oslcXmlWriter.CompressionLevel = 20;
rdfWriter = oslcXmlWriter;
}
StreamWriter streamWriter = new NonClosingStreamWriter(writeStream);
rdfWriter.Save(Graph, streamWriter);
}));
}
/// <summary>
/// Write a .NET object to an output stream
/// </summary>
/// <param name="type"></param>
/// <param name="value"></param>
/// <param name="writeStream"></param>
/// <param name="content"></param>
/// <param name="transportContext"></param>
/// <returns></returns>
public override Task WriteToStreamAsync(
Type type,
object value,
Stream writeStream,
HttpContent content,
TransportContext transportContext
)
{
return(Task.Factory.StartNew(() =>
{
if ((Json == null) || (Json.Count() == 0) || RebuildJson)
{
if (ImplementsGenericType(typeof(FilteredResource <>), type))
{
PropertyInfo resourceProp = value.GetType().GetProperty("Resource");
Type[] actualTypeArguments = GetChildClassParameterArguments(typeof(FilteredResource <>), type);
object objects = resourceProp.GetValue(value, null);
PropertyInfo propertiesProp = value.GetType().GetProperty("Properties");
if (!ImplementsICollection(actualTypeArguments[0]))
{
objects = new EnumerableWrapper(objects);
}
if (ImplementsGenericType(typeof(ResponseInfo <>), type))
{
//Subject URI for the collection is the query capability
//TODO: should this be set by the app based on service provider info
int portNum = httpRequest.RequestUri.Port;
string portString = null;
if (portNum == 80 || portNum == 443)
{
portString = "";
}
else
{
portString = ":" + portNum.ToString();
}
string descriptionAbout = httpRequest.RequestUri.Scheme + "://" +
httpRequest.RequestUri.Host +
portString +
httpRequest.RequestUri.LocalPath;
//Subject URI for the responseInfo is the full request URI
string responseInfoAbout = httpRequest.RequestUri.ToString();
PropertyInfo totalCountProp = value.GetType().GetProperty("TotalCount");
PropertyInfo nextPageProp = value.GetType().GetProperty("NextPage");
Json = JsonHelper.CreateJson(descriptionAbout, responseInfoAbout,
(string)nextPageProp.GetValue(value, null),
(int)totalCountProp.GetValue(value, null),
objects as IEnumerable <object>,
(IDictionary <string, object>)propertiesProp.GetValue(value, null));
}
else
{
Json = JsonHelper.CreateJson(null, null, null, null, objects as IEnumerable <object>,
(IDictionary <string, object>)propertiesProp.GetValue(value, null));
}
}
else if (InheritedGenericInterfacesHelper.ImplementsGenericInterface(typeof(IEnumerable <>), value.GetType()))
{
Json = JsonHelper.CreateJson(value as IEnumerable <object>);
}
else if (type.GetCustomAttributes(typeof(OslcResourceShape), false).Length > 0)
{
Json = JsonHelper.CreateJson(new object[] { value });
}
else
{
Json = JsonHelper.CreateJson(new EnumerableWrapper(value));
}
Debug.WriteLine("JsonMediaTypeFormatter.WriteToStreamAsync(): Generated JSON: " + Json);
}
Json.Save(writeStream);
}));
}
