private XMLNodeInteraction FindNode(IInteraction parameters)
{
IInteraction candidate;
XMLNodeInteraction nodeInteraction = null;
// find an XmlNodeInteraction and hold on to that
if (parameters.TryGetClosest(typeof(XMLNodeInteraction), out candidate))
{
nodeInteraction = (XMLNodeInteraction)candidate;
}
// But if a new incoming body was acquired after that
if (parameters.TryGetClosest(typeof(IIncomingBodiedInteraction), nodeInteraction, out candidate))
{
// produce an XmlNodeInteraction from that instead.
IIncomingBodiedInteraction source = (IIncomingBodiedInteraction)candidate;
XmlDocument document = new XmlDocument();
document.Load(source.IncomingBody);
nodeInteraction = new XMLNodeInteraction(parameters, document, source);
}
if (nodeInteraction == null)
{
// bitter failure
throw new Exception("Couldn't find or produce XML document");
}
return(nodeInteraction);
}
protected override bool Process(IInteraction parameters)
{
IIncomingBodiedInteraction incoming = (IIncomingBodiedInteraction)parameters.GetClosest(typeof(IIncomingBodiedInteraction));
IOutgoingBodiedInteraction outgoing = (IOutgoingBodiedInteraction)parameters.GetClosest(typeof(IOutgoingBodiedInteraction));
incoming.IncomingBody.CopyTo(outgoing.OutgoingBody);
return(true);
}
public bool TryGetDatareader(IInteraction parameters, IInteraction until, out TextReader reader)
{
IInteraction candidate;
bool success;
if (IsForwardSourcing)
{
MemoryStream dataTarget = new MemoryStream();
SimpleOutgoingInteraction dataTargetInteraction;
dataTargetInteraction = new SimpleOutgoingInteraction(
dataTarget, this.Encoding, parameters);
success = ForwardSource.TryProcess(dataTargetInteraction);
dataTargetInteraction.Done();
dataTarget.Position = 0;
reader = new StreamReader(dataTarget, this.Encoding);
}
else if (IsVariableSourcing)
{
string value;
success = parameters.TryGetFallbackString(this.Variable, out value);
if (success)
{
reader = new StringReader(value);
}
else
{
reader = null;
}
}
else if (parameters.TryGetClosest(typeof(IIncomingBodiedInteraction), until, out candidate))
{
IIncomingBodiedInteraction source = (IIncomingBodiedInteraction)candidate;
success = CheckMimetype(source.ContentType);
reader = source.GetIncomingBodyReader();
}
else
{
success = false;
reader = null;
}
return(success);
}
public XMLNodeInteraction(IInteraction parameters, XmlNode node, IIncomingBodiedInteraction source)
: base(parameters)
{
this.Node = node;
this.Source = source;
this["node_name"] = this.Node.LocalName;
if (node.Attributes != null)
{
foreach (XmlAttribute attrib in node.Attributes)
{
this[attrib.Name] = attrib.Value;
}
}
}
