//
// TODO: at some point it may be necessary to pass in the current version as a parameter if the transforms become
// more complicated.
//
/// <summary>
/// Constructor. We read all the XML sent from the server, do our version manipulation, then write the new XML
/// into our inner responseStream object.
/// </summary>
/// <param name="responseStream">This object should be the responseStream from a WebResponse object.</param>
public UddiResponseStream(Stream responseStream)
{
try
{
//
// Get the XML the server sent to us.
//
StreamReader reader = new StreamReader(responseStream);
string responseXml = reader.ReadToEnd();
reader.Close();
//
// TODO: Consider making this class more generic, ie. have a IUddiResponseHandler interface:
// IUddiResponseHandler
// string HandleResponse( string xml );
//
//
// Translate the incoming XML into the current version.
//
string transformedXml = UddiVersionSupport.Translate(responseXml, UddiVersionSupport.CurrentVersion);
//
// Write this transformed XML into the 'real' stream.
//
StreamUtility.WriteStringToStream(this, transformedXml);
}
finally
{
this.Position = 0;
}
}
/// <summary>
/// Before we actually close the request stream, we want to manipulate the XML.
/// </summary>
public override void Close()
{
try
{
//
// Rewind ourselves.
//
this.Position = 0;
//
// Read the XML that was written; this is the XML request that will be sent to the Uddi server.
//
StreamReader reader = new StreamReader(this);
string requestXml = reader.ReadToEnd();
//
// TODO: Consider making this class more generic, ie. have a IUddiRequestHandler interface:
// IUddiResponseHandler
// string HandleRequest( string xml );
//
//
// Transform the content to a correct version on the server if we are not using the current version.
//
string transformedXml = requestXml;
if (uddiVersion != UddiVersionSupport.CurrentVersion)
{
transformedXml = UddiVersionSupport.Translate(requestXml, uddiVersion);
}
//
// Write the transformed data to the 'real' stream.
//
StreamUtility.WriteStringToStream(innerStream, transformedXml);
}
finally
{
//
// Make sure we clean up properly.
//
innerStream.Close();
base.Close();
}
}