/// <summary>
/// interface method that process the document
/// </summary>
/// <param name="doc">document containing the customer order</param>
/// <returns>response document</returns>
public IDocument ProcessDocument(IDocument doc)
{
IDocument request = null;
IDocument response = null;
nextComponent.Request = doc;
//Start each processing unit by calling Accept(v) method
while (nextComponent != null)
{
//trigger the process flow logics
nextComponent.Accept(v);
request = nextComponent.Request;
response = nextComponent.Response;
//set the next proessing unit
nextComponent = nextComponent.NextComponent;
//if this is the last processing unit, retrieve
//the request and response document
if (nextComponent != null)
{
nextComponent.Request = request;
nextComponent.Response = response;
}
}
//if next document layer exist, proceed with the next layer.
if (Next != null)
{
response = Next.ProcessDocument(response);
}
return(response);
}