ContractReference.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » Services » Discovery » C# / CSharp Open Source

// 
// System.Web.Services.Discovery.ContractReference.cs
//
// Author:
//   Dave Bettin (javabettin@yahoo.com)
//   Lluis Sanchez Gual (lluis@ximian.com)
//
// Copyright (C) Dave Bettin, 2002
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System.IO;
using System.Web.Services.Description;
using System.Xml.Serialization;
using System.Xml;
using System.Xml.Schema;

namespace System.Web.Services.Discovery{

  [XmlRootAttribute("contractRef", Namespace="http://schemas.xmlsoap.org/disco/scl/", IsNullable=true)]
  public class ContractReference : DiscoveryReference {

    #region Fields
    
    public const string Namespace = "http://schemas.xmlsoap.org/disco/scl/";

    private ServiceDescription contract;
    private string defaultFilename;
    private string docRef;
    private string href;
    
    #endregion // Fields
    
    #region Constructors

    public ContractReference () 
    {
    }
    
    public ContractReference (string href) : this() 
    {
      this.href = href;
    }
    
    public ContractReference (string href, string docRef)
    {
      this.href = href;
      this.docRef = docRef;
    }
    
    #endregion // Constructors

    #region Properties

    [XmlIgnore]
    public ServiceDescription Contract {
      get {
        if (ClientProtocol == null) 
          throw new InvalidOperationException ("The ClientProtocol property is a null reference");
        
        ServiceDescription desc = ClientProtocol.Documents [Url] as ServiceDescription;
        if (desc == null)
          throw new Exception ("The Documents property of ClientProtocol does not contain a WSDL document with the url " + Url);
          
        return desc; 
      }
    }

    [XmlIgnore]
    public override string DefaultFilename {
      get { return FilenameFromUrl (Url) + ".wsdl"; }
    }
    
    [XmlAttribute("docRef")]
    public string DocRef {
      get { return docRef; }
      set { docRef = value; }
    }
    
    [XmlAttribute("ref")]
    public string Ref {
      get { return href; }
      set { href = value; }
    }
    
    [XmlIgnore]
    public override string Url {
      get { return href;}      
      set { href = value; }
    }
    
    #endregion // Properties

    #region Methods

    public override object ReadDocument (Stream stream)
    {
      return ServiceDescription.Read (stream);
    }
                
    protected internal override void Resolve (string contentType, Stream stream) 
    {
      ServiceDescription wsdl = ServiceDescription.Read (stream);
      
      if (!ClientProtocol.References.Contains (Url))
        ClientProtocol.References.Add (this);

      ClientProtocol.Documents.Add (Url, wsdl);
      ResolveInternal (ClientProtocol, wsdl);
    }
    
    internal void ResolveInternal (DiscoveryClientProtocol prot, ServiceDescription wsdl) 
    {
      if (wsdl.Imports == null) return;
      
      foreach (Import import in wsdl.Imports)
      {
        // Make relative uris to absoulte

        Uri uri = new Uri (BaseUri, import.Location);
        string url = uri.ToString ();

        if (prot.Documents.Contains (url))   // Already resolved
          continue;

        try
        {
          string contentType = null;
          Stream stream = prot.Download (ref url, ref contentType);
          XmlTextReader reader = new XmlTextReader (url, stream);
          reader.XmlResolver = null;
          reader.MoveToContent ();
          
          DiscoveryReference refe;
          if (ServiceDescription.CanRead (reader))
          {
            ServiceDescription refWsdl = ServiceDescription.Read (reader);
            refe = new ContractReference ();
            refe.ClientProtocol = prot;
            refe.Url = url;
            ((ContractReference)refe).ResolveInternal (prot, refWsdl);
            prot.Documents.Add (url, refWsdl);
          }
          else
          {
            XmlSchema schema = XmlSchema.Read (reader, null);
            refe = new SchemaReference ();
            refe.ClientProtocol = prot;
            refe.Url = url;
            prot.Documents.Add (url, schema);
          }
          
          if (!prot.References.Contains (url))
            prot.References.Add (refe);
            
          reader.Close ();
        }
        catch (Exception ex)
        {
          ReportError (url, ex);
        }
      }

      foreach (XmlSchema schema in wsdl.Types.Schemas)
      {
        // the schema itself is not added to the
        // references, but it has to resolve includes.
        Uri uri = BaseUri;
        string url = uri.ToString ();
        SchemaReference refe = new SchemaReference ();
        refe.ClientProtocol = prot;
        refe.Url = url;
        refe.ResolveInternal (prot, schema);
      }
    }
                
        public override void WriteDocument (object document, Stream stream) 
    {
      ((ServiceDescription)document).Write (stream);
    }

    #endregion // Methods
  }
}