AddressHeader.cs :  » 2.6.4-mono-.net-core » System.ServiceModel » System » ServiceModel » Channels » C# / CSharp Open Source

//
// System.ServiceModel.AddressHeader.cs
//
// Authors:
//  Duncan Mak (duncan@novell.com)
//  Atsushi Enomoto (atsushi@ximian.com)
//
// Copyright (C) 2005,2010 Novell, Inc (http://www.novell.com)
//
// 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;
using System.IO;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Xml;
using System.Xml.Schema;

namespace System.ServiceModel.Channels{
  public abstract class AddressHeader
  {
    protected AddressHeader () {}

    public static AddressHeader CreateAddressHeader (object value)
    {
      return new DefaultAddressHeader (value);
    }

    public static AddressHeader CreateAddressHeader (object value, XmlObjectSerializer formatter)
    {
      return new DefaultAddressHeader (value, formatter);
    }

    public static AddressHeader CreateAddressHeader (string name, string ns, object value)
    {
      return new DefaultAddressHeader (name, ns, value);
    }

    public static AddressHeader CreateAddressHeader (string name, string ns, object value, 
                 XmlObjectSerializer formatter)
    {
      if (formatter == null)
        throw new ArgumentNullException ("formatter");
      return new DefaultAddressHeader (name, ns, value, formatter);
    }

    public override bool Equals (object obj)
    {
      AddressHeader o = obj as AddressHeader;

      if (o == null)
        return false;

      return o.Name == this.Name && o.Namespace == this.Namespace; 
    }

    public virtual XmlDictionaryReader GetAddressHeaderReader ()
    {
      var sw = new StringWriter ();
      var s = new XmlWriterSettings () { OmitXmlDeclaration = true };
      var xw = XmlDictionaryWriter.CreateDictionaryWriter (XmlWriter.Create (sw, s));
      WriteAddressHeader (xw);
      xw.Close ();
      return XmlDictionaryReader.CreateDictionaryReader (XmlReader.Create (new StringReader (sw.ToString ())));
    }

    public override int GetHashCode ()
    {
      return this.Name.GetHashCode () + this.Namespace.GetHashCode ();
    }

    public T GetValue<T> ()
    {
      return GetValue<T> (new DataContractSerializer (typeof (T)));
    }

    public T GetValue<T> (XmlObjectSerializer formatter)
    {
      return (T) formatter.ReadObject (GetAddressHeaderReader ());
    }

    protected abstract void OnWriteAddressHeaderContents (XmlDictionaryWriter writer);
    protected virtual void OnWriteStartAddressHeader (XmlDictionaryWriter writer)
    {
      if (Name != null && Namespace != null)
        writer.WriteStartElement (Name, Namespace);
    }

    public MessageHeader ToMessageHeader ()
    {
      throw new NotImplementedException ();      
    }

    public void WriteAddressHeader (XmlDictionaryWriter writer)
    {
      if (writer == null)
        throw new ArgumentNullException ("writer is null");
      
      this.WriteStartAddressHeader (writer);
      this.WriteAddressHeaderContents (writer);
      if (Name != null && Namespace != null)
        writer.WriteEndElement ();
    }

    public void WriteAddressHeader (XmlWriter writer)
    {
      this.WriteAddressHeader (XmlDictionaryWriter.CreateDictionaryWriter (writer));
    }

    public void WriteAddressHeaderContents (XmlDictionaryWriter writer)
    {
      this.OnWriteAddressHeaderContents (writer);
    }

    public void WriteStartAddressHeader (XmlDictionaryWriter writer)
    {
      this.OnWriteStartAddressHeader (writer);
    }

    public abstract string Name { get; }
    public abstract string Namespace { get; }

    internal class DefaultAddressHeader : AddressHeader
    {
      string name, ns;
      XmlObjectSerializer formatter;
      object value;

      internal DefaultAddressHeader (object value)
        : this (null, null, value) {}

      
      internal DefaultAddressHeader (object value, XmlObjectSerializer formatter)
        : this (null, null, value, formatter)
      {
      }

      internal DefaultAddressHeader (string name, string ns, object value)
        : this (name, ns, value, null) {}
      
      internal DefaultAddressHeader (string name, string ns, object value, XmlObjectSerializer formatter)
      {
        if (formatter == null)
          formatter = value != null ? new DataContractSerializer (value.GetType ()) : null;
        this.name = name;
        this.ns = ns;
        this.formatter = formatter;
        this.value = value;
      }

      public override string Name {
        get { return name; }
      }

      public override string Namespace {
        get { return ns; }
      }

      protected override void OnWriteAddressHeaderContents (XmlDictionaryWriter writer)
      {
        if (value == null)
          writer.WriteAttributeString ("i", "nil", "http://www.w3.org/2001/XMLSchema-instance", "true");
        else
          this.formatter.WriteObject (writer, value);
      }
    }
    
  }
}