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//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.ServiceModel.Routing
{
using System;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.Xml;
using System.Runtime;
class DelegatingHeader : MessageHeader
{
int index;
MessageHeaderInfo info;
MessageHeaders originalHeaders;
public DelegatingHeader(MessageHeaderInfo info, MessageHeaders originalHeaders)
{
Fx.Assert(info != null, "info is required");
Fx.Assert(originalHeaders != null, "originalHeaders is required");
this.info = info;
this.originalHeaders = originalHeaders;
this.index = -1;
}
void EnsureIndex()
{
if (this.index < 0)
{
this.index = this.originalHeaders.FindHeader(this.info.Name, this.info.Namespace);
if (this.index < 0)
{
throw FxTrace.Exception.AsError(new InvalidOperationException(SR.SourceHeaderNotFound(this.info.Name, this.info.Namespace)));
}
}
}
protected override void OnWriteHeaderContents(XmlDictionaryWriter writer, MessageVersion messageVersion)
{
this.EnsureIndex();
this.originalHeaders.WriteHeaderContents(index, writer);
this.index = -1;
}
protected override void OnWriteStartHeader(XmlDictionaryWriter writer, MessageVersion messageVersion)
{
this.EnsureIndex();
this.originalHeaders.WriteStartHeader(this.index, writer);
}
public override string Name
{
get { return this.info.Name; }
}
public override string Namespace
{
get { return this.info.Namespace; }
}
public override bool MustUnderstand
{
get { return this.info.MustUnderstand; }
}
public override string Actor
{
get { return this.info.Actor; }
}
public override bool IsReferenceParameter
{
get { return this.info.IsReferenceParameter; }
}
public override bool Relay
{
get { return base.Relay; }
}
}
}
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