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//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.ServiceModel.Activities
{
using System.Activities;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Runtime;
using System.ServiceModel.Channels;
using System.ServiceModel.Dispatcher;
using SR2 = System.ServiceModel.Activities.SR;
class FromRequest : NativeActivity
{
Collection<OutArgument> parameters;
public InOutArgument<Message> Message
{
get;
set;
}
public IDispatchMessageFormatter Formatter
{
get;
set;
}
public Collection<OutArgument> Parameters
{
get
{
if (this.parameters == null)
{
this.parameters = new Collection<OutArgument>();
}
return this.parameters;
}
}
public InArgument<NoPersistHandle> NoPersistHandle
{
get;
set;
}
internal bool CloseMessage
{
get;
set;
}
protected override void CacheMetadata(NativeActivityMetadata metadata)
{
RuntimeArgument messageArgument = new RuntimeArgument(Constants.Message, Constants.MessageType, ArgumentDirection.InOut, true);
metadata.Bind(this.Message, messageArgument);
metadata.AddArgument(messageArgument);
if (this.parameters != null)
{
int count = 0;
foreach (OutArgument parameter in this.parameters)
{
RuntimeArgument parameterArgument = new RuntimeArgument(Constants.Parameter + count++, parameter.ArgumentType, ArgumentDirection.Out);
metadata.Bind(parameter, parameterArgument);
metadata.AddArgument(parameterArgument);
}
}
RuntimeArgument noPersistHandleArgument = new RuntimeArgument(Constants.NoPersistHandle, Constants.NoPersistHandleType, ArgumentDirection.In);
metadata.Bind(this.NoPersistHandle, noPersistHandleArgument);
metadata.AddArgument(noPersistHandleArgument);
}
protected override void Execute(NativeActivityContext context)
{
Message inMessage = null;
try
{
inMessage = this.Message.Get(context);
object[] outObjects;
if (this.parameters == null || this.parameters.Count == 0)
{
outObjects = Constants.EmptyArray;
}
else
{
outObjects = new object[this.parameters.Count];
}
// The formatter would be null if there is no parameters to Deserialize in message contracts
if (this.Formatter != null)
{
this.Formatter.DeserializeRequest(inMessage, outObjects);
}
else
{
Fx.Assert(this.parameters == null, "There shouldn't be any parameters to be deserialized");
}
if (this.parameters != null)
{
for (int i = 0; i < this.parameters.Count; i++)
{
OutArgument outArgument = this.parameters[i];
Fx.Assert(outArgument != null, "Parameter cannot be null");
object obj = outObjects[i];
if (obj == null)
{
obj = ProxyOperationRuntime.GetDefaultParameterValue(outArgument.ArgumentType);
}
outArgument.Set(context, obj);
}
}
}
finally
{
if (this.CloseMessage && inMessage != null)
{
inMessage.Close();
}
this.Message.Set(context, null);
bool useNoPersistHandle = UseNoPersistHandle(context);
if (useNoPersistHandle)
{
NoPersistHandle handle = (this.NoPersistHandle == null) ? null : this.NoPersistHandle.Get(context);
if (handle != null)
{
handle.Exit(context);
}
}
}
}
static bool UseNoPersistHandle(NativeActivityContext executionContext)
{
// Default is set to true because we want NoPersistHandle to be
// used if the SendReceiveExtension is not available.
bool result = true;
SendReceiveExtension sendReceiveExtension = executionContext.GetExtension<SendReceiveExtension>();
if (sendReceiveExtension != null)
{
result = sendReceiveExtension.HostSettings.UseNoPersistHandle;
}
return result;
}
}
}
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