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//
// DefaultOperationInvoker.cs
//
// Author: Atsushi Enomoto (atsushi@ximian.com)
//
// Copyright (C) 2009 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.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.Reflection;
using System.Threading;
namespace System.ServiceModel.Dispatcher
{
class DefaultOperationInvoker : IOperationInvoker
{
readonly OperationDescription od;
readonly ParameterInfo [] in_params, out_params;
readonly bool is_synchronous;
public DefaultOperationInvoker (OperationDescription od)
{
this.od = od;
is_synchronous = od.SyncMethod != null;
var mi = od.SyncMethod ?? od.BeginMethod;
var il = new List<ParameterInfo> ();
var ol = new List<ParameterInfo> ();
var pl = mi.GetParameters ();
int count = mi == od.BeginMethod ? pl.Length - 2 : pl.Length;
for (int i = 0; i < count; i++) {
var pi = pl [i];
if (!pi.IsOut)
il.Add (pi);
if (pi.IsOut || pi.ParameterType.IsByRef)
ol.Add (pi);
}
in_params = il.ToArray ();
out_params = ol.ToArray ();
}
public bool IsSynchronous {
get { return is_synchronous; }
}
public object [] AllocateInputs ()
{
return new object [in_params.Length];
}
public object Invoke (object instance, object [] inputs, out object [] outputs)
{
var arr = new object [od.SyncMethod.GetParameters ().Length];
for (int i = 0; i < in_params.Length; i++)
arr [in_params [i].Position] = inputs [i];
var ret = od.SyncMethod.Invoke (instance, arr);
outputs = new object [out_params.Length];
for (int i = 0; i < out_params.Length; i++)
outputs [i] = arr [out_params [i].Position];
return ret;
}
public IAsyncResult InvokeBegin (object instance, object [] inputs, AsyncCallback callback, object state)
{
var arr = new object [in_params.Length + out_params.Length + 2];
for (int i = 0; i < in_params.Length; i++)
arr [in_params [i].Position] = inputs [i];
arr [arr.Length - 2] = callback;
arr [arr.Length - 1] = state;
return new InvokeAsyncResult (arr, (IAsyncResult) od.BeginMethod.Invoke (instance, arr));
}
public object InvokeEnd (object instance, out object [] outputs, IAsyncResult result)
{
var r = (InvokeAsyncResult) result;
var ret = od.EndMethod.Invoke (instance, new object [] {r.Source});
var arr = r.Parameters;
outputs = new object [out_params.Length];
for (int i = 0; i < out_params.Length; i++)
outputs [i] = arr [out_params [i].Position];
return ret;
}
class InvokeAsyncResult : IAsyncResult
{
public InvokeAsyncResult (object [] parameters, IAsyncResult source)
{
Source = source;
Parameters = parameters;
}
public IAsyncResult Source;
public object [] Parameters;
public WaitHandle AsyncWaitHandle {
get { return Source.AsyncWaitHandle; }
}
public bool CompletedSynchronously {
get { return Source.CompletedSynchronously; }
}
public bool IsCompleted {
get { return Source.IsCompleted; }
}
public object AsyncState {
get { return Source.AsyncState; }
}
}
}
}
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