1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.ServiceModel.Activities
{
using System.Activities;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.Collections;
// The correlation scope has to derive from NativeActivity
// so that we can access execution properties from AEC.
//
public class CorrelationScope : NativeActivity
{
Variable<CorrelationHandle> declaredHandle; //
public CorrelationScope()
: base()
{
this.declaredHandle = new Variable<CorrelationHandle>();
}
// Explicit correlation OM
public InArgument<CorrelationHandle> CorrelatesWith
{
get;
set;
}
public Activity Body
{
get;
set;
}
protected override void CacheMetadata(NativeActivityMetadata metadata)
{
metadata.AddChild(this.Body);
metadata.SetImplementationVariablesCollection(
new Collection<Variable>
{
this.declaredHandle
});
RuntimeArgument correlatesWithArgument = new RuntimeArgument("CorrelatesWith", typeof(CorrelationHandle), ArgumentDirection.In);
metadata.Bind(this.CorrelatesWith, correlatesWithArgument);
metadata.SetArgumentsCollection(new Collection<RuntimeArgument> { correlatesWithArgument });
}
protected override void Execute(NativeActivityContext context)
{
if (this.Body != null)
{
CorrelationHandle ambientHandle = null;
if (this.CorrelatesWith != null && this.CorrelatesWith.Expression != null)
{
ambientHandle = this.CorrelatesWith.Get(context);
}
if (ambientHandle == null)
{
ambientHandle = this.declaredHandle.Get(context);
}
context.Properties.Add(CorrelationHandle.StaticExecutionPropertyName, ambientHandle);
context.ScheduleActivity(this.Body);
}
}
[EditorBrowsable(EditorBrowsableState.Never)]
public bool ShouldSerializeCorrelatesWith()
{
return this.CorrelatesWith != null && this.CorrelatesWith.Expression != null;
}
}
}
|
