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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace MonoTests.DataSource
{
public class DynamicDataSourceView<T> : DataSourceView
{
#region Private fields
DynamicDataSource owner;
IDynamicDataContainer<T> dataContainer;
#endregion
#region Can* overrides
public override bool CanDelete
{
get { return true; }
}
public override bool CanInsert
{
get { return true; }
}
public override bool CanPage
{
get { return true; }
}
public override bool CanRetrieveTotalRowCount
{
get { return true; }
}
public override bool CanSort
{
get { return true; }
}
public override bool CanUpdate
{
get { return true; }
}
#endregion
public IDynamicDataContainer<T> DataContainerInstance
{
get
{
if (dataContainer != null)
return dataContainer;
object inst = owner.DataContainerInstance;
if (inst != null) {
dataContainer = inst as IDynamicDataContainer<T>;
if (dataContainer == null)
throw new InvalidOperationException (
"DynamicDataSource.DataContainerInstance must be set to an instance of '" + typeof (IDynamicDataContainer <T>) + "'.");
if (String.IsNullOrEmpty (dataContainer.TableName))
dataContainer.TableName = owner.EntitySetName;
return dataContainer;
}
string typeName = owner.DataContainerTypeName;
if (String.IsNullOrEmpty (typeName))
throw new InvalidOperationException ("DynamicDataSource '" + owner.ID + "' does not specify either data container instance or its type name.");
Type type = Type.GetType (typeName, true);
if (!typeof (IDynamicDataContainer<T>).IsAssignableFrom (type))
throw new InvalidOperationException ("Data container type '" + typeName + "' specified by DynamicDataSource '" + owner.ID + "' does not implement the IDynamicDataContainer interface.");
dataContainer = Activator.CreateInstance (type, owner.EntitySetName) as IDynamicDataContainer<T>;
if (dataContainer == null)
throw new InvalidOperationException ("Failed to create instance of data container type '" + typeName + "'.");
return dataContainer;
}
}
#region Constructors
public DynamicDataSourceView (DynamicDataSource owner, string viewName)
: base (owner, viewName)
{
this.owner = owner;
}
#endregion
#region DataSourceView methods
protected override int ExecuteDelete (IDictionary keys, IDictionary oldValues)
{
return DataContainerInstance.Delete (keys, oldValues);
}
protected override int ExecuteInsert (IDictionary values)
{
return DataContainerInstance.Insert (values);
}
protected override int ExecuteUpdate (IDictionary keys, IDictionary values, IDictionary oldValues)
{
return DataContainerInstance.Update (keys, values, oldValues);
}
protected override IEnumerable ExecuteSelect (DataSourceSelectArguments arguments)
{
return DataContainerInstance.Select (arguments, owner.Where, owner.WhereParameters);
}
#endregion
}
}
|
