1
|
|
#region Copyright
|
2
|
|
|
3
|
|
|
4
|
|
|
5
|
|
|
6
|
|
|
7
|
|
|
8
|
|
|
9
|
|
|
10
|
|
|
11
|
|
|
12
|
|
|
13
|
|
|
14
|
|
|
15
|
|
|
16
|
|
|
17
|
|
#endregion
|
18
|
|
|
19
|
|
using System;
|
20
|
|
using System.Collections;
|
21
|
|
using System.Data;
|
22
|
|
using System.Text;
|
23
|
|
using Seasar.Framework.Util;
|
24
|
|
|
25
|
|
namespace Seasar.Extension.DataSets.States
|
26
|
|
{
|
27
|
|
public class ModifiedState : AbstractRowState
|
28
|
|
{
|
29
|
|
private static Hashtable sqlCache_ = new Hashtable();
|
30
|
|
|
31
|
|
private static Hashtable argNamesCache_ = new Hashtable();
|
32
|
|
|
33
|
0
|
public override string ToString()
|
34
|
|
{
|
35
|
|
return DataRowState.Modified.ToString();
|
36
|
|
}
|
37
|
|
|
38
|
1
|
protected override string GetSql(DataTable table)
|
39
|
|
{
|
40
|
1
|
string sql = null;
|
41
|
1
|
WeakReference reference = (WeakReference) sqlCache_[table];
|
42
|
1
|
if (reference == null || !reference.IsAlive)
|
43
|
|
{
|
44
|
1
|
sql = CreateSql(table);
|
45
|
1
|
sqlCache_.Add(table, new WeakReference(sql));
|
46
|
|
}
|
47
|
|
else
|
48
|
|
{
|
49
|
0
|
sql = (string) reference.Target;
|
50
|
|
}
|
51
|
1
|
return sql;
|
52
|
|
}
|
53
|
|
|
54
|
1
|
private static string CreateSql(DataTable table)
|
55
|
|
{
|
56
|
1
|
StringBuilder buf = new StringBuilder(100);
|
57
|
1
|
buf.Append("UPDATE ");
|
58
|
1
|
buf.Append(table.TableName);
|
59
|
1
|
buf.Append(" SET ");
|
60
|
1
|
foreach (DataColumn column in table.Columns)
|
61
|
|
{
|
62
|
3
|
if (!column.ReadOnly && !DataTableUtil.IsPrimaryKey(table, column))
|
63
|
|
{
|
64
|
1
|
buf.Append(column.ColumnName);
|
65
|
1
|
buf.AppendFormat(" = @{0}, ", column.ColumnName);
|
66
|
|
}
|
67
|
|
}
|
68
|
1
|
buf.Length -= 2;
|
69
|
1
|
buf.Append(" WHERE ");
|
70
|
1
|
foreach (DataColumn column in table.Columns)
|
71
|
|
{
|
72
|
3
|
if (DataTableUtil.IsPrimaryKey(table, column))
|
73
|
|
{
|
74
|
1
|
buf.Append(column.ColumnName);
|
75
|
1
|
buf.AppendFormat(" = @{0} AND ", column.ColumnName);
|
76
|
|
}
|
77
|
|
}
|
78
|
1
|
buf.Length -= 5;
|
79
|
|
|
80
|
1
|
return buf.ToString();
|
81
|
|
}
|
82
|
|
|
83
|
1
|
protected override string[] GetArgNames(DataTable table)
|
84
|
|
{
|
85
|
1
|
string[] argNames = null;
|
86
|
1
|
WeakReference reference = (WeakReference) argNamesCache_[table];
|
87
|
1
|
if (reference == null || !reference.IsAlive)
|
88
|
|
{
|
89
|
1
|
argNames = CreateArgNames(table);
|
90
|
1
|
argNamesCache_.Add(table, new WeakReference(argNames));
|
91
|
|
}
|
92
|
|
else
|
93
|
|
{
|
94
|
0
|
argNames = (string[]) reference.Target;
|
95
|
|
}
|
96
|
1
|
return argNames;
|
97
|
|
}
|
98
|
|
|
99
|
1
|
private static string[] CreateArgNames(DataTable table)
|
100
|
|
{
|
101
|
1
|
ArrayList argNames = new ArrayList();
|
102
|
4
|
for (int i = 0; i < table.Columns.Count; ++i)
|
103
|
|
{
|
104
|
3
|
DataColumn column = table.Columns[i];
|
105
|
3
|
if (!column.ReadOnly && !DataTableUtil.IsPrimaryKey(table, column))
|
106
|
|
{
|
107
|
1
|
argNames.Add(column.ColumnName);
|
108
|
|
}
|
109
|
|
}
|
110
|
4
|
for (int i = 0; i < table.Columns.Count; ++i)
|
111
|
|
{
|
112
|
3
|
DataColumn column = table.Columns[i];
|
113
|
3
|
if (DataTableUtil.IsPrimaryKey(table, column))
|
114
|
|
{
|
115
|
1
|
argNames.Add(column.ColumnName);
|
116
|
|
}
|
117
|
|
}
|
118
|
1
|
return (string[]) argNames.ToArray(typeof(string));
|
119
|
|
}
|
120
|
|
|
121
|
1
|
protected override object[] GetArgs(DataRow row)
|
122
|
|
{
|
123
|
1
|
DataTable table = row.Table;
|
124
|
1
|
ArrayList bindVariables = new ArrayList();
|
125
|
4
|
for (int i = 0; i < table.Columns.Count; ++i)
|
126
|
|
{
|
127
|
3
|
DataColumn column = table.Columns[i];
|
128
|
3
|
if (!column.ReadOnly && !DataTableUtil.IsPrimaryKey(table, column))
|
129
|
|
{
|
130
|
1
|
bindVariables.Add(row[i]);
|
131
|
|
}
|
132
|
|
}
|
133
|
4
|
for (int i = 0; i < table.Columns.Count; ++i)
|
134
|
|
{
|
135
|
3
|
DataColumn column = table.Columns[i];
|
136
|
3
|
if (DataTableUtil.IsPrimaryKey(table, column))
|
137
|
|
{
|
138
|
1
|
bindVariables.Add(row[i]);
|
139
|
|
}
|
140
|
|
}
|
141
|
1
|
return bindVariables.ToArray();
|
142
|
|
}
|
143
|
|
}
|
144
|
|
}
|
145
|
|
|