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
115
116
117
118
119
|
// Copyright © 2008, 2010, Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
// MySQL Connectors. There are special exceptions to the terms and
// conditions of the GPLv2 as it is applied to this software, see the
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
using System;
using System.Collections.Generic;
using System.Text;
namespace MySql.Data.VisualStudio.DbObjects
{
internal interface ITablePart
{
string GetDropSql();
string GetSql(bool isNew);
bool HasChanges();
bool IsNew();
void Saved();
}
internal class TablePartCollection<T> : List<T>
{
public TablePartCollection()
{
Deleted = new List<T>();
}
private List<T> _deleted;
public List<T> Deleted
{
get { return _deleted; }
private set { _deleted = value; }
}
public void Delete(T t)
{
Deleted.Add(t);
}
public void Delete(int index)
{
ITablePart part = (ITablePart)this[index];
RemoveAt(index);
if (!part.IsNew())
Deleted.Add((T)part);
}
public bool HasChanges()
{
if (Deleted.Count > 0) return true;
foreach (ITablePart part in this)
if (part.HasChanges()) return true;
return false;
}
public void Saved()
{
Deleted.Clear();
foreach (ITablePart part in this)
part.Saved();
}
public string GetSql(bool newTable)
{
List<string> parts = new List<string>();
if (!newTable)
foreach (ITablePart part in Deleted)
parts.Add(part.GetDropSql());
// process new columns
for (int i = 0; i < Count; i++)
{
ITablePart part = (ITablePart)this[i];
string partSql = part.GetSql(newTable);
if (!String.IsNullOrEmpty(partSql))
{
if (part is Column && !newTable)
{
if (i == 0)
partSql += " FIRST";
else if (i < Count - 1)
{
Column c = this[i - 1] as Column;
partSql += String.Format(" AFTER {0}", c.ColumnName);
}
}
parts.Add(partSql);
}
}
string delimiter = "";
StringBuilder sql = new StringBuilder();
foreach (string s in parts)
{
sql.AppendFormat("{0}{1}", delimiter, s);
delimiter = ", ";
}
return sql.ToString();
}
}
}
|
