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Reactos
1/*
2 * Implementation of the Microsoft Installer (msi.dll)
3 *
4 * Copyright 2002-2005 Mike McCormack for CodeWeavers
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21#include <stdarg.h>
22
23#include "windef.h"
24#include "winbase.h"
25#include "winerror.h"
26#include "wine/debug.h"
27#include "msi.h"
28#include "msiquery.h"
29#include "objbase.h"
30#include "objidl.h"
31#include "msipriv.h"
32#include "winnls.h"
33
34#include "query.h"
35
36WINE_DEFAULT_DEBUG_CHANNEL(msidb);
37
38
39/*
40 * Code to delete rows from a table.
41 *
42 * We delete rows by blanking them out rather than trying to remove the row.
43 * This appears to be what the native MSI does (or tries to do). For the query:
44 *
45 * delete from Property
46 *
47 * some non-zero entries are left in the table by native MSI. I'm not sure if
48 * that's a bug in the way I'm running the query, or a just a bug.
49 */
50
51struct delete_view
52{
53 MSIVIEW view;
54 MSIDATABASE *db;
55 MSIVIEW *table;
56};
57
58static UINT DELETE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
59{
60 struct delete_view *dv = (struct delete_view *)view;
61
62 TRACE("%p %d %d %p\n", dv, row, col, val );
63
64 return ERROR_FUNCTION_FAILED;
65}
66
67static UINT DELETE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
68{
69 struct delete_view *dv = (struct delete_view *)view;
70
71 TRACE("%p %d %d %p\n", dv, row, col, stm );
72
73 return ERROR_FUNCTION_FAILED;
74}
75
76static UINT DELETE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
77{
78 struct delete_view *dv = (struct delete_view *)view;
79 UINT r, i, rows = 0, cols = 0;
80
81 TRACE("%p %p\n", dv, record);
82
83 if( !dv->table )
84 return ERROR_FUNCTION_FAILED;
85
86 r = dv->table->ops->execute( dv->table, record );
87 if( r != ERROR_SUCCESS )
88 return r;
89
90 r = dv->table->ops->get_dimensions( dv->table, &rows, &cols );
91 if( r != ERROR_SUCCESS )
92 return r;
93
94 TRACE("deleting %d rows\n", rows);
95
96 /* blank out all the rows that match */
97 for ( i=0; i<rows; i++ )
98 dv->table->ops->delete_row( dv->table, i );
99
100 return ERROR_SUCCESS;
101}
102
103static UINT DELETE_close( struct tagMSIVIEW *view )
104{
105 struct delete_view *dv = (struct delete_view *)view;
106
107 TRACE("%p\n", dv );
108
109 if( !dv->table )
110 return ERROR_FUNCTION_FAILED;
111
112 return dv->table->ops->close( dv->table );
113}
114
115static UINT DELETE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
116{
117 struct delete_view *dv = (struct delete_view *)view;
118
119 TRACE("%p %p %p\n", dv, rows, cols );
120
121 if( !dv->table )
122 return ERROR_FUNCTION_FAILED;
123
124 *rows = 0;
125
126 return dv->table->ops->get_dimensions( dv->table, NULL, cols );
127}
128
129static UINT DELETE_get_column_info( struct tagMSIVIEW *view, UINT n, LPCWSTR *name,
130 UINT *type, BOOL *temporary, LPCWSTR *table_name )
131{
132 struct delete_view *dv = (struct delete_view *)view;
133
134 TRACE("%p %d %p %p %p %p\n", dv, n, name, type, temporary, table_name );
135
136 if( !dv->table )
137 return ERROR_FUNCTION_FAILED;
138
139 return dv->table->ops->get_column_info( dv->table, n, name,
140 type, temporary, table_name);
141}
142
143static UINT DELETE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
144 MSIRECORD *rec, UINT row )
145{
146 struct delete_view *dv = (struct delete_view *)view;
147
148 TRACE("%p %d %p\n", dv, eModifyMode, rec );
149
150 return ERROR_FUNCTION_FAILED;
151}
152
153static UINT DELETE_delete( struct tagMSIVIEW *view )
154{
155 struct delete_view *dv = (struct delete_view *)view;
156
157 TRACE("%p\n", dv );
158
159 if( dv->table )
160 dv->table->ops->delete( dv->table );
161
162 free( dv );
163
164 return ERROR_SUCCESS;
165}
166
167static const MSIVIEWOPS delete_ops =
168{
169 DELETE_fetch_int,
170 DELETE_fetch_stream,
171 NULL,
172 NULL,
173 NULL,
174 NULL,
175 NULL,
176 NULL,
177 DELETE_execute,
178 DELETE_close,
179 DELETE_get_dimensions,
180 DELETE_get_column_info,
181 DELETE_modify,
182 DELETE_delete,
183 NULL,
184 NULL,
185 NULL,
186 NULL,
187 NULL,
188};
189
190UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )
191{
192 struct delete_view *dv = NULL;
193
194 TRACE("%p\n", dv );
195
196 dv = calloc( 1, sizeof *dv );
197 if( !dv )
198 return ERROR_FUNCTION_FAILED;
199
200 /* fill the structure */
201 dv->view.ops = &delete_ops;
202 dv->db = db;
203 dv->table = table;
204
205 *view = &dv->view;
206
207 return ERROR_SUCCESS;
208}