c824d9e0f2330332f4477a25fd4a28a13a643759
[reactos.git] / reactos / dll / win32 / msi / delete.c
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
36 WINE_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
51 typedef struct tagMSIDELETEVIEW
52 {
53 MSIVIEW view;
54 MSIDATABASE *db;
55 MSIVIEW *table;
56 } MSIDELETEVIEW;
57
58 static UINT DELETE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
59 {
60 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
61
62 TRACE("%p %d %d %p\n", dv, row, col, val );
63
64 return ERROR_FUNCTION_FAILED;
65 }
66
67 static UINT DELETE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
68 {
69 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
70
71 TRACE("%p %d %d %p\n", dv, row, col, stm );
72
73 return ERROR_FUNCTION_FAILED;
74 }
75
76 static UINT DELETE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
77 {
78 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)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
103 static UINT DELETE_close( struct tagMSIVIEW *view )
104 {
105 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)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
115 static UINT DELETE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
116 {
117 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)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
129 static UINT DELETE_get_column_info( struct tagMSIVIEW *view,
130 UINT n, LPWSTR *name, UINT *type, BOOL *temporary )
131 {
132 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
133
134 TRACE("%p %d %p %p %p\n", dv, n, name, type, temporary );
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 );
141 }
142
143 static UINT DELETE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
144 MSIRECORD *rec, UINT row )
145 {
146 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
147
148 TRACE("%p %d %p\n", dv, eModifyMode, rec );
149
150 return ERROR_FUNCTION_FAILED;
151 }
152
153 static UINT DELETE_delete( struct tagMSIVIEW *view )
154 {
155 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
156
157 TRACE("%p\n", dv );
158
159 if( dv->table )
160 dv->table->ops->delete( dv->table );
161
162 msi_free( dv );
163
164 return ERROR_SUCCESS;
165 }
166
167 static UINT DELETE_find_matching_rows( struct tagMSIVIEW *view, UINT col,
168 UINT val, UINT *row, MSIITERHANDLE *handle )
169 {
170 TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
171
172 return ERROR_FUNCTION_FAILED;
173 }
174
175
176 static const MSIVIEWOPS delete_ops =
177 {
178 DELETE_fetch_int,
179 DELETE_fetch_stream,
180 NULL,
181 NULL,
182 NULL,
183 NULL,
184 DELETE_execute,
185 DELETE_close,
186 DELETE_get_dimensions,
187 DELETE_get_column_info,
188 DELETE_modify,
189 DELETE_delete,
190 DELETE_find_matching_rows,
191 NULL,
192 NULL,
193 NULL,
194 NULL,
195 NULL,
196 NULL,
197 };
198
199 UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )
200 {
201 MSIDELETEVIEW *dv = NULL;
202
203 TRACE("%p\n", dv );
204
205 dv = msi_alloc_zero( sizeof *dv );
206 if( !dv )
207 return ERROR_FUNCTION_FAILED;
208
209 /* fill the structure */
210 dv->view.ops = &delete_ops;
211 dv->db = db;
212 dv->table = table;
213
214 *view = &dv->view;
215
216 return ERROR_SUCCESS;
217 }