2 * Implementation of the Microsoft Installer (msi.dll)
4 * Copyright 2002-2005 Mike McCormack for CodeWeavers
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.
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.
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
26 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(msidb);
40 * Code to delete rows from a table.
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:
45 * delete from Property
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.
51 typedef struct tagMSIDELETEVIEW
58 static UINT DELETE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
60 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
62 TRACE("%p %d %d %p\n", dv, row, col, val );
64 return ERROR_FUNCTION_FAILED;
67 static UINT DELETE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
69 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
71 TRACE("%p %d %d %p\n", dv, row, col, stm );
73 return ERROR_FUNCTION_FAILED;
76 static UINT DELETE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
78 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
79 UINT r, i, rows = 0, cols = 0;
82 TRACE("%p %p\n", dv, record);
85 return ERROR_FUNCTION_FAILED;
87 r = dv->table->ops->execute( dv->table, record );
88 if( r != ERROR_SUCCESS )
91 r = dv->table->ops->get_dimensions( dv->table, &rows, &cols );
92 if( r != ERROR_SUCCESS )
95 TRACE("blanking %d rows\n", rows);
97 empty = MSI_CreateRecord( cols );
99 return ERROR_FUNCTION_FAILED;
101 /* blank out all the rows that match */
102 for ( i=0; i<rows; i++ )
103 dv->table->ops->set_row( dv->table, i, empty, (1<<cols)-1 );
105 msiobj_release( &empty->hdr );
107 return ERROR_SUCCESS;
110 static UINT DELETE_close( struct tagMSIVIEW *view )
112 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
117 return ERROR_FUNCTION_FAILED;
119 return dv->table->ops->close( dv->table );
122 static UINT DELETE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
124 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
126 TRACE("%p %p %p\n", dv, rows, cols );
129 return ERROR_FUNCTION_FAILED;
133 return dv->table->ops->get_dimensions( dv->table, NULL, cols );
136 static UINT DELETE_get_column_info( struct tagMSIVIEW *view,
137 UINT n, LPWSTR *name, UINT *type )
139 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
141 TRACE("%p %d %p %p\n", dv, n, name, type );
144 return ERROR_FUNCTION_FAILED;
146 return dv->table->ops->get_column_info( dv->table, n, name, type );
149 static UINT DELETE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
152 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
154 TRACE("%p %d %p\n", dv, eModifyMode, rec );
156 return ERROR_FUNCTION_FAILED;
159 static UINT DELETE_delete( struct tagMSIVIEW *view )
161 MSIDELETEVIEW *dv = (MSIDELETEVIEW*)view;
166 dv->table->ops->delete( dv->table );
170 return ERROR_SUCCESS;
173 static UINT DELETE_find_matching_rows( struct tagMSIVIEW *view, UINT col,
174 UINT val, UINT *row, MSIITERHANDLE *handle )
176 TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
178 return ERROR_FUNCTION_FAILED;
182 static const MSIVIEWOPS delete_ops =
191 DELETE_get_dimensions,
192 DELETE_get_column_info,
195 DELETE_find_matching_rows
198 UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )
200 MSIDELETEVIEW *dv = NULL;
204 dv = msi_alloc_zero( sizeof *dv );
206 return ERROR_FUNCTION_FAILED;
208 /* fill the structure */
209 dv->view.ops = &delete_ops;
215 return ERROR_SUCCESS;