dlls/msi/select.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2002-2004 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 /* below is the query interface to a table */
  40
  41 typedef struct tagMSISELECTVIEW
  42 {
  43     MSIVIEW        view;
  44     MSIDATABASE   *db;
  45     MSIVIEW       *table;
  46     UINT           num_cols;
  47     UINT           max_cols;
  48     UINT           cols[1];
  49 } MSISELECTVIEW;
  50
  51 static UINT SELECT_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
  52 {
  53     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
  54
  55     TRACE("%p %d %d %p\n", sv, row, col, val );
  56
  57     if( !sv->table )
  58          return ERROR_FUNCTION_FAILED;
  59
  60     if( (col==0) || (col>sv->num_cols) )
  61          return ERROR_FUNCTION_FAILED;
  62
  63     col = sv->cols[ col - 1 ];
  64
  65     return sv->table->ops->fetch_int( sv->table, row, col, val );
  66 }
  67
  68 static UINT SELECT_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
  69 {
  70     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
  71
  72     TRACE("%p %d %d %p\n", sv, row, col, stm );
  73
  74     if( !sv->table )
  75          return ERROR_FUNCTION_FAILED;
  76
  77     if( (col==0) || (col>sv->num_cols) )
  78          return ERROR_FUNCTION_FAILED;
  79
  80     col = sv->cols[ col - 1 ];
  81
  82     return sv->table->ops->fetch_stream( sv->table, row, col, stm );
  83 }
  84
  85 static UINT SELECT_set_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT val )
  86 {
  87     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
  88
  89     TRACE("%p %d %d %04x\n", sv, row, col, val );
  90
  91     if( !sv->table )
  92          return ERROR_FUNCTION_FAILED;
  93
  94     if( (col==0) || (col>sv->num_cols) )
  95          return ERROR_FUNCTION_FAILED;
  96
  97     col = sv->cols[ col - 1 ];
  98
  99     return sv->table->ops->set_int( sv->table, row, col, val );
 100 }
 101
 102 static UINT SELECT_insert_row( struct tagMSIVIEW *view, MSIRECORD *record )
 103 {
 104     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 105
 106     TRACE("%p %p\n", sv, record );
 107
 108     if( !sv->table )
 109          return ERROR_FUNCTION_FAILED;
 110
 111     return sv->table->ops->insert_row( sv->table, record );
 112 }
 113
 114 static UINT SELECT_execute( struct tagMSIVIEW *view, MSIRECORD *record )
 115 {
 116     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 117
 118     TRACE("%p %p\n", sv, record);
 119
 120     if( !sv->table )
 121          return ERROR_FUNCTION_FAILED;
 122
 123     return sv->table->ops->execute( sv->table, record );
 124 }
 125
 126 static UINT SELECT_close( struct tagMSIVIEW *view )
 127 {
 128     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 129
 130     TRACE("%p\n", sv );
 131
 132     if( !sv->table )
 133          return ERROR_FUNCTION_FAILED;
 134
 135     return sv->table->ops->close( sv->table );
 136 }
 137
 138 static UINT SELECT_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
 139 {
 140     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 141
 142     TRACE("%p %p %p\n", sv, rows, cols );
 143
 144     if( !sv->table )
 145          return ERROR_FUNCTION_FAILED;
 146
 147     if( cols )
 148         *cols = sv->num_cols;
 149
 150     return sv->table->ops->get_dimensions( sv->table, rows, NULL );
 151 }
 152
 153 static UINT SELECT_get_column_info( struct tagMSIVIEW *view,
 154                 UINT n, LPWSTR *name, UINT *type )
 155 {
 156     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 157
 158     TRACE("%p %d %p %p\n", sv, n, name, type );
 159
 160     if( !sv->table )
 161          return ERROR_FUNCTION_FAILED;
 162
 163     if( (n==0) || (n>sv->num_cols) )
 164          return ERROR_FUNCTION_FAILED;
 165
 166     n = sv->cols[ n - 1 ];
 167
 168     return sv->table->ops->get_column_info( sv->table, n, name, type );
 169 }
 170
 171 static UINT SELECT_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
 172                 MSIRECORD *rec )
 173 {
 174     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 175
 176     TRACE("%p %d %p\n", sv, eModifyMode, rec );
 177
 178     if( !sv->table )
 179          return ERROR_FUNCTION_FAILED;
 180
 181     return sv->table->ops->modify( sv->table, eModifyMode, rec );
 182 }
 183
 184 static UINT SELECT_delete( struct tagMSIVIEW *view )
 185 {
 186     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 187
 188     TRACE("%p\n", sv );
 189
 190     if( sv->table )
 191         sv->table->ops->delete( sv->table );
 192     sv->table = NULL;
 193
 194     msi_free( sv );
 195
 196     return ERROR_SUCCESS;
 197 }
 198
 199 static UINT SELECT_find_matching_rows( struct tagMSIVIEW *view, UINT col,
 200     UINT val, UINT *row, MSIITERHANDLE *handle )
 201 {
 202     MSISELECTVIEW *sv = (MSISELECTVIEW*)view;
 203
 204     TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
 205
 206     if( !sv->table )
 207          return ERROR_FUNCTION_FAILED;
 208
 209     if( (col==0) || (col>sv->num_cols) )
 210          return ERROR_FUNCTION_FAILED;
 211
 212     col = sv->cols[ col - 1 ];
 213
 214     return sv->table->ops->find_matching_rows( sv->table, col, val, row, handle );
 215 }
 216
 217
 218 static const MSIVIEWOPS select_ops =
 219 {
 220     SELECT_fetch_int,
 221     SELECT_fetch_stream,
 222     SELECT_set_int,
 223     SELECT_insert_row,
 224     SELECT_execute,
 225     SELECT_close,
 226     SELECT_get_dimensions,
 227     SELECT_get_column_info,
 228     SELECT_modify,
 229     SELECT_delete,
 230     SELECT_find_matching_rows
 231 };
 232
 233 static UINT SELECT_AddColumn( MSISELECTVIEW *sv, LPCWSTR name )
 234 {
 235     UINT r, n=0;
 236     MSIVIEW *table;
 237
 238     TRACE("%p adding %s\n", sv, debugstr_w( name ) );
 239
 240     if( sv->view.ops != &select_ops )
 241         return ERROR_FUNCTION_FAILED;
 242
 243     table = sv->table;
 244     if( !table )
 245         return ERROR_FUNCTION_FAILED;
 246     if( !table->ops->get_dimensions )
 247         return ERROR_FUNCTION_FAILED;
 248     if( !table->ops->get_column_info )
 249         return ERROR_FUNCTION_FAILED;
 250
 251     if( sv->num_cols >= sv->max_cols )
 252         return ERROR_FUNCTION_FAILED;
 253
 254     r = VIEW_find_column( table, name, &n );
 255     if( r != ERROR_SUCCESS )
 256         return r;
 257
 258     sv->cols[sv->num_cols] = n;
 259     TRACE("Translating column %s from %d -> %d\n",
 260           debugstr_w( name ), sv->num_cols, n);
 261
 262     sv->num_cols++;
 263
 264     return ERROR_SUCCESS;
 265 }
 266
 267 int select_count_columns( column_info *col )
 268 {
 269     int n;
 270     for (n = 0; col; col = col->next)
 271         n++;
 272     return n;
 273 }
 274
 275 UINT SELECT_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table,
 276                         column_info *columns )
 277 {
 278     MSISELECTVIEW *sv = NULL;
 279     UINT count = 0, r = ERROR_SUCCESS;
 280
 281     TRACE("%p\n", sv );
 282
 283     count = select_count_columns( columns );
 284
 285     sv = msi_alloc_zero( sizeof *sv + count*sizeof (UINT) );
 286     if( !sv )
 287         return ERROR_FUNCTION_FAILED;
 288
 289     /* fill the structure */
 290     sv->view.ops = &select_ops;
 291     sv->db = db;
 292     sv->table = table;
 293     sv->num_cols = 0;
 294     sv->max_cols = count;
 295
 296     while( columns )
 297     {
 298         r = SELECT_AddColumn( sv, columns->column );
 299         if( r )
 300             break;
 301         columns = columns->next;
 302     }
 303
 304     if( r == ERROR_SUCCESS )
 305         *view = &sv->view;
 306     else
 307         msi_free( sv );
 308
 309     return r;
 310 }