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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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(msi);
  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
 193     msi_free( sv );
 194
 195     return ERROR_SUCCESS;
 196 }
 197
 198
 199 MSIVIEWOPS select_ops =
 200 {
 201     SELECT_fetch_int,
 202     SELECT_fetch_stream,
 203     SELECT_set_int,
 204     SELECT_insert_row,
 205     SELECT_execute,
 206     SELECT_close,
 207     SELECT_get_dimensions,
 208     SELECT_get_column_info,
 209     SELECT_modify,
 210     SELECT_delete
 211 };
 212
 213 static UINT SELECT_AddColumn( MSISELECTVIEW *sv, LPCWSTR name )
 214 {
 215     UINT r, n=0;
 216     MSIVIEW *table;
 217
 218     TRACE("%p adding %s\n", sv, debugstr_w( name ) );
 219
 220     if( sv->view.ops != &select_ops )
 221         return ERROR_FUNCTION_FAILED;
 222
 223     table = sv->table;
 224     if( !table )
 225         return ERROR_FUNCTION_FAILED;
 226     if( !table->ops->get_dimensions )
 227         return ERROR_FUNCTION_FAILED;
 228     if( !table->ops->get_column_info )
 229         return ERROR_FUNCTION_FAILED;
 230
 231     if( sv->num_cols >= sv->max_cols )
 232         return ERROR_FUNCTION_FAILED;
 233
 234     r = VIEW_find_column( table, name, &n );
 235     if( r != ERROR_SUCCESS )
 236         return r;
 237
 238     sv->cols[sv->num_cols] = n;
 239     TRACE("Translating column %s from %d -> %d\n",
 240           debugstr_w( name ), sv->num_cols, n);
 241
 242     sv->num_cols++;
 243
 244     return ERROR_SUCCESS;
 245 }
 246
 247 UINT SELECT_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table,
 248                         column_info *columns )
 249 {
 250     MSISELECTVIEW *sv = NULL;
 251     UINT count = 0, r;
 252
 253     TRACE("%p\n", sv );
 254
 255     r = table->ops->get_dimensions( table, NULL, &count );
 256     if( r != ERROR_SUCCESS )
 257     {
 258         ERR("can't get table dimensions\n");
 259         return r;
 260     }
 261
 262     sv = msi_alloc_zero( sizeof *sv + count*sizeof (UINT) );
 263     if( !sv )
 264         return ERROR_FUNCTION_FAILED;
 265
 266     /* fill the structure */
 267     sv->view.ops = &select_ops;
 268     sv->db = db;
 269     sv->table = table;
 270     sv->num_cols = 0;
 271     sv->max_cols = count;
 272
 273     while( columns )
 274     {
 275         r = SELECT_AddColumn( sv, columns->column );
 276         if( r )
 277             break;
 278         columns = columns->next;
 279     }
 280
 281     if( r != ERROR_SUCCESS )
 282     {
 283         sv->view.ops->delete( &sv->view );
 284         sv = NULL;
 285     }
 286
 287     *view = &sv->view;
 288
 289     return r;
 290 }