dlls/msi/update.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 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 tagMSIUPDATEVIEW
  42 {
  43     MSIVIEW          view;
  44     MSIDATABASE     *db;
  45     MSIVIEW         *wv;
  46     column_info     *vals;
  47 } MSIUPDATEVIEW;
  48
  49 static UINT UPDATE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
  50 {
  51     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
  52
  53     TRACE("%p %d %d %p\n", uv, row, col, val );
  54
  55     return ERROR_FUNCTION_FAILED;
  56 }
  57
  58 static UINT UPDATE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
  59 {
  60     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
  61     UINT i, r, col_count = 0, row_count = 0;
  62     MSIRECORD *values = NULL;
  63     MSIRECORD *where = NULL;
  64     MSIVIEW *wv;
  65     UINT cols_count, where_count;
  66     column_info *col = uv->vals;
  67
  68     TRACE("%p %p\n", uv, record );
  69
  70     /* extract the where markers from the record */
  71     if (record)
  72     {
  73         r = MSI_RecordGetFieldCount(record);
  74
  75         for (i = 0; col; col = col->next)
  76             i++;
  77
  78         cols_count = i;
  79         where_count = r - i;
  80
  81         if (where_count > 0)
  82         {
  83             where = MSI_CreateRecord(where_count);
  84
  85             if (where)
  86                 for (i = 1; i <= where_count; i++)
  87                     MSI_RecordCopyField(record, cols_count + i, where, i);
  88         }
  89     }
  90
  91     wv = uv->wv;
  92     if( !wv )
  93     {
  94         r = ERROR_FUNCTION_FAILED;
  95         goto done;
  96     }
  97
  98     r = wv->ops->execute( wv, where );
  99     TRACE("tv execute returned %x\n", r);
 100     if( r )
 101         goto done;
 102
 103     r = wv->ops->get_dimensions( wv, &row_count, &col_count );
 104     if( r )
 105         goto done;
 106
 107     values = msi_query_merge_record( col_count, uv->vals, record );
 108     if (!values)
 109     {
 110         r = ERROR_FUNCTION_FAILED;
 111         goto done;
 112     }
 113
 114     for ( i=0; i<row_count; i++ )
 115     {
 116         r = wv->ops->set_row( wv, i, values, (1 << col_count) - 1 );
 117         if (r != ERROR_SUCCESS)
 118             break;
 119     }
 120
 121 done:
 122     if ( where ) msiobj_release( &where->hdr );
 123     if ( values ) msiobj_release( &values->hdr );
 124
 125     return r;
 126 }
 127
 128
 129 static UINT UPDATE_close( struct tagMSIVIEW *view )
 130 {
 131     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
 132     MSIVIEW *wv;
 133
 134     TRACE("%p\n", uv);
 135
 136     wv = uv->wv;
 137     if( !wv )
 138         return ERROR_FUNCTION_FAILED;
 139
 140     return wv->ops->close( wv );
 141 }
 142
 143 static UINT UPDATE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
 144 {
 145     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
 146     MSIVIEW *wv;
 147
 148     TRACE("%p %p %p\n", uv, rows, cols );
 149
 150     wv = uv->wv;
 151     if( !wv )
 152         return ERROR_FUNCTION_FAILED;
 153
 154     return wv->ops->get_dimensions( wv, rows, cols );
 155 }
 156
 157 static UINT UPDATE_get_column_info( struct tagMSIVIEW *view,
 158                 UINT n, LPWSTR *name, UINT *type, BOOL *temporary )
 159 {
 160     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
 161     MSIVIEW *wv;
 162
 163     TRACE("%p %d %p %p %p\n", uv, n, name, type, temporary );
 164
 165     wv = uv->wv;
 166     if( !wv )
 167         return ERROR_FUNCTION_FAILED;
 168
 169     return wv->ops->get_column_info( wv, n, name, type, temporary );
 170 }
 171
 172 static UINT UPDATE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
 173                            MSIRECORD *rec, UINT row )
 174 {
 175     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
 176
 177     TRACE("%p %d %p\n", uv, eModifyMode, rec );
 178
 179     return ERROR_FUNCTION_FAILED;
 180 }
 181
 182 static UINT UPDATE_delete( struct tagMSIVIEW *view )
 183 {
 184     MSIUPDATEVIEW *uv = (MSIUPDATEVIEW*)view;
 185     MSIVIEW *wv;
 186
 187     TRACE("%p\n", uv );
 188
 189     wv = uv->wv;
 190     if( wv )
 191         wv->ops->delete( wv );
 192     msiobj_release( &uv->db->hdr );
 193     msi_free( uv );
 194
 195     return ERROR_SUCCESS;
 196 }
 197
 198 static UINT UPDATE_find_matching_rows( struct tagMSIVIEW *view, UINT col, UINT val, UINT *row, MSIITERHANDLE *handle )
 199 {
 200     TRACE("%p %d %d %p\n", view, col, val, *handle );
 201
 202     return ERROR_FUNCTION_FAILED;
 203 }
 204
 205
 206 static const MSIVIEWOPS update_ops =
 207 {
 208     UPDATE_fetch_int,
 209     NULL,
 210     NULL,
 211     NULL,
 212     NULL,
 213     NULL,
 214     UPDATE_execute,
 215     UPDATE_close,
 216     UPDATE_get_dimensions,
 217     UPDATE_get_column_info,
 218     UPDATE_modify,
 219     UPDATE_delete,
 220     UPDATE_find_matching_rows,
 221     NULL,
 222     NULL,
 223     NULL,
 224     NULL,
 225     NULL,
 226 };
 227
 228 UINT UPDATE_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR table,
 229                         column_info *columns, struct expr *expr )
 230 {
 231     MSIUPDATEVIEW *uv = NULL;
 232     UINT r;
 233     MSIVIEW *tv = NULL, *sv = NULL, *wv = NULL;
 234
 235     TRACE("%p\n", uv );
 236
 237     r = TABLE_CreateView( db, table, &tv );
 238     if( r != ERROR_SUCCESS )
 239         return r;
 240
 241     if (expr)
 242     {
 243         /* add conditions first */
 244         r = WHERE_CreateView( db, &wv, tv, expr );
 245         if( r != ERROR_SUCCESS )
 246         {
 247             tv->ops->delete( tv );
 248             return r;
 249         }
 250     }
 251     else
 252        wv = tv;
 253
 254     /* then select the columns we want */
 255     r = SELECT_CreateView( db, &sv, wv, columns );
 256     if( r != ERROR_SUCCESS )
 257     {
 258         wv->ops->delete( wv );
 259         return r;
 260     }
 261
 262     uv = msi_alloc_zero( sizeof *uv );
 263     if( !uv )
 264     {
 265         wv->ops->delete( wv );
 266         return ERROR_FUNCTION_FAILED;
 267     }
 268
 269     /* fill the structure */
 270     uv->view.ops = &update_ops;
 271     msiobj_addref( &db->hdr );
 272     uv->db = db;
 273     uv->vals = columns;
 274     uv->wv = sv;
 275     *view = (MSIVIEW*) uv;
 276
 277     return ERROR_SUCCESS;
 278 }