dlls/msi/alter.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2006 Mike McCormack
   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
  33 #include "query.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msidb);
  36
  37 typedef struct tagMSIALTERVIEW
  38 {
  39     MSIVIEW        view;
  40     MSIDATABASE   *db;
  41     MSIVIEW       *table;
  42     column_info   *colinfo;
  43     INT hold;
  44 } MSIALTERVIEW;
  45
  46 static UINT ALTER_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
  47 {
  48     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  49
  50     TRACE("%p %d %d %p\n", av, row, col, val );
  51
  52     return ERROR_FUNCTION_FAILED;
  53 }
  54
  55 static UINT ALTER_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
  56 {
  57     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  58
  59     TRACE("%p %d %d %p\n", av, row, col, stm );
  60
  61     return ERROR_FUNCTION_FAILED;
  62 }
  63
  64 static UINT ALTER_execute( struct tagMSIVIEW *view, MSIRECORD *record )
  65 {
  66     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  67     UINT ref;
  68
  69     TRACE("%p %p\n", av, record);
  70
  71     if (av->colinfo)
  72         return av->table->ops->add_column(av->table, av->colinfo->column,
  73                 av->colinfo->type, av->hold == 1);
  74
  75     if (av->hold == 1)
  76         av->table->ops->add_ref(av->table);
  77     else if (av->hold == -1)
  78     {
  79         ref = av->table->ops->release(av->table);
  80         if (ref == 0)
  81             av->table = NULL;
  82     }
  83
  84     return ERROR_SUCCESS;
  85 }
  86
  87 static UINT ALTER_close( struct tagMSIVIEW *view )
  88 {
  89     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  90
  91     TRACE("%p\n", av );
  92
  93     return ERROR_SUCCESS;
  94 }
  95
  96 static UINT ALTER_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
  97 {
  98     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  99
 100     TRACE("%p %p %p\n", av, rows, cols );
 101
 102     return ERROR_FUNCTION_FAILED;
 103 }
 104
 105 static UINT ALTER_get_column_info( struct tagMSIVIEW *view, UINT n, LPCWSTR *name,
 106                                    UINT *type, BOOL *temporary, LPCWSTR *table_name )
 107 {
 108     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 109
 110     TRACE("%p %d %p %p %p %p\n", av, n, name, type, temporary, table_name );
 111
 112     return ERROR_FUNCTION_FAILED;
 113 }
 114
 115 static UINT ALTER_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
 116                           MSIRECORD *rec, UINT row )
 117 {
 118     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 119
 120     TRACE("%p %d %p\n", av, eModifyMode, rec );
 121
 122     return ERROR_FUNCTION_FAILED;
 123 }
 124
 125 static UINT ALTER_delete( struct tagMSIVIEW *view )
 126 {
 127     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 128
 129     TRACE("%p\n", av );
 130     if (av->table)
 131         av->table->ops->delete( av->table );
 132     msi_free( av );
 133
 134     return ERROR_SUCCESS;
 135 }
 136
 137 static const MSIVIEWOPS alter_ops =
 138 {
 139     ALTER_fetch_int,
 140     ALTER_fetch_stream,
 141     NULL,
 142     NULL,
 143     NULL,
 144     NULL,
 145     NULL,
 146     NULL,
 147     ALTER_execute,
 148     ALTER_close,
 149     ALTER_get_dimensions,
 150     ALTER_get_column_info,
 151     ALTER_modify,
 152     ALTER_delete,
 153     NULL,
 154     NULL,
 155     NULL,
 156     NULL,
 157     NULL,
 158 };
 159
 160 UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, column_info *colinfo, int hold )
 161 {
 162     MSIALTERVIEW *av;
 163     UINT r;
 164
 165     TRACE("%p %p %s %d\n", view, colinfo, debugstr_w(name), hold );
 166
 167     av = msi_alloc_zero( sizeof *av );
 168     if( !av )
 169         return ERROR_FUNCTION_FAILED;
 170
 171     r = TABLE_CreateView( db, name, &av->table );
 172     if (r != ERROR_SUCCESS)
 173     {
 174         msi_free( av );
 175         return r;
 176     }
 177
 178     if (colinfo)
 179         colinfo->table = name;
 180
 181     /* fill the structure */
 182     av->view.ops = &alter_ops;
 183     av->db = db;
 184     av->hold = hold;
 185     av->colinfo = colinfo;
 186
 187     *view = &av->view;
 188
 189     return ERROR_SUCCESS;
 190 }