msi: Implement adding columns using the ALTER command.

dlls/msi/alter.c

@@ -39,6 +39,7 @@ typedef struct tagMSIALTERVIEW
     MSIVIEW        view;
     MSIDATABASE   *db;
     MSIVIEW       *table;
+    column_info   *colinfo;
     INT hold;
 } MSIALTERVIEW;
 
@@ -60,6 +61,78 @@ static UINT ALTER_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, ISt
     return ERROR_FUNCTION_FAILED;
 }
 
+static UINT ITERATE_columns(MSIRECORD *row, LPVOID param)
+{
+    (*(UINT *)param)++;
+    return ERROR_SUCCESS;
+}
+
+static BOOL check_column_exists(MSIDATABASE *db, MSIVIEW *columns, LPCWSTR table, LPCWSTR column)
+{
+    MSIQUERY *view;
+    MSIRECORD *rec;
+    UINT r;
+
+    static const WCHAR query[] = {
+        'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
+        '`','_','C','o','l','u','m','n','s','`',' ','W','H','E','R','E',' ',
+        '`','T','a','b','l','e','`','=','\'','%','s','\'',' ','A','N','D',' ',
+        '`','N','a','m','e','`','=','\'','%','s','\'',0
+    };
+
+    r = MSI_OpenQuery(db, &view, query, table, column);
+    if (r != ERROR_SUCCESS)
+        return FALSE;
+
+    r = MSI_ViewExecute(view, NULL);
+    if (r != ERROR_SUCCESS)
+        goto done;
+
+    r = MSI_ViewFetch(view, &rec);
+    if (r == ERROR_SUCCESS)
+        msiobj_release(&rec->hdr);
+
+done:
+    msiobj_release(&view->hdr);
+    return (r == ERROR_SUCCESS);
+}
+
+static UINT alter_add_column(MSIALTERVIEW *av)
+{
+    UINT r, colnum = 1;
+    MSIQUERY *view;
+    MSIVIEW *columns;
+
+    static const WCHAR szColumns[] = {'_','C','o','l','u','m','n','s',0};
+    static const WCHAR query[] = {
+        'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
+        '`','_','C','o','l','u','m','n','s','`',' ','W','H','E','R','E',' ',
+        '`','T','a','b','l','e','`','=','\'','%','s','\'',' ','O','R','D','E','R',' ',
+        'B','Y',' ','`','N','u','m','b','e','r','`',0
+    };
+
+    r = TABLE_CreateView(av->db, szColumns, &columns);
+    if (r != ERROR_SUCCESS)
+        return r;
+
+    if (check_column_exists(av->db, columns, av->colinfo->table, av->colinfo->column))
+        return ERROR_BAD_QUERY_SYNTAX;
+
+    r = MSI_OpenQuery(av->db, &view, query, av->colinfo->table, av->colinfo->column);
+    if (r == ERROR_SUCCESS)
+    {
+        r = MSI_IterateRecords(view, NULL, ITERATE_columns, &colnum);
+        msiobj_release(&view->hdr);
+    }
+
+    r = columns->ops->add_column(columns, av->colinfo->table,
+                                 colnum, av->colinfo->column,
+                                 av->colinfo->type);
+
+    msiobj_release(&columns->hdr);
+    return r;
+}
+
 static UINT ALTER_execute( struct tagMSIVIEW *view, MSIRECORD *record )
 {
     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
@@ -70,6 +143,8 @@ static UINT ALTER_execute( struct tagMSIVIEW *view, MSIRECORD *record )
         av->table->ops->add_ref(av->table);
     else if (av->hold == -1)
         av->table->ops->release(av->table);
+    else
+        return alter_add_column(av);
 
     return ERROR_SUCCESS;
 }
@@ -147,9 +222,10 @@ static const MSIVIEWOPS alter_ops =
     ALTER_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
-UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, int hold )
+UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, column_info *colinfo, int hold )
 {
     MSIALTERVIEW *av;
     UINT r;
@@ -164,10 +240,14 @@ UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, int hold )
     if (r != ERROR_SUCCESS || !av->table)
         return r;
 
+    if (colinfo)
+        colinfo->table = name;
+
     /* fill the structure */
     av->view.ops = &alter_ops;
     av->db = db;
     av->hold = hold;
+    av->colinfo = colinfo;
 
     *view = &av->view;
 

dlls/msi/create.c

@@ -132,6 +132,7 @@ static const MSIVIEWOPS create_ops =
     CREATE_delete,
     NULL,
     NULL,
+    NULL,
 };
 
 static UINT check_columns( column_info *col_info )

dlls/msi/delete.c

@@ -195,6 +195,7 @@ static const MSIVIEWOPS delete_ops =
     DELETE_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )

dlls/msi/distinct.c

@@ -284,6 +284,7 @@ static const MSIVIEWOPS distinct_ops =
     DISTINCT_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 UINT DISTINCT_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table )

dlls/msi/insert.c

@@ -235,6 +235,7 @@ static const MSIVIEWOPS insert_ops =
     INSERT_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 static UINT count_column_info( const column_info *ci )

dlls/msi/join.c

@@ -255,6 +255,7 @@ static const MSIVIEWOPS join_ops =
     JOIN_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view,

dlls/msi/msipriv.h

@@ -231,6 +231,11 @@ typedef struct tagMSIVIEWOPS
      * release - decreases the reference count of the table
      */
     UINT (*release)( struct tagMSIVIEW *view );
+
+    /*
+     * add_column - adds a column to the table
+     */
+    UINT (*add_column)( struct tagMSIVIEW *view, LPCWSTR table, UINT number, LPCWSTR column, UINT type );
 } MSIVIEWOPS;
 
 struct tagMSIVIEW

dlls/msi/order.c

@@ -284,6 +284,7 @@ static const MSIVIEWOPS order_ops =
     ORDER_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 static UINT ORDER_AddColumn( MSIORDERVIEW *ov, LPCWSTR name )

dlls/msi/query.h

@@ -122,7 +122,7 @@ UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table );
 UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view,
                       LPCWSTR left, LPCWSTR right );
 
-UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, int hold );
+UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, column_info *colinfo, int hold );
 
 UINT STREAMS_CreateView( MSIDATABASE *db, MSIVIEW **view );
 

dlls/msi/select.c

@@ -277,6 +277,7 @@ static const MSIVIEWOPS select_ops =
     SELECT_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 static UINT SELECT_AddColumn( MSISELECTVIEW *sv, LPCWSTR name )

dlls/msi/sql.y

@@ -83,7 +83,7 @@ static struct expr * EXPR_wildcard( void *info );
 }
 
 %token TK_ALTER TK_AND TK_BY TK_CHAR TK_COMMA TK_CREATE TK_DELETE
-%token TK_DISTINCT TK_DOT TK_EQ TK_FREE TK_FROM TK_GE TK_GT TK_HOLD
+%token TK_DISTINCT TK_DOT TK_EQ TK_FREE TK_FROM TK_GE TK_GT TK_HOLD TK_ADD
 %token <str> TK_ID
 %token TK_ILLEGAL TK_INSERT TK_INT
 %token <str> TK_INTEGER
@@ -231,11 +231,21 @@ onealter:
             SQL_input* sql = (SQL_input*) info;
             MSIVIEW *alter = NULL;
 
-            ALTER_CreateView( sql->db, &alter, $3, $4 );
+            ALTER_CreateView( sql->db, &alter, $3, NULL, $4 );
             if( !alter )
                 YYABORT;
             $$ = alter;
         }
+  | TK_ALTER TK_TABLE table TK_ADD column_and_type
+        {
+            SQL_input *sql = (SQL_input *)info;
+            MSIVIEW *alter = NULL;
+
+            ALTER_CreateView( sql->db, &alter, $3, $5, 0 );
+            if (!alter)
+                YYABORT;
+            $$ = alter;
+        }
     ;
 
 alterop:

dlls/msi/streams.c

@@ -339,6 +339,7 @@ static const MSIVIEWOPS streams_ops =
     STREAMS_find_matching_rows,
     NULL,
     NULL,
+    NULL,
 };
 
 static UINT add_streams_to_table(MSISTREAMSVIEW *sv)

dlls/msi/table.c

@@ -97,8 +97,8 @@ static const WCHAR szType[]    = { 'T','y','p','e',0 };
  * Do not mark them const.
  */
 static MSICOLUMNINFO _Columns_cols[4] = {
-    { szColumns, 1, szTable,  MSITYPE_VALID | MSITYPE_STRING | 64, 0 },
-    { szColumns, 2, szNumber, MSITYPE_VALID | 2,                   2 },
+    { szColumns, 1, szTable,  MSITYPE_VALID | MSITYPE_STRING | MSITYPE_KEY | 64, 0 },
+    { szColumns, 2, szNumber, MSITYPE_VALID | MSITYPE_KEY | 2,     2 },
     { szColumns, 3, szName,   MSITYPE_VALID | MSITYPE_STRING | 64, 4 },
     { szColumns, 4, szType,   MSITYPE_VALID | 2,                   6 },
 };
@@ -1035,6 +1035,26 @@ static UINT get_tablecolumns( MSIDATABASE *db,
     return ERROR_SUCCESS;
 }
 
+static void msi_update_table_columns( MSIDATABASE *db, LPCWSTR name )
+{
+    MSITABLE *table;
+    UINT size, offset;
+    int n;
+
+    table = find_cached_table( db, name );
+    msi_free( table->colinfo );
+    table_get_column_info( db, name, &table->colinfo, &table->col_count );
+
+    size = msi_table_get_row_size( table->colinfo, table->col_count );
+    offset = table->colinfo[table->col_count - 1].offset;
+
+    for ( n = 0; n < table->row_count; n++ )
+    {
+        table->data[n] = msi_realloc( table->data[n], size );
+        table->data[n][offset] = (BYTE)MSI_NULL_INTEGER;
+    }
+}
+
 /* try to find the table name in the _Tables table */
 BOOL TABLE_Exists( MSIDATABASE *db, LPCWSTR name )
 {
@@ -1674,6 +1694,32 @@ static UINT TABLE_release(struct tagMSIVIEW *view)
     return ref;
 }
 
+static UINT TABLE_add_column(struct tagMSIVIEW *view, LPCWSTR table, UINT number, LPCWSTR column, UINT type)
+{
+    MSITABLEVIEW *tv = (MSITABLEVIEW*)view;
+    MSIRECORD *rec;
+    UINT r;
+
+    rec = MSI_CreateRecord(4);
+    if (!rec)
+        return ERROR_OUTOFMEMORY;
+
+    MSI_RecordSetStringW(rec, 1, table);
+    MSI_RecordSetInteger(rec, 2, number);
+    MSI_RecordSetStringW(rec, 3, column);
+    MSI_RecordSetInteger(rec, 4, type);
+
+    r = TABLE_insert_row(&tv->view, rec, FALSE);
+    if (r != ERROR_SUCCESS)
+        goto done;
+
+    msi_update_table_columns(tv->db, table);
+
+done:
+    msiobj_release(&rec->hdr);
+    return r;
+}
+
 static const MSIVIEWOPS table_ops =
 {
     TABLE_fetch_int,
@@ -1690,6 +1736,7 @@ static const MSIVIEWOPS table_ops =
     TABLE_find_matching_rows,
     TABLE_add_ref,
     TABLE_release,
+    TABLE_add_column,
 };
 
 UINT TABLE_CreateView( MSIDATABASE *db, LPCWSTR name, MSIVIEW **view )
@@ -1977,26 +2024,6 @@ static UINT msi_table_find_row( MSITABLEVIEW *tv, MSIRECORD *rec, UINT *row )
     return r;
 }
 
-static void msi_update_table_columns( MSIDATABASE *db, LPWSTR name )
-{
-    MSITABLE *table;
-    UINT size, offset;
-    int n;
-
-    table = find_cached_table( db, name );
-    msi_free( table->colinfo );
-    table_get_column_info( db, name, &table->colinfo, &table->col_count );
-
-    size = msi_table_get_row_size( table->colinfo, table->col_count );
-    offset = table->colinfo[table->col_count - 1].offset;
-
-    for ( n = 0; n < table->row_count; n++ )
-    {
-        table->data[n] = msi_realloc( table->data[n], size );
-        table->data[n][offset] = (BYTE)MSI_NULL_INTEGER;
-    }
-}
-
 typedef struct
 {
     struct list entry;