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Sweden-Number/dlls/msi/join.c

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/*
* Implementation of the Microsoft Installer (msi.dll)
*
* Copyright 2006 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "msi.h"
#include "msiquery.h"
#include "objbase.h"
#include "objidl.h"
#include "msipriv.h"
#include "query.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(msidb);
typedef struct tagJOINTABLE
{
struct list entry;
MSIVIEW *view;
UINT columns;
UINT rows;
UINT next_rows;
} JOINTABLE;
typedef struct tagMSIJOINVIEW
{
MSIVIEW view;
MSIDATABASE *db;
struct list tables;
UINT columns;
UINT rows;
} MSIJOINVIEW;
static UINT JOIN_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
UINT cols = 0;
UINT prev_rows = 1;
TRACE("%d, %d\n", row, col);
if (col == 0 || col > jv->columns)
return ERROR_FUNCTION_FAILED;
if (row >= jv->rows)
return ERROR_FUNCTION_FAILED;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
if (col <= cols + table->columns)
{
row = (row % (jv->rows / table->next_rows)) / prev_rows;
col -= cols;
break;
}
prev_rows *= table->rows;
cols += table->columns;
}
return table->view->ops->fetch_int( table->view, row, col, val );
}
static UINT JOIN_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
UINT cols = 0;
UINT prev_rows = 1;
TRACE("%p %d %d %p\n", jv, row, col, stm );
if (col == 0 || col > jv->columns)
return ERROR_FUNCTION_FAILED;
if (row >= jv->rows)
return ERROR_FUNCTION_FAILED;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
if (col <= cols + table->columns)
{
row = (row % (jv->rows / table->next_rows)) / prev_rows;
col -= cols;
break;
}
prev_rows *= table->rows;
cols += table->columns;
}
return table->view->ops->fetch_stream( table->view, row, col, stm );
}
static UINT JOIN_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p %d %p\n", jv, row, rec);
return msi_view_get_row( jv->db, view, row, rec );
}
static UINT JOIN_execute( struct tagMSIVIEW *view, MSIRECORD *record )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
UINT r, rows;
TRACE("%p %p\n", jv, record);
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
table->view->ops->execute(table->view, NULL);
r = table->view->ops->get_dimensions(table->view, &table->rows, NULL);
if (r != ERROR_SUCCESS)
{
ERR("failed to get table dimensions\n");
return r;
}
/* each table must have at least one row */
if (table->rows == 0)
{
jv->rows = 0;
return ERROR_SUCCESS;
}
if (jv->rows == 0)
jv->rows = table->rows;
else
jv->rows *= table->rows;
}
rows = jv->rows;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
rows /= table->rows;
table->next_rows = rows;
}
return ERROR_SUCCESS;
}
static UINT JOIN_close( struct tagMSIVIEW *view )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
TRACE("%p\n", jv );
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
table->view->ops->close(table->view);
}
return ERROR_SUCCESS;
}
static UINT JOIN_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p %p %p\n", jv, rows, cols );
if (cols)
*cols = jv->columns;
if (rows)
*rows = jv->rows;
return ERROR_SUCCESS;
}
static UINT JOIN_get_column_info( struct tagMSIVIEW *view,
UINT n, LPWSTR *name, UINT *type, BOOL *temporary,
LPWSTR *table_name )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
UINT cols = 0;
TRACE("%p %d %p %p %p %p\n", jv, n, name, type, temporary, table_name );
if (n == 0 || n > jv->columns)
return ERROR_FUNCTION_FAILED;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
if (n <= cols + table->columns)
return table->view->ops->get_column_info(table->view, n - cols,
name, type, temporary,
table_name);
cols += table->columns;
}
return ERROR_FUNCTION_FAILED;
}
static UINT JOIN_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
MSIRECORD *rec, UINT row )
{
TRACE("%p %d %p\n", view, eModifyMode, rec);
return ERROR_FUNCTION_FAILED;
}
static UINT JOIN_delete( struct tagMSIVIEW *view )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
struct list *item, *cursor;
TRACE("%p\n", jv );
LIST_FOR_EACH_SAFE(item, cursor, &jv->tables)
{
JOINTABLE* table = LIST_ENTRY(item, JOINTABLE, entry);
list_remove(&table->entry);
table->view->ops->delete(table->view);
table->view = NULL;
msi_free(table);
}
msi_free(jv);
return ERROR_SUCCESS;
}
static UINT JOIN_find_matching_rows( struct tagMSIVIEW *view, UINT col,
UINT val, UINT *row, MSIITERHANDLE *handle )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
UINT i, row_value;
TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
if (col == 0 || col > jv->columns)
return ERROR_INVALID_PARAMETER;
for (i = PtrToUlong(*handle); i < jv->rows; i++)
{
if (view->ops->fetch_int( view, i, col, &row_value ) != ERROR_SUCCESS)
continue;
if (row_value == val)
{
*row = i;
(*(UINT *)handle) = i + 1;
return ERROR_SUCCESS;
}
}
return ERROR_NO_MORE_ITEMS;
}
static UINT JOIN_sort(struct tagMSIVIEW *view, column_info *columns)
{
MSIJOINVIEW *jv = (MSIJOINVIEW *)view;
JOINTABLE *table;
UINT r;
TRACE("%p %p\n", view, columns);
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
r = table->view->ops->sort(table->view, columns);
if (r != ERROR_SUCCESS)
return r;
}
return ERROR_SUCCESS;
}
static const MSIVIEWOPS join_ops =
{
JOIN_fetch_int,
JOIN_fetch_stream,
JOIN_get_row,
NULL,
NULL,
NULL,
JOIN_execute,
JOIN_close,
JOIN_get_dimensions,
JOIN_get_column_info,
JOIN_modify,
JOIN_delete,
JOIN_find_matching_rows,
NULL,
NULL,
NULL,
NULL,
JOIN_sort,
NULL,
};
UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view, LPWSTR tables )
{
MSIJOINVIEW *jv = NULL;
UINT r = ERROR_SUCCESS;
JOINTABLE *table;
LPWSTR ptr;
TRACE("%p (%s)\n", jv, debugstr_w(tables) );
jv = msi_alloc_zero( sizeof *jv );
if( !jv )
return ERROR_FUNCTION_FAILED;
/* fill the structure */
jv->view.ops = &join_ops;
jv->db = db;
jv->columns = 0;
jv->rows = 0;
list_init(&jv->tables);
while (*tables)
{
if ((ptr = strchrW(tables, ' ')))
*ptr = '\0';
table = msi_alloc(sizeof(JOINTABLE));
if (!table)
{
r = ERROR_OUTOFMEMORY;
goto end;
}
r = TABLE_CreateView( db, tables, &table->view );
if( r != ERROR_SUCCESS )
{
WARN("can't create table: %s\n", debugstr_w(tables));
msi_free(table);
r = ERROR_BAD_QUERY_SYNTAX;
goto end;
}
r = table->view->ops->get_dimensions( table->view, NULL,
&table->columns );
if( r != ERROR_SUCCESS )
{
ERR("can't get table dimensions\n");
goto end;
}
jv->columns += table->columns;
list_add_head( &jv->tables, &table->entry );
if (!ptr)
break;
tables = ptr + 1;
}
*view = &jv->view;
return ERROR_SUCCESS;
end:
jv->view.ops->delete( &jv->view );
return r;
}
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