Sweden-Number/dlls/msi/join.c

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2006-07-26 09:27:15 +02:00
/*
* 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 "wine/debug.h"
#include "msi.h"
#include "msiquery.h"
#include "objbase.h"
#include "objidl.h"
#include "msipriv.h"
#include "query.h"
WINE_DEFAULT_DEBUG_CHANNEL(msidb);
typedef struct tagMSIJOINVIEW
{
MSIVIEW view;
MSIDATABASE *db;
MSIVIEW *left, *right;
UINT left_count, right_count;
UINT left_rows, right_rows;
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} MSIJOINVIEW;
static UINT JOIN_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
MSIVIEW *table;
TRACE("%p %d %d %p\n", jv, row, col, val );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>(jv->left_count + jv->right_count)) )
return ERROR_FUNCTION_FAILED;
if( row >= (jv->left_rows * jv->right_rows) )
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return ERROR_FUNCTION_FAILED;
if( col <= jv->left_count )
{
table = jv->left;
row = (row/jv->right_rows);
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}
else
{
table = jv->right;
row = (row % jv->right_rows);
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col -= jv->left_count;
}
return table->ops->fetch_int( table, row, col, val );
}
static UINT JOIN_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
MSIVIEW *table;
TRACE("%p %d %d %p\n", jv, row, col, stm );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>(jv->left_count + jv->right_count)) )
return ERROR_FUNCTION_FAILED;
if( row >= jv->left_rows * jv->right_rows )
return ERROR_FUNCTION_FAILED;
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if( row <= jv->left_count )
{
table = jv->left;
row = (row/jv->right_rows);
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}
else
{
table = jv->right;
row = (row % jv->right_rows);
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col -= jv->left_count;
}
return table->ops->fetch_stream( table, row, col, stm );
}
static UINT JOIN_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
MSIVIEW *table;
TRACE("%p %d %p\n", jv, row, rec );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
if( row >= jv->left_rows * jv->right_rows )
return ERROR_FUNCTION_FAILED;
if( row <= jv->left_count )
{
table = jv->left;
row = (row/jv->right_rows);
}
else
{
table = jv->right;
row = (row % jv->right_rows);
}
return table->ops->get_row(table, row, rec);
}
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static UINT JOIN_execute( struct tagMSIVIEW *view, MSIRECORD *record )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
UINT r, *ldata = NULL, *rdata = NULL;
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TRACE("%p %p\n", jv, record);
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
r = jv->left->ops->execute( jv->left, NULL );
if (r != ERROR_SUCCESS)
return r;
r = jv->right->ops->execute( jv->right, NULL );
if (r != ERROR_SUCCESS)
return r;
/* get the number of rows in each table */
r = jv->left->ops->get_dimensions( jv->left, &jv->left_rows, NULL );
if( r != ERROR_SUCCESS )
{
ERR("can't get left table dimensions\n");
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goto end;
}
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r = jv->right->ops->get_dimensions( jv->right, &jv->right_rows, NULL );
if( r != ERROR_SUCCESS )
{
ERR("can't get right table dimensions\n");
goto end;
}
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end:
msi_free( ldata );
msi_free( rdata );
return r;
}
static UINT JOIN_close( struct tagMSIVIEW *view )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p\n", jv );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
jv->left->ops->close( jv->left );
jv->right->ops->close( jv->right );
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->left_count + jv->right_count;
if( rows )
{
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
*rows = jv->left_rows * jv->right_rows;
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}
return ERROR_SUCCESS;
}
static UINT JOIN_get_column_info( struct tagMSIVIEW *view,
UINT n, LPWSTR *name, UINT *type )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p %d %p %p\n", jv, n, name, type );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
if( (n==0) || (n>(jv->left_count + jv->right_count)) )
return ERROR_FUNCTION_FAILED;
if( n <= jv->left_count )
return jv->left->ops->get_column_info( jv->left, n, name, type );
n = n - jv->left_count;
return jv->right->ops->get_column_info( jv->right, n, name, type );
}
static UINT JOIN_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
MSIRECORD *rec, UINT row )
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{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p %d %p\n", jv, eModifyMode, rec );
return ERROR_FUNCTION_FAILED;
}
static UINT JOIN_delete( struct tagMSIVIEW *view )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p\n", jv );
if( jv->left )
jv->left->ops->delete( jv->left );
jv->left = NULL;
if( jv->right )
jv->right->ops->delete( jv->right );
jv->right = NULL;
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msi_free( jv );
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return ERROR_SUCCESS;
}
static UINT JOIN_find_matching_rows( struct tagMSIVIEW *view, UINT col,
UINT val, UINT *row, MSIITERHANDLE *handle )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
FIXME("%p, %d, %u, %p\n", jv, col, val, *handle);
return ERROR_FUNCTION_FAILED;
}
static const MSIVIEWOPS join_ops =
{
JOIN_fetch_int,
JOIN_fetch_stream,
JOIN_get_row,
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NULL,
NULL,
NULL,
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JOIN_execute,
JOIN_close,
JOIN_get_dimensions,
JOIN_get_column_info,
JOIN_modify,
JOIN_delete,
JOIN_find_matching_rows,
NULL,
NULL,
NULL,
NULL,
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};
UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view,
LPCWSTR left, LPCWSTR right )
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{
MSIJOINVIEW *jv = NULL;
UINT r = ERROR_SUCCESS;
TRACE("%p (%s,%s)\n", jv, debugstr_w(left), debugstr_w(right) );
jv = msi_alloc_zero( sizeof *jv );
if( !jv )
return ERROR_FUNCTION_FAILED;
/* fill the structure */
jv->view.ops = &join_ops;
jv->db = db;
/* create the tables to join */
r = TABLE_CreateView( db, left, &jv->left );
if( r != ERROR_SUCCESS )
{
ERR("can't create left table\n");
goto end;
}
r = TABLE_CreateView( db, right, &jv->right );
if( r != ERROR_SUCCESS )
{
ERR("can't create right table\n");
goto end;
}
/* get the number of columns in each table */
r = jv->left->ops->get_dimensions( jv->left, NULL, &jv->left_count );
if( r != ERROR_SUCCESS )
{
ERR("can't get left table dimensions\n");
goto end;
}
r = jv->right->ops->get_dimensions( jv->right, NULL, &jv->right_count );
if( r != ERROR_SUCCESS )
{
ERR("can't get right table dimensions\n");
goto end;
}
*view = &jv->view;
return ERROR_SUCCESS;
end:
jv->view.ops->delete( &jv->view );
return r;
}