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/*
* Implementation of the Microsoft Installer (msi.dll)
*
* Copyright 2002 Mike McCormack for CodeWeavers
* Copyright 2011 Bernhard Loos
*
* 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 <assert.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "msi.h"
#include "msiquery.h"
#include "objbase.h"
#include "objidl.h"
#include "msipriv.h"
#include "winnls.h"
#include "query.h"
WINE_DEFAULT_DEBUG_CHANNEL(msidb);
/* below is the query interface to a table */
typedef struct tagMSIROWENTRY
{
struct tagMSIWHEREVIEW *wv; /* used during sorting */
UINT values[1];
} MSIROWENTRY;
typedef struct tagJOINTABLE
{
struct tagJOINTABLE *next;
MSIVIEW *view;
UINT col_count;
UINT row_count;
UINT table_index;
} JOINTABLE;
typedef struct tagMSIORDERINFO
{
UINT col_count;
UINT error;
union ext_column columns[1];
} MSIORDERINFO;
typedef struct tagMSIWHEREVIEW
{
MSIVIEW view;
MSIDATABASE *db;
JOINTABLE *tables;
UINT row_count;
UINT col_count;
UINT table_count;
MSIROWENTRY **reorder;
UINT reorder_size; /* number of entries available in reorder */
struct expr *cond;
UINT rec_index;
MSIORDERINFO *order_info;
} MSIWHEREVIEW;
static UINT WHERE_evaluate( MSIWHEREVIEW *wv, const UINT rows[],
struct expr *cond, INT *val, MSIRECORD *record );
#define INITIAL_REORDER_SIZE 16
#define INVALID_ROW_INDEX (-1)
static void free_reorder(MSIWHEREVIEW *wv)
{
UINT i;
if (!wv->reorder)
return;
for (i = 0; i < wv->row_count; i++)
msi_free(wv->reorder[i]);
msi_free( wv->reorder );
wv->reorder = NULL;
wv->reorder_size = 0;
wv->row_count = 0;
}
static UINT init_reorder(MSIWHEREVIEW *wv)
{
MSIROWENTRY **new = msi_alloc_zero(sizeof(MSIROWENTRY *) * INITIAL_REORDER_SIZE);
if (!new)
return ERROR_OUTOFMEMORY;
free_reorder(wv);
wv->reorder = new;
wv->reorder_size = INITIAL_REORDER_SIZE;
return ERROR_SUCCESS;
}
static inline UINT find_row(MSIWHEREVIEW *wv, UINT row, UINT *(values[]))
{
if (row >= wv->row_count)
return ERROR_NO_MORE_ITEMS;
*values = wv->reorder[row]->values;
return ERROR_SUCCESS;
}
static UINT add_row(MSIWHEREVIEW *wv, UINT vals[])
{
MSIROWENTRY *new;
if (wv->reorder_size <= wv->row_count)
{
MSIROWENTRY **new_reorder;
UINT newsize = wv->reorder_size * 2;
new_reorder = msi_realloc_zero(wv->reorder, sizeof(MSIROWENTRY *) * newsize);
if (!new_reorder)
return ERROR_OUTOFMEMORY;
wv->reorder = new_reorder;
wv->reorder_size = newsize;
}
new = msi_alloc(FIELD_OFFSET( MSIROWENTRY, values[wv->table_count] ));
if (!new)
return ERROR_OUTOFMEMORY;
wv->reorder[wv->row_count++] = new;
memcpy(new->values, vals, wv->table_count * sizeof(UINT));
new->wv = wv;
return ERROR_SUCCESS;
}
static JOINTABLE *find_table(MSIWHEREVIEW *wv, UINT col, UINT *table_col)
{
JOINTABLE *table = wv->tables;
if(col == 0 || col > wv->col_count)
return NULL;
while (col > table->col_count)
{
col -= table->col_count;
table = table->next;
assert(table);
}
*table_col = col;
return table;
}
static UINT parse_column(MSIWHEREVIEW *wv, union ext_column *column,
UINT *column_type)
{
JOINTABLE *table = wv->tables;
UINT i, r;
do
{
LPCWSTR table_name;
if (column->unparsed.table)
{
r = table->view->ops->get_column_info(table->view, 1, NULL, NULL,
NULL, &table_name);
if (r != ERROR_SUCCESS)
return r;
if (strcmpW(table_name, column->unparsed.table) != 0)
continue;
}
for(i = 1; i <= table->col_count; i++)
{
LPCWSTR col_name;
r = table->view->ops->get_column_info(table->view, i, &col_name, column_type,
NULL, NULL);
if(r != ERROR_SUCCESS )
return r;
if(strcmpW(col_name, column->unparsed.column))
continue;
column->parsed.column = i;
column->parsed.table = table;
return ERROR_SUCCESS;
}
}
while ((table = table->next));
WARN("Couldn't find column %s.%s\n", debugstr_w( column->unparsed.table ), debugstr_w( column->unparsed.column ) );
return ERROR_BAD_QUERY_SYNTAX;
}
static UINT WHERE_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
JOINTABLE *table;
UINT *rows;
UINT r;
TRACE("%p %d %d %p\n", wv, row, col, val );
if( !wv->tables )
return ERROR_FUNCTION_FAILED;
r = find_row(wv, row, &rows);
if (r != ERROR_SUCCESS)
return r;
table = find_table(wv, col, &col);
if (!table)
return ERROR_FUNCTION_FAILED;
return table->view->ops->fetch_int(table->view, rows[table->table_index], col, val);
}
static UINT WHERE_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
JOINTABLE *table;
UINT *rows;
UINT r;
TRACE("%p %d %d %p\n", wv, row, col, stm );
if( !wv->tables )
return ERROR_FUNCTION_FAILED;
r = find_row(wv, row, &rows);
if (r != ERROR_SUCCESS)
return r;
table = find_table(wv, col, &col);
if (!table)
return ERROR_FUNCTION_FAILED;
return table->view->ops->fetch_stream( table->view, rows[table->table_index], col, stm );
}
static UINT WHERE_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW *)view;
TRACE("%p %d %p\n", wv, row, rec );
if (!wv->tables)
return ERROR_FUNCTION_FAILED;
return msi_view_get_row( wv->db, view, row, rec );
}
static UINT WHERE_set_row( struct tagMSIVIEW *view, UINT row, MSIRECORD *rec, UINT mask )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
UINT i, r, offset = 0;
JOINTABLE *table = wv->tables;
UINT *rows;
UINT mask_copy = mask;
TRACE("%p %d %p %08x\n", wv, row, rec, mask );
if( !wv->tables )
return ERROR_FUNCTION_FAILED;
r = find_row(wv, row, &rows);
if (r != ERROR_SUCCESS)
return r;
if (mask >= 1 << wv->col_count)
return ERROR_INVALID_PARAMETER;
do
{
for (i = 0; i < table->col_count; i++) {
UINT type;
if (!(mask_copy & (1 << i)))
continue;
r = table->view->ops->get_column_info(table->view, i + 1, NULL,
&type, NULL, NULL );
if (r != ERROR_SUCCESS)
return r;
if (type & MSITYPE_KEY)
return ERROR_FUNCTION_FAILED;
}
mask_copy >>= table->col_count;
}
while (mask_copy && (table = table->next));
table = wv->tables;
do
{
const UINT col_count = table->col_count;
UINT i;
MSIRECORD *reduced;
UINT reduced_mask = (mask >> offset) & ((1 << col_count) - 1);
if (!reduced_mask)
{
offset += col_count;
continue;
}
reduced = MSI_CreateRecord(col_count);
if (!reduced)
return ERROR_FUNCTION_FAILED;
for (i = 1; i <= col_count; i++)
{
r = MSI_RecordCopyField(rec, i + offset, reduced, i);
if (r != ERROR_SUCCESS)
break;
}
offset += col_count;
if (r == ERROR_SUCCESS)
r = table->view->ops->set_row(table->view, rows[table->table_index], reduced, reduced_mask);
msiobj_release(&reduced->hdr);
}
while ((table = table->next));
return r;
}
static UINT WHERE_delete_row(struct tagMSIVIEW *view, UINT row)
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW *)view;
UINT r;
UINT *rows;
TRACE("(%p %d)\n", view, row);
if (!wv->tables)
return ERROR_FUNCTION_FAILED;
r = find_row(wv, row, &rows);
if ( r != ERROR_SUCCESS )
return r;
if (wv->table_count > 1)
return ERROR_CALL_NOT_IMPLEMENTED;
return wv->tables->view->ops->delete_row(wv->tables->view, rows[0]);
}
static INT INT_evaluate_binary( MSIWHEREVIEW *wv, const UINT rows[],
const struct complex_expr *expr, INT *val, MSIRECORD *record )
{
UINT rl, rr;
INT lval, rval;
rl = WHERE_evaluate(wv, rows, expr->left, &lval, record);
if (rl != ERROR_SUCCESS && rl != ERROR_CONTINUE)
return rl;
rr = WHERE_evaluate(wv, rows, expr->right, &rval, record);
if (rr != ERROR_SUCCESS && rr != ERROR_CONTINUE)
return rr;
if (rl == ERROR_CONTINUE || rr == ERROR_CONTINUE)
{
if (rl == rr)
{
*val = TRUE;
return ERROR_CONTINUE;
}
if (expr->op == OP_AND)
{
if ((rl == ERROR_CONTINUE && !rval) || (rr == ERROR_CONTINUE && !lval))
{
*val = FALSE;
return ERROR_SUCCESS;
}
}
else if (expr->op == OP_OR)
{
if ((rl == ERROR_CONTINUE && rval) || (rr == ERROR_CONTINUE && lval))
{
*val = TRUE;
return ERROR_SUCCESS;
}
}
*val = TRUE;
return ERROR_CONTINUE;
}
switch( expr->op )
{
case OP_EQ:
*val = ( lval == rval );
break;
case OP_AND:
*val = ( lval && rval );
break;
case OP_OR:
*val = ( lval || rval );
break;
case OP_GT:
*val = ( lval > rval );
break;
case OP_LT:
*val = ( lval < rval );
break;
case OP_LE:
*val = ( lval <= rval );
break;
case OP_GE:
*val = ( lval >= rval );
break;
case OP_NE:
*val = ( lval != rval );
break;
default:
ERR("Unknown operator %d\n", expr->op );
return ERROR_FUNCTION_FAILED;
}
return ERROR_SUCCESS;
}
static inline UINT expr_fetch_value(const union ext_column *expr, const UINT rows[], UINT *val)
{
JOINTABLE *table = expr->parsed.table;
if( rows[table->table_index] == INVALID_ROW_INDEX )
{
*val = 1;
return ERROR_CONTINUE;
}
return table->view->ops->fetch_int(table->view, rows[table->table_index],
expr->parsed.column, val);
}
static UINT INT_evaluate_unary( MSIWHEREVIEW *wv, const UINT rows[],
const struct complex_expr *expr, INT *val, MSIRECORD *record )
{
UINT r;
UINT lval;
r = expr_fetch_value(&expr->left->u.column, rows, &lval);
if(r != ERROR_SUCCESS)
return r;
switch( expr->op )
{
case OP_ISNULL:
*val = !lval;
break;
case OP_NOTNULL:
*val = lval;
break;
default:
ERR("Unknown operator %d\n", expr->op );
return ERROR_FUNCTION_FAILED;
}
return ERROR_SUCCESS;
}
static UINT STRING_evaluate( MSIWHEREVIEW *wv, const UINT rows[],
const struct expr *expr,
const MSIRECORD *record,
const WCHAR **str )
{
UINT val = 0, r = ERROR_SUCCESS;
switch( expr->type )
{
case EXPR_COL_NUMBER_STRING:
r = expr_fetch_value(&expr->u.column, rows, &val);
if (r == ERROR_SUCCESS)
*str = msi_string_lookup_id(wv->db->strings, val);
else
*str = NULL;
break;
case EXPR_SVAL:
*str = expr->u.sval;
break;
case EXPR_WILDCARD:
*str = MSI_RecordGetString(record, ++wv->rec_index);
break;
default:
ERR("Invalid expression type\n");
r = ERROR_FUNCTION_FAILED;
*str = NULL;
break;
}
return r;
}
static UINT STRCMP_Evaluate( MSIWHEREVIEW *wv, const UINT rows[], const struct complex_expr *expr,
INT *val, const MSIRECORD *record )
{
int sr;
const WCHAR *l_str, *r_str;
UINT r;
*val = TRUE;
r = STRING_evaluate(wv, rows, expr->left, record, &l_str);
if (r == ERROR_CONTINUE)
return r;
r = STRING_evaluate(wv, rows, expr->right, record, &r_str);
if (r == ERROR_CONTINUE)
return r;
if( l_str == r_str ||
((!l_str || !*l_str) && (!r_str || !*r_str)) )
sr = 0;
else if( l_str && ! r_str )
sr = 1;
else if( r_str && ! l_str )
sr = -1;
else
sr = strcmpW( l_str, r_str );
*val = ( expr->op == OP_EQ && ( sr == 0 ) ) ||
( expr->op == OP_NE && ( sr != 0 ) );
return ERROR_SUCCESS;
}
static UINT WHERE_evaluate( MSIWHEREVIEW *wv, const UINT rows[],
struct expr *cond, INT *val, MSIRECORD *record )
{
UINT r, tval;
if( !cond )
{
*val = TRUE;
return ERROR_SUCCESS;
}
switch( cond->type )
{
case EXPR_COL_NUMBER:
r = expr_fetch_value(&cond->u.column, rows, &tval);
if( r != ERROR_SUCCESS )
return r;
*val = tval - 0x8000;
return ERROR_SUCCESS;
case EXPR_COL_NUMBER32:
r = expr_fetch_value(&cond->u.column, rows, &tval);
if( r != ERROR_SUCCESS )
return r;
*val = tval - 0x80000000;
return r;
case EXPR_UVAL:
*val = cond->u.uval;
return ERROR_SUCCESS;
case EXPR_COMPLEX:
return INT_evaluate_binary(wv, rows, &cond->u.expr, val, record);
case EXPR_UNARY:
return INT_evaluate_unary( wv, rows, &cond->u.expr, val, record );
case EXPR_STRCMP:
return STRCMP_Evaluate( wv, rows, &cond->u.expr, val, record );
case EXPR_WILDCARD:
*val = MSI_RecordGetInteger( record, ++wv->rec_index );
return ERROR_SUCCESS;
default:
ERR("Invalid expression type\n");
break;
}
return ERROR_SUCCESS;
}
static UINT check_condition( MSIWHEREVIEW *wv, MSIRECORD *record, JOINTABLE **tables,
UINT table_rows[] )
{
UINT r = ERROR_FUNCTION_FAILED;
INT val;
for (table_rows[(*tables)->table_index] = 0;
table_rows[(*tables)->table_index] < (*tables)->row_count;
table_rows[(*tables)->table_index]++)
{
val = 0;
wv->rec_index = 0;
r = WHERE_evaluate( wv, table_rows, wv->cond, &val, record );
if (r != ERROR_SUCCESS && r != ERROR_CONTINUE)
break;
if (val)
{
if (*(tables + 1))
{
r = check_condition(wv, record, tables + 1, table_rows);
if (r != ERROR_SUCCESS)
break;
}
else
{
if (r != ERROR_SUCCESS)
break;
add_row (wv, table_rows);
}
}
}
table_rows[(*tables)->table_index] = INVALID_ROW_INDEX;
return r;
}
static int compare_entry( const void *left, const void *right )
{
const MSIROWENTRY *le = *(const MSIROWENTRY**)left;
const MSIROWENTRY *re = *(const MSIROWENTRY**)right;
const MSIWHEREVIEW *wv = le->wv;
MSIORDERINFO *order = wv->order_info;
UINT i, j, r, l_val, r_val;
assert(le->wv == re->wv);
if (order)
{
for (i = 0; i < order->col_count; i++)
{
const union ext_column *column = &order->columns[i];
r = column->parsed.table->view->ops->fetch_int(column->parsed.table->view,
le->values[column->parsed.table->table_index],
column->parsed.column, &l_val);
if (r != ERROR_SUCCESS)
{
order->error = r;
return 0;
}
r = column->parsed.table->view->ops->fetch_int(column->parsed.table->view,
re->values[column->parsed.table->table_index],
column->parsed.column, &r_val);
if (r != ERROR_SUCCESS)
{
order->error = r;
return 0;
}
if (l_val != r_val)
return l_val < r_val ? -1 : 1;
}
}
for (j = 0; j < wv->table_count; j++)
{
if (le->values[j] != re->values[j])
return le->values[j] < re->values[j] ? -1 : 1;
}
return 0;
}
static void add_to_array( JOINTABLE **array, JOINTABLE *elem )
{
while (*array && *array != elem)
array++;
if (!*array)
*array = elem;
}
static BOOL in_array( JOINTABLE **array, JOINTABLE *elem )
{
while (*array && *array != elem)
array++;
return *array != NULL;
}
#define CONST_EXPR 1 /* comparison to a constant value */
#define JOIN_TO_CONST_EXPR 0x10000 /* comparison to a table involved with
a CONST_EXPR comaprison */
static UINT reorder_check( const struct expr *expr, JOINTABLE **ordered_tables,
BOOL process_joins, JOINTABLE **lastused )
{
UINT res = 0;
switch (expr->type)
{
case EXPR_WILDCARD:
case EXPR_SVAL:
case EXPR_UVAL:
return 0;
case EXPR_COL_NUMBER:
case EXPR_COL_NUMBER32:
case EXPR_COL_NUMBER_STRING:
if (in_array(ordered_tables, expr->u.column.parsed.table))
return JOIN_TO_CONST_EXPR;
*lastused = expr->u.column.parsed.table;
return CONST_EXPR;
case EXPR_STRCMP:
case EXPR_COMPLEX:
res = reorder_check(expr->u.expr.right, ordered_tables, process_joins, lastused);
/* fall through */
case EXPR_UNARY:
res += reorder_check(expr->u.expr.left, ordered_tables, process_joins, lastused);
if (res == 0)
return 0;
if (res == CONST_EXPR)
add_to_array(ordered_tables, *lastused);
if (process_joins && res == JOIN_TO_CONST_EXPR + CONST_EXPR)
add_to_array(ordered_tables, *lastused);
return res;
default:
ERR("Unkown expr type: %i\n", expr->type);
assert(0);
return 0x1000000;
}
}
/* reorders the tablelist in a way to evaluate the condition as fast as possible */
static JOINTABLE **ordertables( MSIWHEREVIEW *wv )
{
JOINTABLE *table;
JOINTABLE **tables;
tables = msi_alloc_zero( (wv->table_count + 1) * sizeof(*tables) );
if (wv->cond)
{
table = NULL;
reorder_check(wv->cond, tables, FALSE, &table);
table = NULL;
reorder_check(wv->cond, tables, TRUE, &table);
}
table = wv->tables;
while (table)
{
add_to_array(tables, table);
table = table->next;
}
return tables;
}
static UINT WHERE_execute( struct tagMSIVIEW *view, MSIRECORD *record )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
UINT r;
JOINTABLE *table = wv->tables;
UINT *rows;
JOINTABLE **ordered_tables;
int i = 0;
TRACE("%p %p\n", wv, record);
if( !table )
return ERROR_FUNCTION_FAILED;
r = init_reorder(wv);
if (r != ERROR_SUCCESS)
return r;
do
{
table->view->ops->execute(table->view, NULL);
r = table->view->ops->get_dimensions(table->view, &table->row_count, NULL);
if (r != ERROR_SUCCESS)
{
ERR("failed to get table dimensions\n");
return r;
}
/* each table must have at least one row */
if (table->row_count == 0)
return ERROR_SUCCESS;
}
while ((table = table->next));
ordered_tables = ordertables( wv );
rows = msi_alloc( wv->table_count * sizeof(*rows) );
for (i = 0; i < wv->table_count; i++)
rows[i] = INVALID_ROW_INDEX;
r = check_condition(wv, record, ordered_tables, rows);
if (wv->order_info)
wv->order_info->error = ERROR_SUCCESS;
qsort(wv->reorder, wv->row_count, sizeof(MSIROWENTRY *), compare_entry);
if (wv->order_info)
r = wv->order_info->error;
msi_free( rows );
msi_free( ordered_tables );
return r;
}
static UINT WHERE_close( struct tagMSIVIEW *view )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
JOINTABLE *table = wv->tables;
TRACE("%p\n", wv );
if (!table)
return ERROR_FUNCTION_FAILED;
do
table->view->ops->close(table->view);
while ((table = table->next));
return ERROR_SUCCESS;
}
static UINT WHERE_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
TRACE("%p %p %p\n", wv, rows, cols );
if(!wv->tables)
return ERROR_FUNCTION_FAILED;
if (rows)
{
if (!wv->reorder)
return ERROR_FUNCTION_FAILED;
*rows = wv->row_count;
}
if (cols)
*cols = wv->col_count;
return ERROR_SUCCESS;
}
static UINT WHERE_get_column_info( struct tagMSIVIEW *view, UINT n, LPCWSTR *name,
UINT *type, BOOL *temporary, LPCWSTR *table_name )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
JOINTABLE *table;
TRACE("%p %d %p %p %p %p\n", wv, n, name, type, temporary, table_name );
if(!wv->tables)
return ERROR_FUNCTION_FAILED;
table = find_table(wv, n, &n);
if (!table)
return ERROR_FUNCTION_FAILED;
return table->view->ops->get_column_info(table->view, n, name,
type, temporary, table_name);
}
static UINT join_find_row( MSIWHEREVIEW *wv, MSIRECORD *rec, UINT *row )
{
LPCWSTR str;
UINT r, i, id, data;
str = MSI_RecordGetString( rec, 1 );
r = msi_string2idW( wv->db->strings, str, &id );
if (r != ERROR_SUCCESS)
return r;
for (i = 0; i < wv->row_count; i++)
{
WHERE_fetch_int( &wv->view, i, 1, &data );
if (data == id)
{
*row = i;
return ERROR_SUCCESS;
}
}
return ERROR_FUNCTION_FAILED;
}
static UINT join_modify_update( struct tagMSIVIEW *view, MSIRECORD *rec )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW *)view;
UINT r, row, i, mask = 0;
MSIRECORD *current;
r = join_find_row( wv, rec, &row );
if (r != ERROR_SUCCESS)
return r;
r = msi_view_get_row( wv->db, view, row, &current );
if (r != ERROR_SUCCESS)
return r;
assert(MSI_RecordGetFieldCount(rec) == MSI_RecordGetFieldCount(current));
for (i = MSI_RecordGetFieldCount(rec); i > 0; i--)
{
if (!MSI_RecordsAreFieldsEqual(rec, current, i))
mask |= 1 << (i - 1);
}
msiobj_release(&current->hdr);
return WHERE_set_row( view, row, rec, mask );
}
static UINT WHERE_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
MSIRECORD *rec, UINT row )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
JOINTABLE *table = wv->tables;
UINT r;
TRACE("%p %d %p\n", wv, eModifyMode, rec);
if (!table)
return ERROR_FUNCTION_FAILED;
if (!table->next)
{
UINT *rows;
if (find_row(wv, row - 1, &rows) == ERROR_SUCCESS)
row = rows[0] + 1;
else
row = -1;
return table->view->ops->modify(table->view, eModifyMode, rec, row);
}
switch (eModifyMode)
{
case MSIMODIFY_UPDATE:
return join_modify_update( view, rec );
case MSIMODIFY_ASSIGN:
case MSIMODIFY_DELETE:
case MSIMODIFY_INSERT:
case MSIMODIFY_INSERT_TEMPORARY:
case MSIMODIFY_MERGE:
case MSIMODIFY_REPLACE:
case MSIMODIFY_SEEK:
case MSIMODIFY_VALIDATE:
case MSIMODIFY_VALIDATE_DELETE:
case MSIMODIFY_VALIDATE_FIELD:
case MSIMODIFY_VALIDATE_NEW:
r = ERROR_FUNCTION_FAILED;
break;
case MSIMODIFY_REFRESH:
r = ERROR_CALL_NOT_IMPLEMENTED;
break;
default:
WARN("%p %d %p %u - unknown mode\n", view, eModifyMode, rec, row );
r = ERROR_INVALID_PARAMETER;
break;
}
return r;
}
static UINT WHERE_delete( struct tagMSIVIEW *view )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
JOINTABLE *table = wv->tables;
TRACE("%p\n", wv );
while(table)
{
JOINTABLE *next;
table->view->ops->delete(table->view);
table->view = NULL;
next = table->next;
msi_free(table);
table = next;
}
wv->tables = NULL;
wv->table_count = 0;
free_reorder(wv);
msi_free(wv->order_info);
wv->order_info = NULL;
msiobj_release( &wv->db->hdr );
msi_free( wv );
return ERROR_SUCCESS;
}
static UINT WHERE_find_matching_rows( struct tagMSIVIEW *view, UINT col,
UINT val, UINT *row, MSIITERHANDLE *handle )
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW*)view;
UINT i, row_value;
TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
if (!wv->tables)
return ERROR_FUNCTION_FAILED;
if (col == 0 || col > wv->col_count)
return ERROR_INVALID_PARAMETER;
for (i = PtrToUlong(*handle); i < wv->row_count; i++)
{
if (view->ops->fetch_int( view, i, col, &row_value ) != ERROR_SUCCESS)
continue;
if (row_value == val)
{
*row = i;
*handle = UlongToPtr(i + 1);
return ERROR_SUCCESS;
}
}
return ERROR_NO_MORE_ITEMS;
}
static UINT WHERE_sort(struct tagMSIVIEW *view, column_info *columns)
{
MSIWHEREVIEW *wv = (MSIWHEREVIEW *)view;
JOINTABLE *table = wv->tables;
column_info *column = columns;
MSIORDERINFO *orderinfo;
UINT r, count = 0;
int i;
TRACE("%p %p\n", view, columns);
if (!table)
return ERROR_FUNCTION_FAILED;
while (column)
{
count++;
column = column->next;
}
if (count == 0)
return ERROR_SUCCESS;
orderinfo = msi_alloc(sizeof(MSIORDERINFO) + (count - 1) * sizeof(union ext_column));
if (!orderinfo)
return ERROR_OUTOFMEMORY;
orderinfo->col_count = count;
column = columns;
for (i = 0; i < count; i++)
{
orderinfo->columns[i].unparsed.column = column->column;
orderinfo->columns[i].unparsed.table = column->table;
r = parse_column(wv, &orderinfo->columns[i], NULL);
if (r != ERROR_SUCCESS)
goto error;
}
wv->order_info = orderinfo;
return ERROR_SUCCESS;
error:
msi_free(orderinfo);
return r;
}
static const MSIVIEWOPS where_ops =
{
WHERE_fetch_int,
WHERE_fetch_stream,
WHERE_get_row,
WHERE_set_row,
NULL,
WHERE_delete_row,
WHERE_execute,
WHERE_close,
WHERE_get_dimensions,
WHERE_get_column_info,
WHERE_modify,
WHERE_delete,
WHERE_find_matching_rows,
NULL,
NULL,
NULL,
NULL,
WHERE_sort,
NULL,
};
static UINT WHERE_VerifyCondition( MSIWHEREVIEW *wv, struct expr *cond,
UINT *valid )
{
UINT r;
switch( cond->type )
{
case EXPR_COLUMN:
{
UINT type;
*valid = FALSE;
r = parse_column(wv, &cond->u.column, &type);
if (r != ERROR_SUCCESS)
break;
if (type&MSITYPE_STRING)
cond->type = EXPR_COL_NUMBER_STRING;
else if ((type&0xff) == 4)
cond->type = EXPR_COL_NUMBER32;
else
cond->type = EXPR_COL_NUMBER;
*valid = TRUE;
break;
}
case EXPR_COMPLEX:
r = WHERE_VerifyCondition( wv, cond->u.expr.left, valid );
if( r != ERROR_SUCCESS )
return r;
if( !*valid )
return ERROR_SUCCESS;
r = WHERE_VerifyCondition( wv, cond->u.expr.right, valid );
if( r != ERROR_SUCCESS )
return r;
/* check the type of the comparison */
if( ( cond->u.expr.left->type == EXPR_SVAL ) ||
( cond->u.expr.left->type == EXPR_COL_NUMBER_STRING ) ||
( cond->u.expr.right->type == EXPR_SVAL ) ||
( cond->u.expr.right->type == EXPR_COL_NUMBER_STRING ) )
{
switch( cond->u.expr.op )
{
case OP_EQ:
case OP_NE:
break;
default:
*valid = FALSE;
return ERROR_INVALID_PARAMETER;
}
/* FIXME: check we're comparing a string to a column */
cond->type = EXPR_STRCMP;
}
break;
case EXPR_UNARY:
if ( cond->u.expr.left->type != EXPR_COLUMN )
{
*valid = FALSE;
return ERROR_INVALID_PARAMETER;
}
r = WHERE_VerifyCondition( wv, cond->u.expr.left, valid );
if( r != ERROR_SUCCESS )
return r;
break;
case EXPR_IVAL:
*valid = 1;
cond->type = EXPR_UVAL;
cond->u.uval = cond->u.ival;
break;
case EXPR_WILDCARD:
*valid = 1;
break;
case EXPR_SVAL:
*valid = 1;
break;
default:
ERR("Invalid expression type\n");
*valid = 0;
break;
}
return ERROR_SUCCESS;
}
UINT WHERE_CreateView( MSIDATABASE *db, MSIVIEW **view, LPWSTR tables,
struct expr *cond )
{
MSIWHEREVIEW *wv = NULL;
UINT r, valid = 0;
WCHAR *ptr;
TRACE("(%s)\n", debugstr_w(tables) );
wv = msi_alloc_zero( sizeof *wv );
if( !wv )
return ERROR_FUNCTION_FAILED;
/* fill the structure */
wv->view.ops = &where_ops;
msiobj_addref( &db->hdr );
wv->db = db;
wv->cond = cond;
while (*tables)
{
JOINTABLE *table;
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->col_count);
if (r != ERROR_SUCCESS)
{
ERR("can't get table dimensions\n");
goto end;
}
wv->col_count += table->col_count;
table->table_index = wv->table_count++;
table->next = wv->tables;
wv->tables = table;
if (!ptr)
break;
tables = ptr + 1;
}
if( cond )
{
r = WHERE_VerifyCondition( wv, cond, &valid );
if( r != ERROR_SUCCESS )
goto end;
if( !valid ) {
r = ERROR_FUNCTION_FAILED;
goto end;
}
}
*view = (MSIVIEW*) wv;
return ERROR_SUCCESS;
end:
WHERE_delete(&wv->view);
return r;
}
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