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NEW Can use the result_mode of mysqli driver. Save memory for list count

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This commit is contained in:
Laurent Destailleur 2021-08-16 22:36:30 +02:00
parent a5df1d28d7
commit 23083427e8
2 changed files with 509 additions and 511 deletions
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978
htdocs/comm/action/list.php
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File diff suppressed because it is too large Load Diff

42
htdocs/modulebuilder/template/myobject_list.php
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@ -344,43 +344,45 @@ $sql .= $hookmanager->resPrint;
$sql = preg_replace('/,\s*$/', '', $sql);
*/
$sql .= $db->order($sortfield, $sortorder);
// Count total nb of records
$nbtotalofrecords = '';
if (empty($conf->global->MAIN_DISABLE_FULL_SCANLIST)) {
/* This old method to get and count full list returns all record so use a high amount of memory.
/* This old and fast method to get and count full list returns all record so use a high amount of memory.
$resql = $db->query($sql);
$nbtotalofrecords = $db->num_rows($resql);
*/
/* The new method does not consume memory on mysql (not tested on pgsql) */
$resql = $db->query($sql, 0, 'auto', 1);
/* The slow method does not consume memory on mysql (not tested on pgsql) */
/*$resql = $db->query($sql, 0, 'auto', 1);
while ($db->fetch_object($resql)) {
$nbtotalofrecords++;
}
}*/
/* This fast and low memory method to get and count full list convert the sql into a sql count */
$sqlforcount = preg_replace('/^SELECT[a-z0-9\._\s\(\),]+FROM/i', 'SELECT COUNT(*) as nbtotalofrecords FROM', $sql);
$resql = $db->query($sqlforcount);
$objforcount = $db->fetch_object($resql);
$nbtotalofrecords = $objforcount->nbtotalofrecords;
if (($page * $limit) > $nbtotalofrecords) { // if total of record found is smaller than page * limit, goto and load page 0
$page = 0;
$offset = 0;
}
$db->free($resql);
}
// if total of record found is smaller than limit, no need to do paging and to restart another select with limits set.
if (is_numeric($nbtotalofrecords) && ($limit > $nbtotalofrecords || empty($limit))) {
$num = $nbtotalofrecords;
} else {
if ($limit) {
$sql .= $db->plimit($limit + 1, $offset);
}
$resql = $db->query($sql);
if (!$resql) {
dol_print_error($db);
exit;
}
$num = $db->num_rows($resql);
// Complete request and execute it with limit
$sql .= $db->order($sortfield, $sortorder);
if ($limit) {
$sql .= $db->plimit($limit + 1, $offset);
}
$resql = $db->query($sql);
if (!$resql) {
dol_print_error($db);
exit;
}
$num = $db->num_rows($resql);
// Direct jump if only one record found
if ($num == 1 && !empty($conf->global->MAIN_SEARCH_DIRECT_OPEN_IF_ONLY_ONE) && $search_all && !$page) {
$obj = $db->fetch_object($resql);