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Merge branch 'mdl26_MDL-41403_backup_reduce_memory_usage' of https://github.com/brki/moodle

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Damyon Wiese
2013-09-03 16:18:36 +08:00
parent 050167c3e6 07dffdf5f5
commit be62e59a93
1 changed files with 13 additions and 15 deletions
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backup/util/ui/restore_ui_components.php
+13 -15
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@@ -174,22 +174,20 @@ abstract class restore_search_base implements renderable {
$this->totalcount = 0;
$contextlevel = $this->get_itemcontextlevel();
list($sql, $params) = $this->get_searchsql();
$blocksz = 5000;
$offs = 0;
// Get total number, to avoid some incorrect iterations
// Get total number, to avoid some incorrect iterations.
$countsql = preg_replace('/ORDER BY.*/', '', $sql);
$totalcourses = $DB->count_records_sql("SELECT COUNT(*) FROM ($countsql) sel", $params);
// User to be checked is always the same (usually null, get it form first element)
$firstcap = reset($this->requiredcapabilities);
$userid = isset($firstcap['user']) ? $firstcap['user'] : null;
// Extract caps to check, this saves us a bunch of iterations
$requiredcaps = array();
foreach ($this->requiredcapabilities as $cap) {
$requiredcaps[] = $cap['capability'];
}
// Iterate while we have records and haven't reached $this->maxresults.
while ($totalcourses > $offs and $this->totalcount < $this->maxresults) {
$resultset = $DB->get_records_sql($sql, $params, $offs, $blocksz);
if ($totalcourses > 0) {
// User to be checked is always the same (usually null, get it from first element).
$firstcap = reset($this->requiredcapabilities);
$userid = isset($firstcap['user']) ? $firstcap['user'] : null;
// Extract caps to check, this saves us a bunch of iterations.
$requiredcaps = array();
foreach ($this->requiredcapabilities as $cap) {
$requiredcaps[] = $cap['capability'];
}
// Iterate while we have records and haven't reached $this->maxresults.
$resultset = $DB->get_recordset_sql($sql, $params);
foreach ($resultset as $result) {
context_helper::preload_from_record($result);
$classname = context_helper::get_class_for_level($contextlevel);
@@ -208,7 +206,7 @@ abstract class restore_search_base implements renderable {
$this->totalcount++;
$this->results[$result->id] = $result;
}
$offs += $blocksz;
$resultset->close();
}
return $this->totalcount;