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Fix performance issue with many databases (when only_db is defined)

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Martyn Dale 2013-11-21 13:00:43 -05:00 committed by Marc Delisle
parent 5945c9d4b9
commit 30d9af4789
1 changed files with 23 additions and 6 deletions
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29
libraries/navigation/Nodes/Node.class.php
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@ -359,12 +359,29 @@ class Node
*/
public function getData($type, $pos, $searchClause = '')
{
$query = "SELECT `SCHEMA_NAME` ";
$query .= "FROM `INFORMATION_SCHEMA`.`SCHEMATA` ";
$query .= $this->_getWhereClause($searchClause);
$query .= "ORDER BY `SCHEMA_NAME` ASC ";
$query .= "LIMIT $pos, {$GLOBALS['cfg']['MaxNavigationItems']}";
return $GLOBALS['dbi']->fetchResult($query);
if ($type == 'databases'
&& ! empty($GLOBALS['cfg']['Server']['only_db'])
) {
$db_list = $GLOBALS['cfg']['Server']['only_db'];
$query = "SELECT * FROM ( SELECT '";
if (is_string($db_list)) {
$db_list = array($db_list);
}
if (count($db_list)) {
$query .= implode("' UNION ALL SELECT '", $db_list);
$query .= "' ";
}
return $GLOBALS['dbi']->fetchResult($query . ") as alias");
} else {
$query = "SELECT `SCHEMA_NAME` ";
$query .= "FROM `INFORMATION_SCHEMA`.`SCHEMATA` ";
$query .= $this->_getWhereClause($searchClause);
$query .= "ORDER BY `SCHEMA_NAME` ASC ";
$query .= "LIMIT $pos, {$GLOBALS['cfg']['MaxNavigationItems']}";
return $GLOBALS['dbi']->fetchResult($query);
}
}
/**