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sort dbms as priority

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git-svn-id: http://xe-core.googlecode.com/svn/branches/maserati@12129 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
flyskyko 2012-11-06 01:29:27 +00:00
parent fc891a8fe1
commit 7a7ee712b6
1 changed files with 47 additions and 1 deletions
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48
classes/db/DB.class.php
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@ -45,6 +45,18 @@
*/
class DB {
/**
* priority of DBMS
* @var array
*/
var $priority_dbms = array(
'mysqli' => 5,
'mysql' => 4,
'mysql_innodb' => 3,
'cubrid' => 2,
'mssql' => 1
);
/**
* count cache path
* @var string
@ -250,7 +262,6 @@
$db_classes_path = _XE_PATH_."classes/db/";
$filter = "/^DB([^\.]+)\.class\.php/i";
$supported_list = FileHandler::readDir($db_classes_path, $filter, true);
sort($supported_list);
// after creating instance of class, check is supported
for($i = 0; $i < count($supported_list); $i++) {
@ -275,10 +286,45 @@
$get_supported_list[] = $obj;
}
// sort
@usort($get_supported_list, array($this, '_sortDBMS'));
$this->supported_list = $get_supported_list;
return $this->supported_list;
}
/**
* sort dbms as priority
*/
function _sortDBMS($a, $b)
{
if(!isset($this->priority_dbms[$a->db_type]))
{
$priority_a = 0;
}
else
{
$priority_a = $this->priority_dbms[$a->db_type];
}
if(!isset($this->priority_dbms[$b->db_type]))
{
$priority_b = 0;
}
else
{
$priority_b = $this->priority_dbms[$b->db_type];
}
if($priority_a == $priority_b)
{
return 0;
}
return ($priority_a > $priority_b) ? -1 : 1;
}
/**
* Return dbms supportable status
* The value is set in the child class