<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Library for extracting information about the partitions
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}

/**
* base Partition Class
*
* @package PhpMyAdmin
*/
class PMA_Partition
{
/**
* returns array of partition names for a specific db/table
*
* @param string $db database name
* @param string $table table name
*
* @access public
* @return array of partition names
*/
static public function getPartitionNames($db, $table)
{
if (PMA_Partition::havePartitioning()) {
return PMA_DBI_fetch_result(
"SELECT `PARTITION_NAME` FROM `information_schema`.`PARTITIONS`"
. " WHERE `TABLE_SCHEMA` = '" . $db
. "' AND `TABLE_NAME` = '" . $table . "'"
);
} else {
return array();
}
}

/**
* checks if MySQL server supports partitioning
*
* @static
* @staticvar boolean $have_partitioning
* @staticvar boolean $already_checked
* @access public
* @return boolean
*/
static public function havePartitioning()
{
static $have_partitioning = false;
static $already_checked = false;

if (! $already_checked) {
if (PMA_MYSQL_INT_VERSION >= 50100) {
if (PMA_MYSQL_INT_VERSION < 50600) {
if (PMA_DBI_fetch_value(
"SHOW VARIABLES LIKE 'have_partitioning';"
)) {
$have_partitioning = true;
}
} else {
// see http://dev.mysql.com/doc/refman/5.6/en/partitioning.html
$plugins = PMA_DBI_fetch_result("SHOW PLUGINS");
foreach ($plugins as $value) {
if ($value['Name'] == 'partition') {
$have_partitioning = true;
break;
}
}
}
$already_checked = true;
}
}
return $have_partitioning;
}
}
?>