public static function get_instance($type = 'function')
{
if (self::$instances == null) {
self::$instances = array();
}
if (empty(self::$instances[$type])) {
self::$instances[$type] = new SilkCache($type);
}
return self::$instances[$type];
}
/**
* Generates an array of column names in the table that perists this class. This
* list is then cached during the life of the request.
*
* @return array An array of column names
*/
function get_columns_in_table()
{
return SilkCache::get_instance()->call(array(&$this, '_get_columns_in_table'), $this->get_table());
}
/**
* Sets the given site perference with the given value.
*
* @since 0.6
*/
public static function set_preference($prefname, $value)
{
$doinsert = true;
$db = db();
$query = "SELECT sitepref_value from " . db_prefix() . "siteprefs WHERE sitepref_name = " . $db->qstr($prefname);
$result = $db->Execute($query);
if ($result && $result->RecordCount() > 0) {
$doinsert = false;
}
if ($result) {
$result->Close();
}
if ($doinsert) {
$query = "INSERT INTO " . db_prefix() . "siteprefs (sitepref_name, sitepref_value) VALUES (" . $db->qstr($prefname) . ", " . $db->qstr($value) . ")";
$db->Execute($query);
} else {
$query = "UPDATE " . db_prefix() . "siteprefs SET sitepref_value = " . $db->qstr($value) . " WHERE sitepref_name = " . $db->qstr($prefname);
$db->Execute($query);
}
self::$siteprefs[$prefname] = $value;
SilkCache::clear();
}