public static function singleton($o, $id = NULL, $class = NULL)
{
if (!is_object($o) || !$o instanceof Model) {
throw new Exception("trying to get singleton of non-Model instance");
}
if (!self::$active) {
return $o;
}
if (!isset($class)) {
$class = get_class($o);
}
if (!isset($id)) {
$PK = eval('$x = ' . $class . '::$__table__; return $x->pk;');
$id = $o->{$PK};
}
if ($x = _object_cache::get($class, $id)) {
return $x;
} else {
_object_cache::store($class, $id, $o);
return $o;
}
}
public function _refresh()
{
$pk = $this->_t->pk;
$id = $this->{$pk};
_object_cache::forget(get_class($this), $id);
$this->__virtmembers = array();
$this->__members = array();
$x = $this->_t->find_first($id);
# this will give us a freshly created duplicate
foreach ($this->_t->columns as $f => $c) {
# copy all the fields from the dup to this
$this->{$f} = $x->{$f};
}
_object_cache::forget(get_class($this), $id);
# forget the singleton dup
_object_cache::store(get_class($this), $id, $this);
# store this
}
