61:            if ($this->data === NULL) {
62:                $this->data = array();
63:                foreach ($this->selection as $row) {
64:                    if ($this->refTable !== NULL) {
65:                        $row = $this->refColumn !== NULL
66:                            ? $row->ref($this->refTable, $this->refColumn)
67:                            : $row->{$this->refTable};
68:                    }
69:
70:                    $class = $this->entity;
71:                    $entity = new $class($row);
72:                    $primary = $row->getPrimary(FALSE);
73:
74:                    if ($primary !== NULL && is_scalar($primary)) {
75:                        $this->data[$primary] = $entity;