Template::safeDelete

private function safeDelete()
{
	$connection = Application::getConnection();
	$connection->queryExecute('UPDATE b_tasks_template SET ZOMBIE = 'Y' WHERE ID = ' . $this->templateId);

	$this->removeAgents();

	$parent = DependenceTable::getParentId($this->templateId)->fetch();
	$parentId = $parent['PARENT_TEMPLATE_ID'];
	$subTree = DependenceTable::getSubTree($this->templateId, [], ['INCLUDE_SELF' => false])->fetchAll();

	// delete link to parent
	DependenceTable::unlink($this->templateId);

	// reattach sub templates
	if ($parentId)
	{
		foreach ($subTree as $element)
		{
			if ($element['DIRECT'] == 1)
			{
				DependenceTable::moveLink($element['TEMPLATE_ID'], $parentId);
			}
		}
	}
	else
	{
		foreach ($subTree as $element)
		{
			if ($element['DIRECT'] == 1)
			{
				DependenceTable::unlink($element['TEMPLATE_ID']);
			}
		}
	}

	// delete item itself
	$select = ['TEMPLATE_ID', 'PARENT_TEMPLATE_ID'];
	$filter = [
		'=TEMPLATE_ID' => $this->templateId,
		'=PARENT_TEMPLATE_ID' => $this->templateId
	];

	$item = DependenceTable::getList(['select' => $select, 'filter' => $filter])->fetch();
	DependenceTable::delete($item);
}