class FabricTopicAdmin implements IEventTopic {

    @Override
    public ListPage<TbNode> queryNodeList(QueryEntity queryEntity) throws BrokerException {
        validateChannelName(queryEntity.getGroupId());

        return fabricDelegate.getFabricMap().get(queryEntity.getGroupId())
                .queryNodeList(queryEntity.getPageNumber(), queryEntity.getPageSize());
    }

    public  FabricTopicAdmin(FabricDelegate fabricDelegate);

}