def on_data_available(self, reader): info = fastdds.SampleInfo() data = TestDemo.TestDemo() reader.take_next_sample(data, info) print("Received {message} : {index}".format(message=data.message(), index=data.index())) def on_subscription_matched(self, datareader, info): if (0 < i...
第二个重写回调是on_data_available()。在这种情况下,获取并处理数据读取器可以访问的下一个接收样本以显示其内容。这里定义了SampleInfo类的对象,该对象确定是否已经读取或获取了样本。每次读取样本时,接收的样本计数器都会增加。 void on_data_available( DataReader* reader) override { SampleInfo info; if (re...
如果应用程序希望改用on_data_available(),则应禁用Statusask的相应位。 重要: 在创建实体时使用StatusMask::none()仅禁用DDS标准回调: on_sample_rejected() on_liveliness_changed() on_requested_deadline_missed() on_requested_incompatible_qos() on_data_available() on_subscription_matched() on_sample_l...
void on_data_available(eprosima::fastdds::dds::DataReader* reader) override //处理接收到的数据 YourDataType data; reader->take_next_sample(&data); //... } }; // 创建DataReader和自定义的DataReaderListener eprosima::fastdds::dds::DataReader* reader = ...; // 获取一个DataReader实例 ...
virtual void on_data_on_readers( Subscriber* sub) { static_cast<void>(sub); std::cout << "New data available" << std::endl; } }; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. ...
void HelloSevenSubscriber::SubListener::on_data_available( DataReader* reader) { // Take data HelloSeven st; SampleInfo info; if (reader->take_next_sample(&st, &info) == ReturnCode_t::RETCODE_OK) { if (info.valid_data) { // Print your structure data here. ...
{}voidon_publication_matched(DataWriter*,constPublicationMatchedStatus&info)override{if(info.current_count_change==1){matched_=info.total_count;std::cout<<"Publisher matched."<<std::endl;}elseif(info.current_count_change==-1){matched_=info.total_count;std::cout<<"Publisher unmatched."<<std...
.. |DomainListener::on_data_available-api| replace:: :cpp:func:`on_data_available()<eprosima::statistics_backend::DomainListener::on_data_available>` .. |DomainListener::on_topic_discovery-api| replace:: :cpp:func:`on_topic_discovery()<eprosima::statistics_backend::DomainListener::on_topic...
DataReaderListenerlistener=newDataReaderListener(){@Overridepublicvoidon_data_available(DataReaderreader){Greetinggreeting=newGreeting();reader.take_next_sample(greeting,null);System.out.println("Data received: "+greeting.message);}};DataReaderreader=subscriber.create_datareader(participant.create_topic(...
第二个覆盖(override)回调函数是on_data_available,当datareader接收到datawriter发送的新数据时,会触发该回调函数。 voidon_data_available(DataReader*reader)override{SampleInfo info;if(reader->take_next_sample(&hello_,&info)==ReturnCode_t::RETCODE_OK){if(info.valid_data){samples_++;std::cout<<"...