私の演習でOpenDDS
は、単一の IDL 構造から複数のトピックを作成したいと考えています。それは可能ですか? それ以外の場合は、その方法を教えてください。
私は以下のようにしていますが、それが正しい方法でない場合は修正してください。私が使用するサンプルは、OpenDDS-3.12/examples/DCPS/IntroductionToOpenDDS
IDL は次のとおりです。
StockQuoter.idl
---------------
module StockQuoter
{
#pragma DCPS_DATA_TYPE "StockQuoter::Quote"
#pragma DCPS_DATA_KEY "StockQuoter::Quote ticker"
struct Quote {
string ticker;
string exchange;
string full_name;
double value;
string data;
TimeBase::TimeT timestamp;
};
}
出版社.cpp
// Create TOPICS and TYPES Vector
std::stringstream ss;
for(unsigned int idx = 0; idx < 100; ++idx)
{
ss << (idx+1);
TOPICS.push_back("TOPIC" + std::string(ss.str()));
TYPES.push_back("TYPE" + std::string(ss.str()));
ss.clear();
ss.str(std::string());
}
// Register
for( unsigned int idx = 0; idx < 100; ++idx )
{
vec_quote_servent.push_back(new StockQuoter::QuoteTypeSupportImpl());
if (DDS::RETCODE_OK != vec_quote_servent[idx]->register_type(participant.in (), TYPES[idx].c_str()))
{
cerr << "register_type for " << TYPES[idx] << " failed." << endl;
ACE_OS::exit(1);
}
}
// Create a topics
for( unsigned int idx = 0; idx < 100; ++idx )
{
vec_quote_topic.push_back( participant->create_topic (TOPICS[idx].c_str(),
TYPES[idx].c_str(),
default_topic_qos,
DDS::TopicListener::_nil(),
::OpenDDS::DCPS::DEFAULT_STATUS_MASK));
if (CORBA::is_nil (vec_quote_topic[idx].in ())) {
cerr << "create_topic for " << TOPICS[idx] << " failed." << endl;
ACE_OS::exit(1);
}
}
// Create DataWriters
for( unsigned int idx = 0; idx < 100; ++idx )
{
vec_quote_base_dw.push_back( pub->create_datawriter(vec_quote_topic[idx].in (),
dw_default_qos,
DDS::DataWriterListener::_nil(),
::OpenDDS::DCPS::DEFAULT_STATUS_MASK) );
if (CORBA::is_nil (vec_quote_base_dw[idx].in ())) {
cerr << "create_datawriter for " << TOPICS[idx] << " failed." << endl;
ACE_OS::exit(1);
}
vec_quote_dw.push_back( StockQuoter::QuoteDataWriter::_narrow(vec_quote_base_dw[idx].in()) );
if (CORBA::is_nil (vec_quote_dw[idx].in ())) {
cerr << TOPICS[idx] << " could not be narrowed"<< endl;
ACE_OS::exit(1);
}
}
// Create handle
for( unsigned int idx = 0; idx < 100 ; ++idx )
{
{
StockQuoter::Quote topic2;
topic2.ticker = CORBA::string_dup(TOPICS[idx].c_str());
vec_topic_handle.push_back(vec_quote_dw[idx]->register_instance(topic2));
}
}
// Publish data
StockQuoter::Quote vec_quote;
vec_quote.exchange = STOCK_EXCHANGE_NAME;
vec_quote.ticker = CORBA::string_dup("VEC_TOPIC");
vec_quote.full_name = CORBA::string_dup("TOPIC Receipts");
vec_quote.value = 1600.0 + 10.0*i;
vec_quote.timestamp = get_timestamp();
for(unsigned int idx = 0; idx < 100; ++idx )
{
vec_quote.value += idx + 10;
cout << "Publishing " << TOPICS[idx] << " : " << vec_quote.value <<endl;
ret = vec_quote_dw[idx]->write(vec_quote, vec_topic_handle[idx]);
if (ret != DDS::RETCODE_OK) {
ACE_ERROR ((LM_ERROR, ACE_TEXT("(%P|%t) ERROR: TOPIC2 write returned %d.\n"), ret));
}
}