Subscribers

DDS::Subscriber entity and associated elements More...

Classes
class	DDS::SubscriberQos
	QoS policies supported by a DDS::Subscriber entity. More...
class	DDS::SubscriberListener
	<<interface>> DDS::Listener for status about a subscriber. More...
class	DDS::SubscriberSeq
	Declares IDL sequence < DDS::Subscriber > . More...
class	DDS::Subscriber
	<<interface>> A subscriber is the object responsible for actually receiving data from a subscription. More...

Properties
static DataReaderQos^	DDS::Subscriber::DATAREADER_QOS_DEFAULT [get]
	Special value for creating data reader with default QoS.
static DataReaderQos^	DDS::Subscriber::DATAREADER_QOS_USE_TOPIC_QOS [get]
	Special value for creating DDS::DataReader with a combination of the default DDS::DataReaderQos and the DDS::TopicQos.

Detailed Description

DDS::Subscriber entity and associated elements

Properties

DataReaderQos^ DDS::Subscriber::DATAREADER_QOS_DEFAULT

staticget

Special value for creating data reader with default QoS.

When used in DDS::Subscriber::create_datareader, this special value is used to indicate that the DDS::DataReader should be created with the default DDS::DataReader QoS by means of the operation get_default_datareader_qos and using the resulting QoS to create the DDS::DataReader.

When used in DDS::Subscriber::set_default_datareader_qos, this special value is used to indicate that the default QoS should be reset back to the initial value that would be used if the DDS::Subscriber::set_default_datareader_qos operation had never been called.

When used in DDS::DataReader::set_qos, this special value is used to indicate that the QoS of the DDS::DataReader should be changed to match the current default QoS set in the DDS::Subscriber that the DDS::DataReader belongs to.

Note: You cannot use this value to get the default QoS values for a DataReader; for this purpose, use DDS::DomainParticipant::get_default_datareader_qos.

See Also

DDS::Subscriber::create_datareader

DDS::Subscriber::set_default_datareader_qos

DDS::DataReader::set_qos

Examples:

HelloWorld_subscriber.cpp.

DataReaderQos^ DDS::Subscriber::DATAREADER_QOS_USE_TOPIC_QOS

staticget

Special value for creating DDS::DataReader with a combination of the default DDS::DataReaderQos and the DDS::TopicQos.

The use of this value is equivalent to the application obtaining the default DDS::DataReaderQos and the DDS::TopicQos (by means of the operation DDS::Topic::get_qos) and then combining these two QoS using the operation DDS::Subscriber::copy_from_topic_qos whereby any policy that is set on the DDS::TopicQos "overrides" the corresponding policy on the default QoS. The resulting QoS is then applied to the creation of the DDS::DataReader.

This value should only be used in DDS::Subscriber::create_datareader.

See Also

DDS::Subscriber::create_datareader

DDS::Subscriber::get_default_datareader_qos

DDS::Topic::get_qos

DDS::Subscriber::copy_from_topic_qos