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Subscribers

DDSSubscriber entity and associated elements More...

Classes

struct  DDS_SubscriberQos
 QoS policies supported by a DDSSubscriber entity. More...
 
class  DDSSubscriberListener
 <<interface>> DDSListener for status about a subscriber. More...
 
class  DDSSubscriberSeq
 Declares IDL sequence < DDSSubscriber > . More...
 
class  DDSSubscriber
 <<interface>> A subscriber is the object responsible for actually receiving data from a subscription. More...
 

Functions

DDS_Boolean DDS_SubscriberQos_equals (const struct DDS_SubscriberQos *self, const struct DDS_SubscriberQos *other)
 Compares two DDS_SubscriberQos for equality.
 

Variables

struct DDS_DataReaderQos DDS_DATAREADER_QOS_DEFAULT
 Special value for creating data reader with default QoS.
 
struct DDS_DataReaderQos DDS_DATAREADER_QOS_USE_TOPIC_QOS
 Special value for creating DDSDataReader with a combination of the default DDS_DataReaderQos and the DDS_TopicQos.
 

Detailed Description

DDSSubscriber entity and associated elements

Function Documentation

DDS_Boolean DDS_SubscriberQos_equals ( const struct DDS_SubscriberQos self,
const struct DDS_SubscriberQos other 
)

Compares two DDS_SubscriberQos for equality.

Parameters
self<<in>> This SubscriberQos.
other<<in>> The other SubscriberQos to be compared with this SubscriberQos.
Returns
DDS_BOOLEAN_TRUE if the two Qos objects are equal or DDS_BOOLEAN_FALSE otherwise.

Referenced by DDS_SubscriberQos::operator!=(), and DDS_SubscriberQos::operator==().

Variable Documentation

struct DDS_DataReaderQos DDS_DATAREADER_QOS_DEFAULT

Special value for creating data reader with default QoS.

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

When used in DDSSubscriber::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 DDSSubscriber::set_default_datareader_qos operation had never been called.

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

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

See Also
DDSSubscriber::create_datareader
DDSSubscriber::set_default_datareader_qos
DDSDataReader::set_qos
Examples:
HelloWorld_subscriber.cxx.
struct DDS_DataReaderQos DDS_DATAREADER_QOS_USE_TOPIC_QOS

Special value for creating DDSDataReader 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 DDSTopic::get_qos) and then combining these two QoS using the operation DDSSubscriber::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 DDSDataReader.

This value should only be used in DDSSubscriber::create_datareader.

See Also
DDSSubscriber::create_datareader
DDSSubscriber::get_default_datareader_qos
DDSTopic::get_qos
DDSSubscriber::copy_from_topic_qos

RTI Connext Traditional C++ API Version 6.0.0 Copyright © Sun Mar 3 2019 Real-Time Innovations, Inc