<<interface>> Conditions specifically dedicated to read operations and attached to one DDS::DataReader. More...

#include <managed_subscription.h>

Inheritance diagram for DDS::ReadCondition:

Public Member Functions
System::UInt32	get_sample_state_mask ()
	Retrieves the set of `sample_states` for the condition.

System::UInt32	get_view_state_mask ()
	Retrieves the set of `view_states` for the condition.

System::UInt32	get_instance_state_mask ()
	Retrieves the set of `instance_states` for the condition.

DataReader^	get_datareader ()
	Returns the DDS::DataReader associated with the DDS::ReadCondition.

virtual System::Boolean	get_trigger_value () override
	Retrieve the `trigger_value`.

Detailed Description

<<interface>> Conditions specifically dedicated to read operations and attached to one DDS::DataReader.

DDS::ReadCondition objects allow an application to specify the data samples it is interested in (by specifying the desired sample_states, view_states as well as instance_states in DDS::TypedDataReader::read and DDS::TypedDataReader::take variants.

This allows RTI Connext to enable the condition only when suitable information is available. They are to be used in conjunction with a WaitSet as normal conditions.

More than one DDS::ReadCondition may be attached to the same DDS::DataReader.

Note: If you are using a ReadCondition simply to detect the presence of new data, consider using a DDS::StatusCondition with the DATA_AVAILABLE_STATUS instead, which will perform better in this situation.