Use these QoS fields to configure the topic query feature.

See Querying Data, in the Core Libraries User's Manual, for more information about this feature.

Basic Settings


DDS_TopicQueryDispatchQosPolicy	publication_period
	<<basic>> <<extension>> Sets the periodic interval at which samples are published.

Advanced Settings


DDS_AsynchronousPublisherQosPolicy	disable_topic_query_publication
	[DEPRECATED] <<extension>> Disable topic query publication.

DDS_AsynchronousPublisherQosPolicy	topic_query_publication_thread
	<<extension>> Settings of the DDSTopicQuery publication thread.

DDS_DataReaderResourceLimitsQosPolicy	initial_topic_queries
	<<extension>> The initial number of TopicQueries allocated by a DDSDataReader.

DDS_DataReaderResourceLimitsQosPolicy	max_topic_queries
	<<extension>> The maximum number of active TopicQueries that a DDSDataReader can create.

DDS_DataWriterResourceLimitsQosPolicy	initial_active_topic_queries
	<<extension>> Represents the initial number of active topic queries a DDSDataWriter will manage.

DDS_DataWriterResourceLimitsQosPolicy	max_active_topic_queries
	<<extension>> Represents the maximum number of active topic queries a DDSDataWriter will manage.

DDS_DomainParticipantResourceLimitsQosPolicy	remote_topic_query_allocation
	<<extension>> Allocation settings applied to remote TopicQueries.

DDS_DomainParticipantResourceLimitsQosPolicy	remote_topic_query_hash_buckets
	[DEPRECATED] <<extension>> Number of hash buckets for remote TopicQueries.

DDS_TopicQueryDispatchQosPolicy	enable
	<<extension>> Allows this writer to dispatch TopicQueries

DDS_TopicQueryDispatchQosPolicy	samples_per_period
	<<extension>> Sets the maximum number of samples to publish in each publication_period.