<<reference-type>> Topic is the most basic description of the data to be published and subscribed. More...

#include <dds/topic/Topic.hpp>

Inheritance diagram for dds::topic::Topic< T >:

Public Member Functions
	Topic (const dds::domain::DomainParticipant &the_participant, const std::string &topic_name)
	Creates a new topic. More...

	Topic (const dds::domain::DomainParticipant &dp, const std::string &topic_name, const std::string &the_type_name)
	Creates a new topic. More...

	Topic (const dds::domain::DomainParticipant &dp, const std::string &topic_name, const dds::topic::qos::TopicQos &the_qos, dds::topic::TopicListener< T > *the_listener=NULL, const dds::core::status::StatusMask &mask=dds::core::status::StatusMask::all())
	Creates a new Topic. More...

	Topic (const dds::domain::DomainParticipant &participant, const std::string &topic_name, const std::string &type_name, const dds::topic::qos::TopicQos &the_qos, dds::topic::TopicListener< T > *the_listener=NULL, const dds::core::status::StatusMask &mask=dds::core::status::StatusMask::all())
	Create a new topic. More...

	Topic (const dds::domain::DomainParticipant &the_participant, const std::string &topic_name, const dds::core::xtypes::DynamicType &type)
	Create a new topic with a dynamic type description. More...

	Topic (const dds::domain::DomainParticipant &the_participant, const std::string &topic_name, const dds::core::xtypes::DynamicType &type, const dds::topic::qos::TopicQos &the_qos, dds::topic::TopicListener< T > *the_listener=NULL, const dds::core::status::StatusMask &mask=dds::core::status::StatusMask::all())
	Create a new topic with a dynamic type description. More...

	Topic (const dds::domain::DomainParticipant &dp, const std::string &topic_name, const dds::topic::qos::TopicQos &the_qos, std::shared_ptr< Listener > the_listener, const dds::core::status::StatusMask &mask=dds::core::status::StatusMask::all())
	Creates a new Topic. More...

	Topic (const dds::domain::DomainParticipant &participant, const std::string &topic_name, const std::string &type_name, const dds::topic::qos::TopicQos &the_qos, std::shared_ptr< Listener > the_listener, const dds::core::status::StatusMask &mask=dds::core::status::StatusMask::all())
	Create a new topic. More...

	Topic (const dds::domain::DomainParticipant &the_participant, const std::string &topic_name, const dds::core::xtypes::DynamicType &type, const dds::topic::qos::TopicQos &the_qos, std::shared_ptr< Listener > the_listener, const dds::core::status::StatusMask &mask=dds::core::status::StatusMask::all())
	Create a new topic with a dynamic type description. More...

void	listener (Listener *the_listener, const ::dds::core::status::StatusMask &event_mask)
	Sets the listener. More...

Listener *	listener () const
	Gets the listener. More...

void	set_listener (std::shared_ptr< Listener > the_listener, const dds::core::status::StatusMask &event_mask)
	Sets the listener associated with this topic. More...

void	set_listener (std::shared_ptr< Listener > the_listener)
	Sets the listener associated with this topic. More...

std::shared_ptr< Listener >	get_listener () const
	Returns the listener currently associated with this topic. More...

const dds::topic::qos::TopicQos	qos () const
	Gets the current TopicQos for this Topic. More...

void	qos (const dds::topic::qos::TopicQos &the_qos)
	Sets the TopicQos setting for this Topic. More...

dds::core::status::InconsistentTopicStatus	inconsistent_topic_status () const
	Retrieve the current InconsistentTopicStatus of this Topic. More...

Public Member Functions inherited from dds::topic::TopicDescription< T >
const std::string &	name () const
	Gets the topic name. More...

const std::string &	type_name () const
	Gets the type name. More...

const dds::domain::DomainParticipant &	participant () const
	Gets the related dds::domain::DomainParticipant. More...

Public Member Functions inherited from dds::core::Entity
void	enable ()
	Enables this entity (if it was created disabled) More...

const dds::core::status::StatusMask	status_changes ()
	Retrieves the list of communication statuses that are triggered. More...

const dds::core::InstanceHandle	instance_handle () const
	Get the instance handle that represents this entity. More...

void	close ()
	Forces the destruction of this entity. More...

void	retain ()
	Disables the automatic destruction of this entity. More...

Related Functions
(Note that these are not member functions.)
template<typename FwdIterator >
int32_t	discover_any_topic (const dds::domain::DomainParticipant &participant, FwdIterator begin, int32_t max_size)
	Retrieves the topics discovered in a DomainParticipant. More...

template<typename BinIterator >
int32_t	discover_any_topic (const dds::domain::DomainParticipant &participant, BinIterator begin)
	Retrieves the topics discovered in a DomainParticipant. More...

dds::topic::TopicBuiltinTopicData	discover_topic_data (const dds::domain::DomainParticipant &participant, const dds::core::InstanceHandle &topic_handle)
	Gets the information about a discovered topic. More...

template<typename FwdIterator >
int32_t	discover_topic_data (const dds::domain::DomainParticipant &participant, FwdIterator begin, const dds::core::InstanceHandleSeq &handles)
	Gets the information about several topics. More...

template<typename FwdIterator >
int32_t	discover_topic_data (const dds::domain::DomainParticipant &participant, FwdIterator begin, int32_t max_size)
	Gets the information about all topics. More...

template<typename BinIterator >
int32_t	discover_topic_data (const dds::domain::DomainParticipant &participant, BinIterator begin)
	Gets the information about all topics. More...

void	ignore (dds::domain::DomainParticipant &participant, const dds::core::InstanceHandle &handle)
	Instructs a DomainParticipant to ignore a topic. More...

template<typename FwdIterator >
void	ignore (dds::domain::DomainParticipant &participant, FwdIterator begin, FwdIterator end)
	Ignores a range of topics. More...

template<typename TOPIC >
TOPIC	find (const dds::domain::DomainParticipant &participant, const std::string &topic_name)
	Looks up a Topic from a DomainParticipant. More...

template<typename AnyTopicBackInsertIterator >
uint32_t	find_topics (dds::domain::DomainParticipant participant, AnyTopicBackInsertIterator begin)
	<<extension>> Retrieve all the dds::topic::Topic created from this dds::domain::DomainParticipant More...

template<typename AnyTopicForwardIterator >
uint32_t	find_topics (dds::domain::DomainParticipant participant, AnyTopicForwardIterator begin, uint32_t max_size)
	<<extension>> Retrieve all the dds::topic::Topic created from this dds::domain::DomainParticipant More...

Related Functions inherited from dds::core::Entity
template<typename TO , typename FROM >
TO	polymorphic_cast (const FROM &from)
	Downcasts an Entity to a subclass. More...

Detailed Description

template<typename T>
class dds::topic::Topic< T >

<<reference-type>> Topic is the most basic description of the data to be published and subscribed.

Template Parameters

T	The type associated to this topic. It must be a type such that `dds::topic::is_topic_type<T>::value` is true (see dds::topic::is_topic_type). Valid types are IDL-generated types, the built-in types and dds::core::xtypes::DynamicData.

QoS:: dds::topic::qos::TopicQos

Status:: dds::core::status::StatusMask::inconsistent_topic(), dds::core::status::InconsistentTopicStatus

Listener:: TopicListener

A dds::topic::Topic is identified by its name, which must be unique in the whole domain. In addition (by virtue of extending TopicDescription) it fully specifies the type of the data that can be communicated when publishing or subscribing to the dds::topic::Topic.

dds::topic::Topic is the only TopicDescription that can be used for publications and therefore associated with a dds::pub::DataWriter.

The following operations may be called even if the dds::topic::Topic is not enabled. Other operations will fail with the value dds::core::NotEnabledError if called on a disabled dds::topic::Topic:

See also: Operations Allowed in Listener Callbacks

Examples:: Foo_publisher.cxx, and Foo_subscriber.cxx.

Constructor & Destructor Documentation

◆ Topic() [1/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	the_participant,
		const std::string &	topic_name
	)

inline

Creates a new topic.

This constructor automatically deduces the type name, uses the default TopicQos and doesn't set a listener.

Parameters

the_participant	The domain participant on which the topic will be defined.
topic_name	The topic name.

◆ Topic() [2/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	dp,
		const std::string &	topic_name,
		const std::string &	the_type_name
	)

inline

Creates a new topic.

This constructor uses the default TopicQos and doesn't set a listener.

Parameters

dp	The domain participant on which the topic will be defined.
topic_name	The topic name.
the_type_name	The name to register the type with

◆ Topic() [3/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	dp,
		const std::string &	topic_name,
		const dds::topic::qos::TopicQos &	the_qos,
		dds::topic::TopicListener< T > *	the_listener = `NULL`,
		const dds::core::status::StatusMask &	mask = `dds::core::status::StatusMask::all()`
	)

inline

Creates a new Topic.

[DEPRECATED] When using a listener, prefer the constructor that receives a shared_ptr<Listener> instead of a regular Listener* pointer.

This constructor deduces the type name automatically

◆ Topic() [4/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	participant,
		const std::string &	topic_name,
		const std::string &	type_name,
		const dds::topic::qos::TopicQos &	the_qos,
		dds::topic::TopicListener< T > *	the_listener = `NULL`,
		const dds::core::status::StatusMask &	mask = `dds::core::status::StatusMask::all()`
	)

inline

Create a new topic.

[DEPRECATED] When using a listener, prefer the constructor that receives a shared_ptr<Listener> instead of a regular Listener* pointer.

Parameters

participant	The domain participant on which the topic will be defined.
topic_name	The Topic name. Must not exceed 255 characters.
type_name	The name given to the type `T`
the_qos	The Qos settings for this Topic
the_listener	the topic listener (default: NULL)
mask	the event mask associated to the DataReader listener.

See also: Specifying QoS on entities for information on setting QoS before entity creation; dds::topic::qos::TopicQos for rules on consistency among QoS; dds::core::QosProvider; dds::domain::DomainParticipant::default_topic_qos(); listener()

◆ Topic() [5/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	the_participant,
		const std::string &	topic_name,
		const dds::core::xtypes::DynamicType &	type
	)

inline

Create a new topic with a dynamic type description.

This constructor uses a dynamic type description, the default TopicQos and doesn't set a listener.

◆ Topic() [6/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	the_participant,
		const std::string &	topic_name,
		const dds::core::xtypes::DynamicType &	type,
		const dds::topic::qos::TopicQos &	the_qos,
		dds::topic::TopicListener< T > *	the_listener = `NULL`,
		const dds::core::status::StatusMask &	mask = `dds::core::status::StatusMask::all()`
	)

inline

Create a new topic with a dynamic type description.

[DEPRECATED] When using a listener, prefer the constructor that receives a shared_ptr<Listener> instead of a regular Listener* pointer.

Notice that in this case the data type T has to be DynamicData. Thus the Topic type will be Topic<DynamicData>.

Parameters

the_participant	the domain participant on which the topic will be defined.
topic_name	the topic's name.
type	The DynamicType that describes the type for the DynamicData samples of this topic.
the_qos	The Qos settings for this Topic
the_listener	the topic listener (default: NULL)
mask	the event mask associated to the DataReader listener.

See also: dds::core::xtypes::DynamicData; rti::domain::register_type()

◆ Topic() [7/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	dp,
		const std::string &	topic_name,
		const dds::topic::qos::TopicQos &	the_qos,
		std::shared_ptr< Listener >	the_listener,
		const dds::core::status::StatusMask &	mask = `dds::core::status::StatusMask::all()`
	)

inline

Creates a new Topic.

This constructor deduces the type name automatically.

◆ Topic() [8/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	participant,
		const std::string &	topic_name,
		const std::string &	type_name,
		const dds::topic::qos::TopicQos &	the_qos,
		std::shared_ptr< Listener >	the_listener,
		const dds::core::status::StatusMask &	mask = `dds::core::status::StatusMask::all()`
	)

inline

Create a new topic.

Parameters

participant	The domain participant on which the topic will be defined.
topic_name	The Topic name. Must not exceed 255 characters.
type_name	The name given to the type `T`
the_qos	The Qos settings for this Topic
the_listener	A shared_ptr to the listener. See set_listener() for more information.
mask	Indicates which status updates the listener will receive

See also: Specifying QoS on entities for information on setting QoS before entity creation; dds::topic::qos::TopicQos for rules on consistency among QoS; dds::core::QosProvider; dds::domain::DomainParticipant::default_topic_qos(); listener()

◆ Topic() [9/9]

template<typename T>

dds::topic::Topic< T >::Topic	(	const dds::domain::DomainParticipant &	the_participant,
		const std::string &	topic_name,
		const dds::core::xtypes::DynamicType &	type,
		const dds::topic::qos::TopicQos &	the_qos,
		std::shared_ptr< Listener >	the_listener,
		const dds::core::status::StatusMask &	mask = `dds::core::status::StatusMask::all()`
	)

inline

Create a new topic with a dynamic type description.

Notice that in this case the data type T has to be DynamicData. Thus the Topic type will be Topic<DynamicData>.

Parameters

the_participant	the domain participant on which the topic will be defined.
topic_name	the topic's name.
type	The DynamicType that describes the type for the DynamicData samples of this topic.
the_qos	The Qos settings for this Topic
the_listener	A shared_ptr to the listener. See set_listener() for more information.
mask	Indicates which status updates the listener will receive

See also: dds::core::xtypes::DynamicData; rti::domain::register_type()

Member Function Documentation

◆ listener() [1/2]

template<typename T>

void dds::topic::Topic< T >::listener	(	Listener *	the_listener,
		const ::dds::core::status::StatusMask &	event_mask
	)

inline

Sets the listener.

[DEPRECATED] The use of set_listener() is recommended. Unlike this function, set_listener receives a shared_ptr which simplifies the management of listener's lifecycle.

Parameters

the_listener	the topic listener
event_mask	Changes of communication status to be invoked on the listener

◆ listener() [2/2]

template<typename T>

Listener* dds::topic::Topic< T >::listener ( ) const

inline

Gets the listener.

[DEPRECATED] Prefer get_listener() instead of this function.

Returns the listener or NULL if there's no listener attached.

◆ set_listener() [1/2]

template<typename T>

void dds::topic::Topic< T >::set_listener	(	std::shared_ptr< Listener >	the_listener,
		const dds::core::status::StatusMask &	event_mask
	)

inline

Sets the listener associated with this topic.

The topic will hold a shared_ptr to the listener argument, ensuring that it is not deleted at least until this topic is deleted or the listener is reset with set_listener(nullptr).

Warning: It's recommended that the listener implementation doesn't hold a permanent reference to the topic. If it does, the application needs to manually reset the listener or manually close this topic to ensure that there is no cycle that prevents the destruction of these two objects.

Parameters

the_listener	A shared pointer to the listener to receive status updates or `nullptr` to reset the current listener and stop receiving status updates.
event_mask	A mask that indicates which status updates will be notified to the listener

◆ set_listener() [2/2]

template<typename T>

void dds::topic::Topic< T >::set_listener ( std::shared_ptr< Listener > the_listener )

inline

Sets the listener associated with this topic.

If the_listener is not nullptr, this overload is equivalent to:

topic.set_listener(the_listener, dds::core::status::StatusMask::all());

If the_listener is nullptr, it is equivalent to:

topic.set_listener(nullptr, dds::core::status::StatusMask::none());

Parameters

the_listener A shared pointer to the listener to receive status updates or nullptr to reset the current listener and stop receiving status updates.

◆ get_listener()

template<typename T>

std::shared_ptr<Listener> dds::topic::Topic< T >::get_listener ( ) const

inline

Returns the listener currently associated with this topic.

Returns: The shared pointer to the current listener or nullptr if there is currently no listener associated to this entity.

◆ qos() [1/2]

template<typename T>

const dds::topic::qos::TopicQos dds::topic::Topic< T >::qos ( ) const

inline

Gets the current TopicQos for this Topic.

◆ qos() [2/2]

template<typename T>

void dds::topic::Topic< T >::qos ( const dds::topic::qos::TopicQos & the_qos )

inline

Sets the TopicQos setting for this Topic.

Parameters

the_qos Set of policies to be applied to the Topic. Immutable policies cannot be changed after this entity has been enabled.

Exceptions

dds::core::ImmutablePolicyError	if `the_qos` contains a different value for an immutable policy.
dds::core::InconsistentPolicyError	if some policies are inconsistent.

See also: dds::topic::qos::TopicQos for rules on consistency among QoS policies; set_qos (abstract); dds::domain::DomainParticipant::default_topic_qos(); dds::core::QosProvider::topic_qos()

◆ inconsistent_topic_status()

template<typename T>

dds::core::status::InconsistentTopicStatus dds::topic::Topic< T >::inconsistent_topic_status ( ) const

inline

Retrieve the current InconsistentTopicStatus of this Topic.

Friends And Related Function Documentation

◆ discover_any_topic() [1/2]

template<typename FwdIterator >

int32_t discover_any_topic	(	const dds::domain::DomainParticipant &	participant,
		FwdIterator	begin,
		int32_t	max_size
	)

Template Parameters

FwdIterator A forward iterator whose value type is dds::core::InstanceHandle

Parameters

participant	The DomainParticipant where to look up the discovered topics
begin	The beginning of the range where to insert the InstanceHandles that correspond to the discovered topics
max_size	The maximum number of topics to insert or dds::core::LENGTH_UNLIMITED

◆ discover_any_topic() [2/2]

template<typename BinIterator >

int32_t discover_any_topic	(	const dds::domain::DomainParticipant &	participant,
		BinIterator	begin
	)

This is equivalent to discover_any_topic(participant, begin, dds::core::LENGTH_UNLIMITED)

◆ discover_topic_data() [1/4]

template<typename T>

dds::topic::TopicBuiltinTopicData discover_topic_data	(	const dds::domain::DomainParticipant &	participant,
		const dds::core::InstanceHandle &	topic_handle
	)

Returns dds::topic::TopicBuiltinTopicData for the specified dds::topic::Topic.

This operation retrieves information on a dds::topic::Topic that has been discovered by the local Participant and must not have been "ignored" by means of the dds::topic::ignore() operation.

The topic_handle must correspond to such a topic. Otherwise, the operation will fail with dds::core::PreconditionNotMetError.

This call is not supported for remote topics. If a remote topic_handle is used, the operation will fail with dds::core::UnsupportedError.

Use the operation dds::topic::discover_any_topic() to find the topics that are currently discovered.

Parameters

participant	The DomainParticipant where to look up the topic information
topic_handle	<<in>> dds::core::InstanceHandle of dds::topic::Topic.

Exceptions

One	of the Standard Exceptions, dds::core::PreconditionNotMetError or dds::core::NotEnabledError

See also: dds::topic::TopicBuiltinTopicData; dds::topic::discover_any_topic()

◆ discover_topic_data() [2/4]

template<typename FwdIterator >

int32_t discover_topic_data	(	const dds::domain::DomainParticipant &	participant,
		FwdIterator	begin,
		const dds::core::InstanceHandleSeq &	handles
	)

◆ discover_topic_data() [3/4]

template<typename FwdIterator >

int32_t discover_topic_data	(	const dds::domain::DomainParticipant &	participant,
		FwdIterator	begin,
		int32_t	max_size
	)

Template Parameters

A	forward iterator whose value type is dds::topic::TopicBuiltinTopicData

Parameters

participant	The DomainParticipant where to look up all the topics
begin	The beginning of a range where to copy the topic data
max_size	The maximum number of items to copy or dds::core::LENGTH_UNLIMITED

◆ discover_topic_data() [4/4]

template<typename BinIterator >

int32_t discover_topic_data	(	const dds::domain::DomainParticipant &	participant,
		BinIterator	begin
	)

◆ ignore() [1/2]

template<typename T>

void ignore	(	dds::domain::DomainParticipant &	participant,
		const dds::core::InstanceHandle &	handle
	)

Instructs RTI Connext to locally ignore a dds::topic::Topic.

This means it will locally ignore any publication, or subscription to the dds::topic::Topic.

There is no way to reverse this operation.

This operation can be used to save local resources when the application knows that it will never publish or subscribe to data under certain topics.

The dds::topic::Topic to ignore is identified by the handle argument. This is the handle of a dds::topic::Topic that appears in the dds::sub::SampleInfo retrieved when reading data samples from the built-in dds::sub::DataReader for the dds::topic::Topic.

Parameters

participant	The DomainParticipant where to ignore the topic
handle	<<in>> Handle of the dds::topic::Topic to be ignored.

Exceptions

One	of the Standard Exceptions, dds::core::OutOfResourcesError or dds::core::NotEnabledError

See also: dds::topic::TopicBuiltinTopicData; dds::topic::topic_topic_name(); dds::sub::builtin_subscriber

◆ ignore() [2/2]

template<typename FwdIterator >

void ignore	(	dds::domain::DomainParticipant &	participant,
		FwdIterator	begin,
		FwdIterator	end
	)

See also: ignore(dds::domain::DomainParticipant&,const dds::core::InstanceHandle&)

◆ find()

template<typename TOPIC >

TOPIC find	(	const dds::domain::DomainParticipant &	participant,
		const std::string &	topic_name
	)

Template Parameters

TOPIC

The topic to find; it can be one of the following:

A typed TopicDescription, such as dds::topic::TopicDescription<Foo>,
A typed Topic, such as dds::topic::Topic<Foo>
A typed ContentFilteredTopic, such as dds::topic::ContentFilteredTopic<Foo>
dds::topic::AnyTopic

Parameters

participant	The DomainParticipant that contains the Topic
topic_name	The topic name

Returns: A reference to an existing Topic in this participant or an empty reference (i.e. equals to dds::core::null) if it doesn't exist.

Exceptions

dds::core::InvalidDowncastError If the concrete type of the topic description identified by topic_name is not TOPIC. For example, if the topic_name identifies a topic of type Bar, but the template parameter was dds::topic::Topic<Foo>.

The participant doesn't need to be enabled. The returned topic may be enabled or disabled.

◆ find_topics() [1/2]

template<typename AnyTopicBackInsertIterator >

uint32_t find_topics	(	dds::domain::DomainParticipant	participant,
		AnyTopicBackInsertIterator	begin
	)

Note: This is a standalone function in the namespace rti::topic

Template Parameters

AnyTopicBackInsertIterator Type of the back-inserting iterator, whose value_type is dds::topic::AnyTopic.

Parameters

participant	The dds::domain::DomainParticipant the Topics belong to
begin	A back-inserting iterator to the position in the destination container to insert the found Topics into

Returns: The number of found Topics

◆ find_topics() [2/2]

template<typename AnyTopicForwardIterator >

uint32_t find_topics	(	dds::domain::DomainParticipant	participant,
		AnyTopicForwardIterator	begin,
		uint32_t	max_size
	)

Note: This is a standalone function in the namespace rti::topic

Template Parameters

AnyTopicBackInsertIterator Type of the back-inserting iterator, whose value_type is dds::topic::AnyTopic.

Parameters

participant	The dds::domain::DomainParticipant the Topics belong to
begin	A forward iterator to the position in the destination container to insert the found Topics in
max_size	The maximum number of Topics to return

Returns: The number of found Topics

Public Member Functions

Related Functions

Detailed Description

template<typename T> class dds::topic::Topic< T >

Constructor & Destructor Documentation

◆ Topic() [1/9]

◆ Topic() [2/9]

◆ Topic() [3/9]

◆ Topic() [4/9]

◆ Topic() [5/9]

◆ Topic() [6/9]

◆ Topic() [7/9]

◆ Topic() [8/9]

◆ Topic() [9/9]

Member Function Documentation

◆ listener() [1/2]

◆ listener() [2/2]

◆ set_listener() [1/2]

◆ set_listener() [2/2]

◆ get_listener()

◆ qos() [1/2]

◆ qos() [2/2]

◆ inconsistent_topic_status()

Friends And Related Function Documentation

◆ discover_any_topic() [1/2]

◆ discover_any_topic() [2/2]

◆ discover_topic_data() [1/4]

◆ discover_topic_data() [2/4]

◆ discover_topic_data() [3/4]

◆ discover_topic_data() [4/4]

◆ ignore() [1/2]

◆ ignore() [2/2]

◆ find()

◆ find_topics() [1/2]

◆ find_topics() [2/2]

template<typename T>
class dds::topic::Topic< T >