Struct TopicDescriptionHandle 

pub struct TopicDescriptionHandle { /* private fields */ }

Untyped TopicDescription handle returned from DomainParticipant::lookup_topicdescription / DomainParticipant::find_topic.

The spec API returns the abstract base class because the caller generally does not yet know the type (e.g. after discovery). We pack name + type name + participant into a cloneable handle; the caller can read get_type_name() and then obtain a typed handle via create_topic::<T>.

Trait Implementations

impl Clone for TopicDescriptionHandle

fn clone(&self) -> TopicDescriptionHandle

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TopicDescriptionHandle

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl TopicDescription for TopicDescriptionHandle

fn get_type_name(&self) -> &str

Type name (e.g. "std_msgs::msg::String"). Spec §2.2.2.3.1 get_type_name.

fn get_name(&self) -> &str

Topic name (e.g. "ChatterTopic"). Spec §2.2.2.3.1 get_name.

fn get_participant(&self) -> &DomainParticipant

Owning participant. Spec §2.2.2.3.1 get_participant.