The topic profiles allow for configuring |Topic| from an XML file.
These profiles are defined within the <topic> XML tags.
The <topic> element has two attributes defined: profile_name and is_default_profile.
| Name | Description | Use |
|---|---|---|
profile_name |
Sets the name under which the <topic> profile is registered in the DDS Domain, |br|
so that it can be loaded later by the |DataWriter| or the |DataReader| |
Mandatory |
is_default_profile |
Sets the <topic> profile as the default profile. Thus, if a default profile |br|
exists, it will be used when no other Topic profile is specified at the |br|
Topic's creation. |
Optional |
This XML element allows the configuration of the :ref:`dds_layer_topic_topicQos`.
| Name | Description | Values |
|---|---|---|
<historyQos> |
It controls the behavior of Fast DDS |br| when the value of an instance changes |br| before it is finally communicated to |br| some of its existing DataReaders. |br| | :ref:`hQos` |
<resourceLimitsQos> |
It controls the resources that Fast DDS |br| can use in order to meet the |br| requirements imposed by the application |br| and other QoS settings. | :ref:`rLsQos` |
Example
.. literalinclude:: /../code/XMLTester.xml
:language: xml
:start-after: <!-->XML-TOPIC-PROFILE<-->
:end-before: <!--><-->