DDS::ServiceRequest Class Reference

A request coming from one of the built-in services. More...

#include <managed_builtin.h>

Inheritance diagram for DDS::ServiceRequest:

Public Attributes
System::Int32	service_id
	The id of the service that the request was sent on. More...
GUID_t	instance_id
	Each ServiceRequest is keyed on the instance_id. More...
ByteSeq ^	request_body
	Service-specific information. More...

Properties
static System::Int32	UNKNOWN_SERVICE_ID [get]
	An invalid Service Id. More...
static System::Int32	TOPIC_QUERY_SERVICE_ID [get]
	Service Id for the DDS::TopicQuery Service. More...

Detailed Description

A request coming from one of the built-in services.

Data associated with the built-in topic DDS::ServiceRequestTypeSupport::SERVICE_REQUEST_TOPIC_NAME. It contains service-specific information.

See also

DDS::ServiceRequestTypeSupport::SERVICE_REQUEST_TOPIC_NAME

DDS::ParticipantBuiltinTopicDataDataReader

Member Data Documentation

service_id

System::Int32 DDS::ServiceRequest::service_id

The id of the service that the request was sent on.

There can be multiple services that use the built-in ServiceRequest topic. The service_id identifies which service a specific request was sent from.

See also

DDS::ServiceRequest::UNKNOWN_SERVICE_REQUEST_ID

DDS::ServiceRequest::TOPIC_QUERY_SERVICE_ID

instance_id

GUID_t DDS::ServiceRequest::instance_id

Each ServiceRequest is keyed on the instance_id.

The instance_id provides a way for users to differentiate between different requests coming from the same service.

request_body

ByteSeq ^ DDS::ServiceRequest::request_body

Service-specific information.

Each service uses the request_body field to send information specific to that service in the form of an opaque sequence of bytes. Each service provides a helper function that will deserialize the information from the request body.

See also

DDS::TopicQueryHelper::topic_query_data_from_service_request