type Ref is limited interface and DDS.Condition.Ref;
type Ref_Access is access all Ref'Class;
function Get_Sample_State_Mask
| ( | Self | : not null access Ref) return DDS.SampleStateMask is abstract; |
self: <<in>> Cannot be NULL
function Get_View_State_Mask
| ( | Self | : not null access Ref) return DDS.ViewStateMask is abstract; |
self: <<in>> Cannot be NULL
function Get_Instance_State_Mask
| ( | Self | : not null access Ref) return DDS.InstanceStateMask is abstract; |
self: <<in>> Cannot be NULL
function Get_DataReader
| ( | Self | : not null access Ref) return access DDS.DataReader.Ref'Class is abstract; |
There is exactly one DDS.DataReader assicated with each DDS.ReadCondition.
self: <<in>> Cannot be NULL
Returns: DDS.DataReader associated with the DDS.ReadCondition.
DDS.ReadCondition objects allow an application to specify the data samples it is interested in (by specifying the desired sample_states, view_states as well as instance_states in FooDataReader.read and FooDataReader.take variants.
This allows RTI Connext to enable the condition only when suitable information is available. They are to be used in conjunction with a WaitSet as normal conditions.
More than one DDS.ReadCondition may be attached to the same DDS.DataReader.