org.omg.dds.core.policy

Interface RequestedOffered<SELF>

Type Parameters:

SELF - The QoS policy interface that extends this interface.

All Superinterfaces:

Comparable<SELF>

All Known Subinterfaces:

DataRepresentation, Deadline, DestinationOrder, Durability, LatencyBudget, Liveliness, Ownership, Presentation, Reliability, TypeConsistencyEnforcement

public interface RequestedOffered<SELF>
extends Comparable<SELF>

This interface is implemented by QoS policies that enforce a Request/Offer contract between publications and subscriptions -- that is, for which the level of service offered by the publication is greater than or equal to that requested by the subscription. Details of this contract are provided in each of the implementing types.

Method Summary

Methods

Modifier and Type	Method and Description
Comparable<SELF>	requestedOfferedContract() Use the object returned by this method to evaluate the Request/Offer relationship with another instance of this policy.

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

requestedOfferedContract

Comparable<SELF> requestedOfferedContract()

Use the object returned by this method to evaluate the Request/Offer relationship with another instance of this policy. If this policy is offered by a DataWriter (or Publisher), any other policy evaluated as less than or equal to it by the Comparable may be compatibly requested by a DataReader (or Subscriber). Similarly, if this policy is requested, any other policy that is greater than or equal to it may be compatibly offered.

Returns:

a Comparable object capable of evaluating the Request/Offer relationship between two instances of the QoS policy identified by the type parameter SELF.