org.omg.dds.core.policy

Interface GroupData

All Superinterfaces:

DDSObject, QosPolicy, QosPolicy.ForPublisher, QosPolicy.ForSubscriber, Serializable

public interface GroupData
extends QosPolicy.ForPublisher, QosPolicy.ForSubscriber

User data not known by the middleware, but distributed by means of built-in topics. The default value is an empty (zero-sized) sequence. Concerns: Publisher, Subscriber RxO: No Changeable: Yes The purpose of this QoS is to allow the application to attach additional information to the created Publisher or Subscriber. The value of the GROUP_DATA is available to the application on the DataReader and DataWriter entities and is propagated by means of the built-in topics. This QoS can be used by an application combination with the DataReaderListener and DataWriterListener to implement matching policies similar to those of the Partition except the decision can be made based on an application-defined policy.

Nested Class Summary

Nested classes/interfaces inherited from interface org.omg.dds.core.policy.QosPolicy

QosPolicy.ForDataReader, QosPolicy.ForDataWriter, QosPolicy.ForDomainParticipant, QosPolicy.ForDomainParticipantFactory, QosPolicy.ForPublisher, QosPolicy.ForSubscriber, QosPolicy.ForTopic

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getValue() Get a copy of the data.
GroupData	withValue(byte[] value, int offset, int length) Copy this policy and override the value of the property.

Methods inherited from interface org.omg.dds.core.DDSObject

getEnvironment

Method Detail

getValue

byte[] getValue()

Get a copy of the data.

withValue

GroupData withValue(byte[] value,
                  int offset,
                  int length)

Copy this policy and override the value of the property.

Returns:

a new policy