DataTagQosPolicy Class Reference

Stores (name, value) pairs that can be used to determine access permissions. More...

Inheritance diagram for DataTagQosPolicy:

Public Attributes
final TagSeq	tags = new TagSeq()
	Sequence of data tags.
Public Attributes inherited from QosPolicy
final QosPolicyId_t	id
	The ID of this QoS policy.
final String	policy_name
	The name of this QoS policy.

Additional Inherited Members
Public Member Functions inherited from Struct
abstract boolean	equals (Object obj)
abstract int	hashCode ()
String	toString ()
Protected Member Functions inherited from Struct
	Struct ()
abstract void	pull_from_nativeI (long native_status)
abstract void	push_to_nativeI (long native_status)

Detailed Description

Stores (name, value) pairs that can be used to determine access permissions.

Entity:

com.rti.dds.subscription.DataReader com.rti.dds.publication.DataWriter

Properties:

RxO = N/A;
Changeable = NO

Usage

The DATA_TAG QoS policy can be used to associate a set of tags in the form of (name, value) pairs with a com.rti.dds.subscription.DataReader or com.rti.dds.publication.DataWriter. This is similar to the com.rti.dds.infrastructure.PropertyQosPolicy, except for the following differences:

• Data tags are always propagated. You cannot select whether or not a particular pair should be propagated.

• Data tags are not exposed to API functions, such as com.rti.dds.publication.DataWriter.get_matched_subscription_data, that receive com.rti.dds.publication.builtin.PublicationBuiltinTopicData or com.rti.dds.subscription.builtin.SubscriptionBuiltinTopicData as a parameter.

• Connext passes data tags to the Access Control Security Plugin, which may use them to decide whether to allow or deny the corresponding entities.

There are helper functions to facilitate working with data tags. See the DATA_TAG page.

Member Data Documentation

final TagSeq tags = new TagSeq()

Sequence of data tags.

[default] An empty list.