DURABILITY
[QoS Policies]

This QoS policy specifies whether or not RTI Data Distribution Service will store and deliver previously published data samples to new DDS::DataReader entities that join the network later. More...

Classes
struct	DDS::DurabilityQosPolicy
	This QoS policy specifies whether or not RTI Data Distribution Service will store and deliver previously published data samples to new DDS::DataReader entities that join the network later. More...
Enumerations
enum	DDS::DurabilityQosPolicyKind {   DDS::VOLATILE_DURABILITY_QOS,   DDS::TRANSIENT_LOCAL_DURABILITY_QOS,   DDS::TRANSIENT_DURABILITY_QOS,   DDS::PERSISTENT_DURABILITY_QOS }
	Kinds of durability. More...
Functions
static System::String^	DDS::DurabilityQosPolicy::get_durability_qos_policy_name ()
	Stringified human-readable name for DDS::DurabilityQosPolicy.

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Detailed Description

This QoS policy specifies whether or not RTI Data Distribution Service will store and deliver previously published data samples to new DDS::DataReader entities that join the network later.

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Enumeration Type Documentation

enum DDS::DurabilityQosPolicyKind

Kinds of durability.

QoS:

DDS::DurabilityQosPolicy

Enumerator:

VOLATILE_DURABILITY_QOS	[default] RTI Data Distribution Service does not need to keep any samples of data instances on behalf of any DDS::DataReader that is unknown by the DDS::DataWriter at the time the instance is written. In other words, RTI Data Distribution Service will only attempt to provide the data to existing subscribers.
TRANSIENT_LOCAL_DURABILITY_QOS	RTI Data Distribution Service will attempt to keep some samples so that they can be delivered to any potential late-joining DDS::DataReader. Which particular samples are kept depends on other QoS such as DDS::HistoryQosPolicy and DDS::ResourceLimitsQosPolicy. RTI Data Distribution Service is only required to keep the data in memory of the DDS::DataWriter that wrote the data. Data is not required to survive the DDS::DataWriter. For this setting to be effective, you must also set the DDS::ReliabilityQosPolicy::kind to DDS::ReliabilityQosPolicyKind::RELIABLE_RELIABILITY_QOS.
TRANSIENT_DURABILITY_QOS	RTI Data Distribution Service will attempt to keep some samples so that they can be delivered to any potential late-joining DDS::DataReader. Which particular samples are kept depends on other QoS such as DDS::HistoryQosPolicy and DDS::ResourceLimitsQosPolicy. RTI Data Distribution Service is only required to keep the data in memory and not in permanent storage. Data is not tied to the lifecycle of the DDS::DataWriter. Data will survive the DDS::DataWriter.
PERSISTENT_DURABILITY_QOS	Data is kept on permanent storage, so that they can outlive a system session.

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Function Documentation

static System::String ^ DDS::DurabilityQosPolicy::get_durability_qos_policy_name

(

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[inline, static, inherited]

Stringified human-readable name for DDS::DurabilityQosPolicy.