RTI Connext Java API
Version 6.0.0
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Kinds of history. More...
Static Public Attributes | |
static final HistoryQosPolicyKind | KEEP_LAST_HISTORY_QOS |
[default] Keep the last depth samples. | |
static final HistoryQosPolicyKind | KEEP_ALL_HISTORY_QOS |
Keep all the samples. | |
Additional Inherited Members | |
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final int | ordinal () |
The integral value of this enumerated constant. | |
Object | copy_from (Object src) |
final String | name () |
The name of this enum constant, as declared in the enum declaration. | |
final String | toString () |
The string value of this enum constant. | |
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Enum (String name, int ordinal) | |
The constructor. | |
final Object | clone () throws CloneNotSupportedException |
Kinds of history.
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static |
[default] Keep the last depth
samples.
On the publishing side, RTI Connext will only attempt to keep the most recent depth
samples of each instance of data (identified by its key) managed by the com.rti.dds.publication.DataWriter. Invalid samples represeting a disposal or unregistration of an instance do not count towards the history depth.
On the subscribing side, the com.rti.dds.subscription.DataReader will only attempt to keep the most recent depth
samples received for each instance (identified by its key) until the application takes them via the com.rti.dds.subscription.DataReader 's take() operation.
Invalid samples represeting a dispoasal or unregistration of an instance do count towards the history depth and may therefore replace a value of the instance currently being stored in the reader queue.
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static |
Keep all the samples.
On the publishing side, RTI Connext will attempt to keep all samples (representing each value written) of each instance of data (identified by its key) managed by the com.rti.dds.publication.DataWriter until they can be delivered to all subscribers.
On the subscribing side, RTI Connext will attempt to keep all samples of each instance of data (identified by its key) managed by the com.rti.dds.subscription.DataReader. These samples are kept until the application takes them from RTI Connext via the take() operation.