IEEE
HIGH LEVEL ARCHITECTURE (HLA)—OBJECT MODEL TEMPLATE (OMT) SPECIFICATION Std 1516.2-2000
Copyright © 2001 IEEE. All rights reserved.
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3.1.75 reflected instance attribute: An instance attribute that is represented but not explicitly modeled in a
joined federate. The reflecting joined federate accepts new values of the reflected instance attribute as they
are produced by some other federation member and provided to it by the runtime infrastructure (RTI), via
the Reflect Attribute Values † service.
3.1.76 region: A generic term that refers to either a region specification or a region realization. If not using
Data Distribution Management (DDM), region arguments may be ignored.
NOTE—See 9.1 of IEEE Std 1516.1-2000.
3.1.77 region realization: A region specification (set of ranges) that is associated with an instance attribute
for update, with a sent interaction, or with a class attribute or interaction class for subscription. Region
realizations are created from region specifications via the Commit Region Modifications (only when
modifying a region specification from which region realizations are already derived), Register Object
Instance With Regions, Associate Regions for Updates, Subscribe Object Class Attributes With Regions,
Subscribe Interaction Class With Regions, Send Interaction With Regions, or Request Attribute Value
Update With Regions services.
NOTE—See 9.1.1 of IEEE Std 1516.1-2000.
3.1.78 region specification: A set of ranges. Region specifications are created using the Create Region
service, and a runtime infrastructure (RTI) is notified of changes to a region specification using the Commit
Region Modifications service.
NOTE—See 9.1.1 of IEEE Std 1516.1-2000.
3.1.79 register: To invoke the Register Object Instance or the Register Object Instance With Regions service
to create a unique object instance designator.
NOTE—See 6.4 of IEEE Std 1516.1-2000.
3.1.80 registered class: The object class that was an argument to the Register Object Instance or the
Register Object Instance With Regions service invocation that resulted in the creation of the object instance
designator for a given object instance.
3.1.81 resolution: The smallest resolvable value separating attribute or parameter values that can be
discriminated. Resolution may vary with magnitude for certain data types.
3.1.82 retraction: An action performed by a federate to unschedule a previously scheduled message.
Message retraction may be visible to the federate to whom the scheduled message was to be delivered.
Retraction is widely used in classic event-oriented discrete event simulations to model behaviors such as
preemption and interrupts.
3.1.83 runtime infrastructure (RTI) initialization data (RID): RTI vendor-specific information needed to
run an RTI. If required, an RID is supplied when an RTI is initialized.
3.1.84 runtime infrastructure (RTI): The software that provides common interface services during a High
Level Architecture (HLA) federation execution for synchronization and data exchange.
3.1.85 sent class: The interaction class that was an argument to the Send Interaction or Send Interaction
With Regions service invocation that initiated the sending of a given interaction.
NOTE—See 5.1.3 of IEEE Std 1516.1-2000.
3.1.86 sent interaction: A specific interaction that is transmitted by a joined federate via the Send
Interaction or Send Interaction With Regions service and received by other joined federates in the federation
execution via the Receive Interaction † service.
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