SPI Common Extensions Manual

Glossary
SPI Common Extensions Manual—427508-001
Glossary-9
programmatic interface
programmatic interface. A means for a program to communicate with another program.
On a NonStop Kernel system, a programmatic interface typically includes a message
format, a set of message formats, or a set of procedures (such as the SPI procedures)
to build and decode messages; definitions of message elements (commands, data
types, objects, parameters, response data, errors, and so on); rules for communication
between the requester and the server; and software to receive and respond to
messages defined for the interface.
programmed operator. A management application that performs functions that a human
operator might otherwise perform.
qualified token code. A token code that includes a subsystem ID.
requester. An SPI requester. A management application that sends SPI commands to a
subsystem server.
requester version. The software revision level of the definition files used in the compilation
of a requester. Each subsystem has its own definitions, so the requester version can
differ in requests to different subsystems.
response. The information or confirmation supplied by a subsystem in reaction to a
command. A response is typically conveyed as one or more interprocess messages
(response messages) from a subsystem to an application.
response message. An SPI message that is sent from a subsystem to an application
program in response to a command message. See SPI message and command
message.
response record. A set of response tokens, usually describing the results of performing a
command on one object. A response can consist of multiple response records spread
across one or more response messages. If a response message has multiple response
records, each response record is enclosed in a data list. See data list. Each response
record is required to contain a return token. See return token
.
response segment. A data list containing part of a segmented response record. See
segmented response
.
response token. A token returned as an element of a response. Response tokens include
information tokens (which contain response data of interest to the application), syntax
tokens (such as list tokens), one special response-control token (the context token),
the return token, and error tokens.
response-control token. A parameter token or response token that influences or reflects
how a subsystem packages its response to a command. Response-control tokens are
defined by SPI rather than by subsystems. They include the maximum-response token,
the response-type token, and the context token.