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manual abstract
Introduction to NCL
Operations Available Through NCL
Communicating With
An NCL process can act as a PATHSEND requester to communicate with existing
Pathway Server Classes
Pathway server classes. It can send a request message to the server class and receive a
reply message from the server class.
A server process typically controls access to a database. A requester process typically
makes requests of a server process: for example, to add, update, or delete records in a
database. Using an NCL process to act as a PATHSEND requester, in addition to an
existing requester written in another language, offers you increased flexibility in
communicating with a server process. You can use either or both requesters to
communicate with the same server process.
Being able to gain access to an existing database from NonStop NET/MASTER MS
through an existing server process also means that you can do more while preserving
your original investment in developing the server program. The NonStop
NET/MASTER NCL Programmer's Guide contains more information about Pathway
server classes.
Creating Customized
You execute NonStop NET/MASTER MS commands by typing them in at the OCS
NonStop NET/MASTER MS
command input line. After writing an NCL procedure, you can usually execute it by
Commands
simply typing its name in the OCS command input line. This is how you can use NCL
to create customized commands.
Displaying Panels
A panel is a formatted screen display that overlays an entire screen window. NCL
processes display panels by using panel description files. A panel description file is an
edit file used by an NCL process to display a panel. It contains the text to display on a
screen and the panel control statements that determine how to display the text.
Panels present information to users and can accept input from users. Input can be
passed back to an NCL process for analysis and further processing.
Examples of panel description files distributed with NonStop NET/MASTER MS are
the NonStop NET/MASTER MS primary menu, User ID Management Services menus,
Edit Services screens, and all help displays.
Executing NonStop
You can execute most NonStop NET/MASTER MS commands from an NCL
NET/MASTER MS
procedure. This includes timer commands, informational commands, commands used
Commands
with remote systems, and commands used with function keys and terminals.
An NCL process can execute a NonStop NET/MASTER MS command in two ways.
The NCL process can execute the command so that it does not receive the results of the
command. In this case, the results are passed to the owner of the NCL process.
Alternatively, the NCL process can execute the command so that it does receive the
results of the command. In this case, it can read and analyze the results and take
further action based on the results.
Commands, operands, and users have an authority level. For security, if you want to
enter a command or operand from an NCL process that you execute, you must have
an authority level that is equal to or greater than the authority level of the command or
operand.
106126 Tandem Computers Incorporated
1–5
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Desktops - HP Integrity NonStop J-Series (555.88 kb)
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