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and Error Handling.
2) Dialogue Control.
The tasks of Dialogue Control are:
- Format Reception.
3) Validation.
The tasks of Validation are:
- Format Validation.
f) PTP - Terminal Manager.
The Terminal Manager for paper tpe output controls stand alone PTP and teleprinters
used as PTP device.
1) Function Control.
The tasks of Function Control are:
- Table Handling
- Queue and Request Handling
- Start, Stop, and Error Handling
2) Dialogue Control.
The tasks of Dialogue Control are:
- Format Output.
3) Validation.
N/A.
g) OCR - Terminal Manager.
The Terminal Manager for document input controls the stand alone OCR.
1) Function Control.
The tasks of Function Control are:
- Transaction Handling
- Item Handling
- Table Handling
- Queue and Request Handling
- Start, Stop, an Error Handling
2) Dialogue Control.
The tasks of Dialogue Control are:
- Format Reception.
3) Validation.
The tasks of Validation are:
- Format Validation and Conversion.
h) Terminal IF Software.
The Tasks of Terminal IFsoftware are to implement
high level features for device access.
5.13.1.2.3 T̲e̲r̲m̲i̲n̲a̲l̲ ̲P̲a̲c̲k̲a̲g̲e̲ ̲B̲a̲s̲i̲c̲ ̲F̲u̲n̲c̲t̲i̲o̲n̲s̲
The TEP is broken down, as mentioned in the previous
section, into Main Functions and these are further
broken down into Basic Functios as shown on fig. 5.13.1.2.3-1.
This figure shows a grouping of the Basic Functions
based upon their relation. The selection of the functions
required for construction of the individual Terminal
Managers is described later in this section.
TheBasic Functions are:
a) Transaction Handling.
1) Interpret Command.
This function inputs and interprets the commands
from terminals and validates them against the
list of commands allowed for the particular
Terminal Manager.
Fig. 5.13.1.2.3-1…01…Terminal Package Basic Functional Breakdown
2) Create Transaction.
This function creates local work space and
data specific to the current transaction
3) Terminate Transaction.
This function frees local workspac and performs
"clean-up" when the current transaction is
finished.
4) Display Error Message.
This function converts the error codes to plain
text and displays this on the response line
on the VDU when requested.
b) Item Handling.
1) Crete New Item.
This function creates (via the Message Monitor)
a new item (message, comment etc.), in Short
Term Storage ready for storing data in.
2) Create Next Version.
This function creates (via Message Monitor)
a new version of an alrady existing item.
3) Open Item.
This function gets (via Message Monitor) access
to an existing item in Short Term Storage.
4) Close Item.
This function terminates (via Message Monitor)
access to an item.
5) Update Item.
This fnction stores data (via Message Monitor)
in an item.
6) Send Item.
This function sends (via Message Monitor) an
item to one or more queues.
