FTAM/9000 Programmer's Guide

444 Chapter 11
Document Types and Constraint Sets
Constraint Sets
Unstructured Constraint Set
The unstructured constraint set applies to files that you can transfer or
access in whole, or extend; partial access is not available.
Refer to the following list for applicable basic constraints.
Constraint Set Name Unstructured
Constraint Set Identifier ISO Standard 8571 constraint-set (4) unstructured (1)
(ASN.1 syntax for an identifier)
Node Names None
Available File Access
Actions
FT_FA_ERASE
FT_FA_EXTEND
FT_FA_READ
FT_FA_REPLACE
Qualified Actions None
Available Access Contexts FT_UNSTRUCTURED_ALL_DATA_UNITS (UA)
Creation State Root node with an empty data unit
Location After Open FT_FIRST
Beginning of File Not applicable
End of File Not applicable
Read Whole File Read in access context UA with a FADU identity of
FT_FIRST
Write Whole File Transfer a single data unit (without a node descriptor) with
a FADU identity of FT_FIRST and an FT_FA_REPLACE file
access action