Compaq FTAM Responder Support of
ISO FTAM Functions
OSI/FTAM Responder Manual— 425199-001
4 -7
Select-Open Mappings
∗
The following values are possible for file type:
U = Enscribe unstructured
R = Enscribe relative
E = Enscribe entry-sequenced
∗∗
This is the standard Guardian file attribute that stands for the maximum record length.
∗∗∗
The maximum-string-length parameter must be specified.
∗∗∗∗
Line numbers are not preserved. If the value specified for the max-extents attribute is exceeded, max-extents
is automatically increased (in increments, up to the system limit) and the lines renumbered.
The maximum number of lines allowed for file type 101 is 10,000,000. For more information, see the
Guardian
Procedure Calls Reference Manual.
Select-Open Mappings
Table 4-7 shows the FTAM document types that correspond to each Compaq file type
that can be selected, opened, and read. This table indicates the default parameter values
for the document types that Compaq supports, whereas Table 4-5, earlier in this section,
indicates the full range of parameter values for these document types.
Table 4-6. Create Mappings: FTAM Contents Type to Compaq File Structure
Contents Type
Compaq File Structure
FTAM
Document
Types
Default Parameter Values
Description
File
Type*
File
Code
Record
Length**
FTAM-1
universal-class = 25 (Graphic String)
maximum-string-length = none***
string-significance = not-significant
Standard edit
file
U
101****
Not
applicable
FTAM-2
universal-class = 25 (GraphicString)
maximum-string-length = none***
string-significance = not-significant
Enscribe
relative file
R
0
maximum-
string-
length
FTAM-3
maximum-string-length = none***
string-significance = fixed
Enscribe
entry-
sequenced file
E
891
maximum-
string-
length
maximum-string-length = none***
string-significance = variable
Enscribe
entry-
sequences file
E
892
maximum-
string-
length
maximum-string-length = none***
string-significance = not-significant
(defaults to not-significant if omitted)
Enscribe
unstructured
file
U
0
Not
applicable
Note.
If a DEFINE by the name of _ZOSF_FIXED_AS_UNSTRUCT exists when the FTAM
processes are started, and the string-significance parameter is set to FIXED in the request, the
file created or selected will be an unstructured file with maximum-string-length of 4096 bytes.
Note.
Though a default value for each parameter is proposed, if there are any user-defined
default values available for particular combinations on a file type and file code, then that will
override the system-defined default parameter values.
