Compaq OSI/APLMGR D43, OSI/FTAM D43 manual

Compaq FTAM Responder Support of	Select-Open Mappings
ISO FTAM Functions

When you issue a file-open request, you specify a contents-type parameter that provides the document type of the file and, optionally, parameter values that further define the document type. When a remote initiator sends a file-open request to the Compaq responder and specifies a contents type of unknown on the open request, the contents type returned by the responder yields the appropriate FTAM document type according to the requirements of the file system and as outlined in Table 4-7. If the file-open request indicates an FTAM document type (rather than unknown) for the contents type, the document type must generally be consistent with the mapping of Guardian file types to FTAM document types shown in Table 4-7. If the document type is not consistent with the values shown in Table 4-7, the responder returns a negative confirm that includes diagnostic message 5036, contents type inconsistent.

If the maximum-string-length parameter of the contents type is specified, the responder checks the proposed value before performing the select or open service. For the select or open to succeed, the value of the maximum-string-length parameter must fall within the range supported by the Compaq responder for that document type and string- significance value, as follows (where record length is the standard Guardian file attribute that stands for the maximum record length):

Document	String-Significance	Valid Maximum-String-Length
Type	Value	Value(s)
FTAM-1	not-significant	1 <= maximum-string-length <= 7148
FTAM-2	not-significant	maximum-string-length <= record length
FTAM-3	not-significant	1 <= maximum-string-length <= 4096
FTAM-3	fixed	maximum-string-length = record length
FTAM-3	variable	maximum-string-length <= record length

If the proposed maximum-string-length value does not fall within the defined range, the responder returns a negative confirm containing diagnostic message 5036.

In addition, the contents type is an FTAM file attribute. When a remote FTAM initiator sends a read-attribute request, the value of the contents-type attribute that the Compaq responder returns is one of the FTAM document types listed in Table 4-7.

Table 4-7. Select-Open Mappings: Compaq File Structure to FTAM Contents Type

Compaq File Structure				Contents Type
Description	File	File	FTAM	Default Parameter Values
	Type*	Code	Document
			Types

Standard edit	U	101****	FTAM-1
file
Enscribe	R	-	FTAM-2
relative file
SQL table,	R	-	FTAM-2
organization
relative

universal-class = 25 (Graphic String) maximum-string-length = 7148 string-significance = not-significant universal-class = 25 (Graphic String) maximum-string-length = record length** string-significance = not-significant universal-class = 25 (Graphic String) maximum-string-length = record length** string-significance = not significant

OSI/FTAM Responder Manual—425199-001

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