LSTRLOB parameter: Difference between revisions

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==Description==
==Description==
When <var>LSTRLOB</var> is 1, [[SOUL]] programs can use normal field reference syntax to retrieve or set the value of a Lob field.  Otherwise (LSTRLOB=0), access to Lob fields must use the <var>Buffer</var> syntax. <var>LSTRLOB</var> is generally available as of Model 204 V7.5.
When <var>LSTRLOB</var> is 1, [[SOUL]] programs can use normal field reference syntax to retrieve or set the value of a Lob field.  Otherwise (<code>LSTRLOB=0</code>), access to Lob fields must use the <var>Buffer</var> syntax. <var>LSTRLOB</var> is generally available as of Model&nbsp;204 V7.5.


The default value of <var>LSTRLOB</var> is 1.
The default value of <var>LSTRLOB</var> is 1.

Latest revision as of 19:52, 20 July 2018

Treat LOBs as Longstrings

Summary

Default value
1
Parameter type
System
Where set
System manager
Related products
All
Introduced
Sirius Mods Version 7.7

Description

When LSTRLOB is 1, SOUL programs can use normal field reference syntax to retrieve or set the value of a Lob field. Otherwise (LSTRLOB=0), access to Lob fields must use the Buffer syntax. LSTRLOB is generally available as of Model 204 V7.5.

The default value of LSTRLOB is 1.

The "normal field reference syntax" applies to all uses of a BLOB or CLOB field name except for the Note statement.

The types of allowed "normal field references" are shown in the following table, which assumes that field LOB has the BLOB or CLOB attribute:

Type of referenceExamples
Used in expression

%s = LOB %t = LOB:substring(%pos, %len) %xmNode:addElement('info', LOB)

Print statement

print 'Value is:' and LOB

Field updates

%s1 = 'x':left(3000, pad='x')
store record
LOB = %s1
end store

add LOB = %s2

Note: The normal field reference syntax in the Store Record and Add statements does not have a provision for the Reserve clause which is available on the Buffer syntax. This is not an issue for a FILEORG X'100' file, because the Reserve clause is ignored in those files (Lob pages are chained rather than allocated contiguously).

change LOB to %s3

Note: The only type of Change statement allowed for a field with the MINLOBE attribute is this form, using the normal field reference syntax.