TRANSFER Programming Manual

External Objects
TRANSFER Objects
3–8 40970 Tandem Computers Incorporated
OUTLOG folder—The OUTLOG behaves like any other folder, except that, like the
other special folders, you cannot delete it. You can file any item in the OUTLOG.
Tandem PS MAIL clients automatically save posted items in the OUTLOG, so that
correspondents still have access to items after sending them. Items are
automatically removed from the OUTLOG folder when the folder's item-retention
time has elapsed. The default item retention time for the OUTLOG folder is one
day.
Note You can configure special folder names based upon the languages used at the sites. Refer to Section 7,
“National Language and Character Set Support,” for additional information.
External Objects Correspondents, items, packages, folders, depots, profiles, and distribution lists are
defined in the TRANSFER database. All objects in the TRANSFER database are
known as TRANSFER (or internal) objects. Just as TRANSFER applications reference
and use the data stored in these objects, they can also access and operate on data
contained in certain objects external to the TRANSFER database. These external
objects are GUARDIAN 90 operating system files.
Use of external objects saves disk space on the system. For example, to transmit data
from a file, your TRANSFER application need not copy that file into the TRANSFER
database but can specify the file as an external object. The TRANSFER delivery system
references it by simply pointing to it. Furthermore, if your TRANSFER application
uses data that you wish to make available to other applications or users, you can store
the data in an external object so that other applications can access the data without
unloading it from the TRANSFER database.
Another benefit of using external objects is that you can access them and use them
even when the TRANSFER system is not running. An external object can be either of
the following:
A primary external object that contains item data that is transportable to other
nodes. This data could relate to data stored in the TRANSFER database for an
item. Alternatively, it could be the sole data used by such an item. Your
application attaches this object to the item, creating what is called a primary
attachment. When the item is transported in a package through the network, its
primary external objects move along with it.