Operation definition table (ODT)

An operation definition table (ODT) defines how each operation is applied to an instance of the object class.

Operation definition table

get	user_get	attribute
add	user_add	attribute
remove	user_remove	attribute
replace	user_set	attribute
replaceWithDefault	user_set	attribute
create	user_create	object
delete	user_delete	object
action	user_action	object
filter	user_filter	attribute

column 1: operation

a keyword name for an operation. Can be one of: get, replace, replaceWithDefault, add, remove, create, delete, action, filter, list. (create, delete, and action can only be used with object type, and filter with attribute type - see column 3).

column 2: procedure

name of (Tcl) or pointer to (C/C++) a function. More than one operation can share a called procedure.

column 3: target

can be: object or attribute. Identifies what is to be acted upon by the procedure: if ``object'', the procedure will be called once, and all attributes specified on the command line must be processed; if ``attribute'', the procedure will be called once per attribute per object on the command line (this allows each attribute to be handled individually). Operations performed on object must change the object without errors or leave it unchanged; operations on attributes will be done regardless of the success of preceding or following calls.

For more information, see ``Example Operation Definition Tables (ODT)''.