Application procedures
For each valid operation that a object class can perform on an
object instance, the OSA writer must provide some procedure to apply that
operation. There are three types of application procedures (or operation
execution procedures); per attribute, per object and
action. Whenever any of these procedures are called, they are all
passed an identically formatted data structure. Each type of execution
procedure will only be concerned with select portions of the data structure
passed to them. This is implemented in this manner so as to
facilitate OSA
writers who wish to combine execution procedures that might be similar but of
different synchronization. For instance, an OSA
writer may wish to combine the
create and replaceWithDefault functions, or the
filter and get functions. Then the execution procedure
would just have to identify what it is being asked to do exactly by looking in
the data structure passed to it, and ignore the portions of the data structure
that are irrelevant to its operation.
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Defining execution procedures
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UnixWare 7 Release 7.1.4 - 27 April 2004