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Designing SCOadmin object service agents

About execution procedures

There are a total of ten operations possible on objects. For each operation that is valid for an object class, the OSA handling that class must provide an execution procedure to carry out the operation. Eight of these operations are available through the object API. The first five were introduced above, since they operate on attributes:

Three others operate on an entire object:

create
create a new object of the class

delete
delete an object

action
perform a class-specific action. For example, an action available for floppy disks is the "format" action.
Two operations are called internally by the framework:

filter
filter a list of objects based on the values of their attributes

list
make a list of objects that are contained by another object (containment is described in the next section)

The decisions that need to be made with respect to object operations are as follows:


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