Operations (OOM)

An operation is a named specification of a service that can be requested from any object of a class to affect behavior. It is a specification of a query that an object may be called to execute.

An operation can be created for a class or interface in the following diagrams:

A class may have any number of operations or no operations at all.

In the following example, the class Car, has 3 operations: start engine, brake, and accelerate.

Operations have a name and a list of parameters. Several operations can have the same name within the same class if their parameters are different.

For more information on EJB operations, see Defining Operations for EJBs.

• Creating an Operation
  You can create an operation from the property sheet of, or in the Browser under, a class or interface.
• Operation Properties
  To view or edit an operation's properties, double-click its diagram symbol or Browser or list entry. The property sheet tabs and fields listed here are those available by default, before any customization of the interface by you or an administrator.
• Parameters (OOM)
  A parameter is a variable that can be changed, passed, or returned.To view or edit a parameter's properties, select it on the Parameters tab of an operation or event and click the Properties tool.