Semantics
Whereas a package is a generic mechanism for organizing model elements, a subsystem represents a behavioral unit in the physical system, and hence in the model.
Procedure for creating subsystem
In order to create subsystem,
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1.
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Click
[Toolbox] -> [Class] -> [Subsystem]
button.
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2.
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And click at the location or boundary where subsystem will be placed in the
[main window]
.
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3.
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Then a subsystem is created on the class diagram and subsystem quick dialog is opened. At the quick dialog, enter the subsystem name.
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4.
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And press
[Enter]
key to have done this procedure.
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Procedure for creating providing interface of subsystem.
In order to providing inteface of subsystem,
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1.
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Create interface and susbystem.
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2.
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Click
[Toolbox] -> [Realization]
button.
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3.
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Drag from subsystem and drop to interface.
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4.
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Between interface and subsystem, providing interface relationship is created finally.
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In order to create interface and realization at once,
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1.
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Double-click subsystem and subsystem quick dialog is opened.
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2.
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Enter text in the quick dialog as following
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3.
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Press
[Enter]
key and interface provided by subsystem is created .
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Procedure for creating requiring interface
In order to create requiring interface, use shortcut creation syntax.
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1.
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Double-click subsystem. At the quick dialog, enter text as follows.
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2.
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Then subsystem connects to interface as requiring relationship.
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Procedure for adding operation to subsystem
Subsystem can have operation. In order to add operation to subsystem,
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1.
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Select
[Collection Editor...]
popup menu.
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2.
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At the
[collection editor]
, add operation on the
[operations]
tab.
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3.
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Or click
button at the quick dialog of subsystem.
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4.
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Then a new operation is created.
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