CBSE notes

NOTES ON COMPONENT-BASE SOFTWARE ENGINEERING

SOFTWARE COMPONENT is

A CONTAINER with:

Hidden inner
Public outer interface
Stating all dependencies explicitly

Component-Based System

follows divide-and-conquer feature:

a major relationship between the components should be tree-shaped or reducible (hierarchically organized)
entire system can be reduced to one abstract node

2 Types of component models

BLACKBOX: modular decomposition
GRAYBOX : Separation of concerns

The component system:

the technique to produce a component-based system

Component Model (description of components)
Composition Technique (composition of components)
Composition Language

System	Language	Bsp.
Software Composition Systems	Composition Language	Invasive Composistion. Piccola Bloo
Aspect Systems	Aspect Separation Crosscutting	Aspect/JAOM
View Systems	Composition Operators	Composition Filters. Hyperspaces
Architecture Systems	Architecture as Aspect Connectors	EAST-ADL. Web Services
Classical Component Systems	Standard Components Reflection	.NET CORBA EJB ROS Android
Object-Oriented Systems	object as Run-Time Components	C++ JAVA UML components
Modular Systems	Modules as Compile-Time Components	Shell scripts,Pascal, C

BLACK-BOX COMPOSITION BBC :)

BBC fully hides what’s inside Components + Connectors + Composition Recipe = Component-based System

GRAY-BOX COMPOSITION

Separation of concerns

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