CISC 323 Intro to Software Engineering

• M o ti v a ti o n
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Adapter Design Pattern
[Gamma et al., pp 139-150]
– S o m e t i m e s a c l a s s i m p l e m e n t s f u n c t i o n a l i t y s i m i l a r
t o w h a t a n a p p l i c a t i o n r e q u i r e s , b u t n o t t h e
c o r r e c t i n t e r f a c e f o r t h a t a p p l i c a t i o n
– E . g . W e w i s h t o i m p l e m e n t a B o o k L i s t c l a s s
i m p l e m e n t i n g a l i s t o f t e x t b o o k u s e d i n a c o u r s e
int getNumBooks()
Book getBook (int n)
void addBook (Book newBook)
– T h e s e o p e r a t i o n s a r e v e r y s i m i l a r t o t h e
o p e r a t i o n s i n t h e p r e d e f i n e d V e c t o r c l a s s
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