javaDocedRefactoringExample.states

Class MovieState

java.lang.Object

javaDocedRefactoringExample.states.MovieState

Direct Known Subclasses:

ChildrensMovieState, NewReleaseMovieState, RegularMovieState

public abstract class MovieState
extends java.lang.Object

The generalized movie state. A generalization of the ChildrensMovieState, NewReleaseMovieState, and the RegularMovieState.

 Domain:
         None
 Invariant
         None
 

Author:

Scott Woodfield

Constructor Summary

Constructors

Constructor and Description
MovieState()

Method Summary

Methods

Modifier and Type	Method and Description
float	getAmountDue(int numberOfDaysRented) Gets the amount due for a given state.
int	getFrequentRenterPoints(int numberOfDaysRented) Get the frequent renter points for this movie according to the number of days it was rented.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MovieState

public MovieState()

Method Detail

getAmountDue

public float getAmountDue(int numberOfDaysRented)

Gets the amount due for a given state. A template method pattern.

Parameters:

numberOfDaysRented -

Pre-condition:

numberOfDaysRented ≥ 0

Post-condition:

numberOfDaysRented ≤ getBaseRateThreshold() ⇒ result = getBaseRate()
ELSE
result = getBaseRate() + (numberOfDaysRented - getBaseRateThreshold()) * getExtraTimeRate()

getFrequentRenterPoints

public int getFrequentRenterPoints(int numberOfDaysRented)

Get the frequent renter points for this movie according to the number of days it was rented.

Parameters:

numberOfDaysRented - the number of days this movie was rented

Pre-condition:

numberOfDaysRented ≥ 0

Post-condition:

this instanceof NewReleasedMovieState AND numberOfDaysRented > 1 ⇒ result = 2
ELSE
result = 1