Package eu.kartoffelquadrat.bookstoreinternals

Class GlobalStockImpl

java.lang.Object

eu.kartoffelquadrat.bookstoreinternals.GlobalStockImpl

All Implemented Interfaces:

GlobalStock

public class GlobalStockImpl
extends Object
implements GlobalStock

Implementation for the GlobalStock interface.

Author:

Maximilian Schiedermeier

Method Summary

Modifier and Type	Method	Description
Map<Long,Integer>	getEntireStoreStock(String city)	Returns the entire stock of a local store.
static GlobalStock	getInstance()	Singleton access method.
int	getStock(String city, Long isbn)	Returns the amount in stock of a given book in a given city.
Collection<String>	getStoreLocations()	Returns a list of all cities that have a local stock.
void	setStock(String city, Long isbn, Integer amount)	Updates the stock for a given city.
String	toString()	Helper method to convert all stored stock information into human readable format.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getInstance

public static GlobalStock getInstance()

Singleton access method.

Returns:

the singleton instance.

getStock

public int getStock(String city,
                    Long isbn)

Returns the amount in stock of a given book in a given city.

Specified by:

getStock in interface GlobalStock

Parameters:

city - for the city of interest

isbn - for book id of interest

Returns:

the amount in stock

setStock

public void setStock(String city,
                     Long isbn,
                     Integer amount)

Updates the stock for a given city.

Specified by:

setStock in interface GlobalStock

Parameters:

city - for the city of interest

isbn - for book id of interest

amount - for the new amount in stock

getStoreLocations

public Collection<String> getStoreLocations()

Returns a list of all cities that have a local stock.

Specified by:

getStoreLocations in interface GlobalStock

Returns:

a list of all cities (strings)

getEntireStoreStock

public Map<Long,Integer> getEntireStoreStock(String city)

Returns the entire stock of a local store.

Specified by:

getEntireStoreStock in interface GlobalStock

Parameters:

city - for the city of interest

Returns:

a map holding for each book the amount of books in stock at the specified location.

toString

public String toString()

Helper method to convert all stored stock information into human readable format.

Overrides:

toString in class Object

Returns:

A nicely formatted string listing all local stocks.