GlobalStock (bookstoreinternals 1.5 API)

All Known Implementing Classes:

GlobalStockImpl
```
public interface GlobalStock
```
Represents the stock levels of all local store branches.

Author:

Maximilian Schiedermeier

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Map<Long,Integer>`	`getEntireStoreStock(String city)`	Returns the entire stock of a local store.
`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.

- Method Detail
  - getStock
```
int getStock(String city,
             Long isbn)
```
    Returns the amount in stock of a given book in a given city.
    
    Parameters:
    
    city - for the city of interest
    
    isbn - for book id of interest
    
    Returns:
    
    the amount in stock
  - setStock
```
void setStock(String city,
              Long isbn,
              Integer amount)
```
    Updates the stock for a given city.
    
    Parameters:
    
    city - for the city of interest
    
    isbn - for book id of interest
    
    amount - for the new amount in stock
  - getStoreLocations
```
Collection<String> getStoreLocations()
```
    Returns a list of all cities that have a local stock.
    
    Returns:
    
    a list of all cities (strings)
  - getEntireStoreStock
```
Map<Long,Integer> getEntireStoreStock(String city)
```
    Returns the entire stock of a local store.
    
    Parameters:
    
    city - for the city of interest
    
    Returns:
    
    a map holding for each book the amount of books in stock at the specified location.