ca.roumani.i2c

Class AbstractFoods

java.lang.Object

ca.roumani.i2c.AbstractFoods

All Implemented Interfaces:

java.io.Serializable

public class AbstractFoods
extends java.lang.Object
implements java.io.Serializable

This class encapsulates the inventory and sales business of the Abstract Foods Company. It maintains three collections:

• Inventory: A Map with the item number as key (a String) and the Item object as value.
• Contacts: A Map with the contact number as key (a String) and the Contact object as value.
• Journal: A List of Trx instances each representing a posted sales transaction.

All three collections do not use generics, i.e. their elements are of type Object.

Version:

0.1

Author:

H. Roumani, prof@roumani.ca

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AbstractFoods() Construct a company having empty collections.
AbstractFoods(java.util.Map<java.lang.String,Item> inventory, java.util.Map<java.lang.String,Contact> contacts, java.util.List<Trx> journal) Construct a company having the passed collections.

Method Summary

Modifier and Type	Method and Description
java.util.Map<java.lang.String,Contact>	getContacts() Determine the contacts map of this company
java.util.Map<java.lang.String,Item>	getInventory() Determine the inventory map of this company
java.util.List<Trx>	getJournal() Determine the transaction list of this company
static AbstractFoods	getRandom() Create a randomly chosen Abstract Foods Company.
java.lang.String	toString() Construct a string representation of this company.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractFoods

public AbstractFoods()

Construct a company having empty collections.

AbstractFoods

public AbstractFoods(java.util.Map<java.lang.String,Item> inventory,
                     java.util.Map<java.lang.String,Contact> contacts,
                     java.util.List<Trx> journal)

Construct a company having the passed collections.

Parameters:

inventory - the inventory map

contacts - the contacts map

journal - the transaction list

Method Detail

getInventory

public java.util.Map<java.lang.String,Item> getInventory()

Determine the inventory map of this company

Returns:

the inventory map

getContacts

public java.util.Map<java.lang.String,Contact> getContacts()

Determine the contacts map of this company

Returns:

the contacts map

getJournal

public java.util.List<Trx> getJournal()

Determine the transaction list of this company

Returns:

the transaction list

toString

public java.lang.String toString()

Construct a string representation of this company.

Overrides:

toString in class java.lang.Object

Returns:

the string: "Abstract Foods Company".

getRandom

public static AbstractFoods getRandom()

Create a randomly chosen Abstract Foods Company. The inventory map consists of about 100 (item number, Item) mappings of which about 25% are for Fresh items. The numbers, names, and prices are randomly chosen but the numbers are 8-character each. The contacts map consists of about 100 (contact number, Contact) mappings of which 50% are Client and 50% are Supplier instances. The numbers, names, ratings (for clients), and catalogues (for suppliers) are randomly chosen but the numbers are formatted as 5-digit each. The journal list consists of about 750 posted Trx transactions spanning approximately 4 months (with the latest occurring in the past 48 hours).

In order to facilitate the testing of front-ends and reports that are based on this randomly-chosen company, it is persisted (serialized) by storing the returned instance on disk in the file data.af.

This method was added for pedagogical reasons.

Returns:

a company with randomly chosen collections.