jamel.markets
Class AbstractOffer

java.lang.Object
  jamel.markets.AbstractOffer

All Implemented Interfaces:

java.lang.Comparable<AbstractOffer>

Direct Known Subclasses:

GoodsOffer, JobOffer

public abstract class AbstractOffer
extends java.lang.Object
implements java.lang.Comparable<AbstractOffer>

A base class for offers on markets.

Encapsulates a volume offered and a unit price.

Last update: 8-Dec-2010.

Field Summary

private Offerer	author The agent author of the offer.
private double	price The unit price.
private int	volume The offered volume.

Constructor Summary

protected

AbstractOffer(Offerer offerer, int volume, double price) Creates a new offer.

Method Summary

void	clear()
protected Offerer	getOfferer() Returns the agent author of the offer.
protected double	getPrice() Returns the unit price.
int	getVolume() Returns the offered volume.
void	subtract(double volume) Subtract a volume to the offered volume.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Field Detail

author

private Offerer author

The agent author of the offer.

price

private final double price

The unit price.

volume

private int volume

The offered volume.

Constructor Detail

AbstractOffer

protected AbstractOffer(Offerer offerer,
                        int volume,
                        double price)

Creates a new offer.

Parameters:

offerer - the agent author of the offer.

volume - the offered volume.

price - the unit price of the offer.

Method Detail

clear

public void clear()

getOfferer

protected Offerer getOfferer()

Returns the agent author of the offer.

Returns:

the offerer.

getPrice

protected double getPrice()

Returns the unit price.

Returns:

a double that represents the unit price.

getVolume

public int getVolume()

Returns the offered volume.

Returns:

a double that represents the volume.

subtract

public void subtract(double volume)

Subtract a volume to the offered volume.

Parameters:

volume - the volume to subtract.