logist.task
Class Task

java.lang.Object
  logist.task.Task

public final class Task
extends java.lang.Object

A task represents the unit of work in the pick up and delivery problem.

Tasks are created in batches at the beginning of each round according to a TaskDistribution.

Author:

Robin Steiger

Field Summary

Topology.City	deliveryCity The delivery location
int	id A unique id of the task in the current round, in the range [0,numTasks).
Topology.City	pickupCity The pickup location
long	reward The reward for this task
int	weight The weight of this task

Constructor Summary

Task(int id, Topology.City source, Topology.City destination, long reward, int weight)
For system use only.

Method Summary

java.util.List<Topology.City>	path() The cities on the shortest path from the source of this task (excluding) to the destination (including).
double	pathLength() The length of the shortest path from the source of this task to the destination.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

id

public final int id

A unique id of the task in the current round, in the range [0,numTasks).

pickupCity

public final Topology.City pickupCity

The pickup location

deliveryCity

public final Topology.City deliveryCity

The delivery location

reward

public final long reward

The reward for this task

weight

public final int weight

The weight of this task

Constructor Detail

Task

public Task(int id,
            Topology.City source,
            Topology.City destination,
            long reward,
            int weight)

For system use only. Creates a new task.

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

path

public java.util.List<Topology.City> path()

The cities on the shortest path from the source of this task (excluding) to the destination (including).

Returns:

The cities on the shortest path to deliver this task.

pathLength

public double pathLength()

The length of the shortest path from the source of this task to the destination.