Package jasima.shopSim.core

Class PR

java.lang.Object

jasima.shopSim.core.PR

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

ATC, ATCS, BFASFS, CR, CR.Variant1, CR.Variant2, DK, ECR, EDD, FASFS, FCFS, FCR, FEDD, FFCFS, GPRuleBase, IFTMinusUIT, Inverse, LBF, LookaheadThreshold, LW, MaxBatchSize, MDD, MMS, MOD, ODD, PTPlusWINQ, PTPlusWINQPlusNPT, PTPlusWINQPlusSlack, RND, SetupAvoidance, SI, SimplePR, SLK, SNSPT, SPT, SRPT, SRPTPerPT, SRPTPerSLK, SSPT, SST, TieBreakerFASFS, WINQ, WMDD, WMOD, WSPT, XWINQ

public abstract class PR
extends Object
implements Cloneable, Serializable

Abstract base class for a priority rule to be used to sequence items in a PriorityQueue.

Author:

Torsten Hildebrandt

See Also:

PriorityQueue, Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static double	MAX_PRIO
static double	MIN_PRIO

Constructor Summary

Constructors

Constructor	Description
PR()

Method Summary

Modifier and Type	Method	Description
boolean	arrivesTooLate(PrioRuleTarget j)
void	beforeCalc(PriorityQueue<? extends PrioRuleTarget> q)	This method is called by a queue before evaluating it's elements.
abstract double	calcPrio(PrioRuleTarget entry)	Returns the priority value of entry.
PR	clone()
String	getName()
WorkStation	getOwner()
PR	getTieBreaker()
void	init()	This method is called upon start of a simulation to perform any initializations required.
boolean	keepIdle()	If this method returns true, the machine is kept idle.
PR	primaryRule()	If this rule is used as a tie-breaker for another rule, PrimaryRule points to the rule this rule is the tieBreaker for, i.e.
PR	setFinalTieBreaker(PR tieBreaker)	Convenience method to set the last tie breaker rule in a chain.
PR	setOwner(WorkStation o)
void	setTieBreaker(PR tieBreaker)	Sets the tie breaker rule to use.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

MIN_PRIO

public static final double MIN_PRIO

See Also:

Constant Field Values

MAX_PRIO

public static final double MAX_PRIO

See Also:

Constant Field Values

Constructor Detail

PR

public PR()

Method Detail

init

public void init()

This method is called upon start of a simulation to perform any initializations required.

beforeCalc

public void beforeCalc(PriorityQueue<? extends PrioRuleTarget> q)

This method is called by a queue before evaluating it's elements. Use it to do some initialization prior to calcPrio().

Parameters:

q - The current queue.

calcPrio

public abstract double calcPrio(PrioRuleTarget entry)

Returns the priority value of entry. This method has to be overwritten by a priority rule.

keepIdle

public boolean keepIdle()

If this method returns true, the machine is kept idle. This method is called after beforeCalc(PriorityQueue) but before calcPrio(PrioRuleTarget).

toString

public final String toString()

Overrides:

toString in class Object

getName

public String getName()

clone

public PR clone()

Overrides:

clone in class Object

getOwner

public WorkStation getOwner()

setOwner

public PR setOwner(WorkStation o)

setTieBreaker

public void setTieBreaker(PR tieBreaker)

Sets the tie breaker rule to use.

Parameters:

tieBreaker - The tie-breaker to use.

setFinalTieBreaker

public PR setFinalTieBreaker(PR tieBreaker)

Convenience method to set the last tie breaker rule in a chain. The chain of rules is traversed until a rule without a tie breaker is found. The tie breaker of this rule is set to tieBreaker.

Parameters:

tieBreaker - The tie-breaker to use.

Returns:

The main rule, i.e., this.

See Also:

setTieBreaker(PR)

getTieBreaker

public PR getTieBreaker()

primaryRule

public PR primaryRule()

If this rule is used as a tie-breaker for another rule, PrimaryRule points to the rule this rule is the tieBreaker for, i.e. this.primaryRule().getTieBreaker()==this.

arrivesTooLate

public boolean arrivesTooLate(PrioRuleTarget j)