Package jline.lang.nodes

Class Place

java.lang.Object

jline.lang.Element

jline.lang.NetworkElement

jline.lang.nodes.Node

jline.lang.nodes.StatefulNode

jline.lang.nodes.ServiceNode

jline.lang.nodes.Station

jline.lang.nodes.Place

All Implemented Interfaces:

Serializable, Copyable

public class Place
extends Station
implements Serializable

A place within a stochastic Petri net / queueing Petri net model.

By default a Place is an ordinary place (tokens are immediately available to the output transitions, modelled by a ServiceTunnel pass-through server). When a service process is assigned via setService(JobClass, Distribution), the place becomes a queueing place (QPN semantics): incoming tokens are served in an embedded queue under the place's scheduling strategy and, on completion, move to a depository from which they become available to the output transitions according to the departure discipline.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected HashMap<JobClass,DepartureDiscipline>	departureDiscipline	Per-class departure discipline of the depository.
protected boolean	queueing	True once a service process has been assigned, i.e.
protected HashMap<JobClass,SchedStrategy>	schedStrategies
protected HashMap<JobClass,Distribution>	serviceProcesses	Per-class service (queue) processes of the embedded queue; empty for ordinary places.

Fields inherited from class jline.lang.nodes.Station

balkingStrategies, balkingThresholds, batchRejectProb, cap, classCap, dropRule, impatienceTypes, lcdScaling, lcdScalingPeak, lldScaling, numberOfServers, orbitImpatienceDistributions, patienceDistributions, retrialDelayDistributions, retrialMaxAttempts, switchoverTimes

Fields inherited from class jline.lang.nodes.ServiceNode

schedPolicy, schedStrategy, schedStrategyPar

Fields inherited from class jline.lang.nodes.Node

dropStrategy, input, model, nodeIndex, output, server, statefulIdx, stationIdx

Fields inherited from class jline.lang.Element

name

Constructor Summary

Constructors

Constructor	Description
Place(Network model, String name)
Place(Network model, String name, SchedStrategy schedStrategy)

Method Summary

Modifier and Type	Method	Description
DepartureDiscipline	getDepartureDiscipline(JobClass jobClass)
Distribution	getService(JobClass jobClass)
void	init()
protected void	installQueueServer()	Installs the concrete server section matching the place's scheduling strategy, replacing the default ServiceTunnel pass-through used by ordinary places.
boolean	isQueueing()
void	setClassCapacity(JobClass jobclass, int capacity)
void	setDepartureDiscipline(JobClass jobClass, DepartureDiscipline discipline)
void	setMarking(int marking)	Alias for StatefulNode.setState(int) using Petri-net terminology: sets the initial token marking of this place.
void	setMarking(Matrix marking)	Alias for StatefulNode.setState(jline.util.matrix.Matrix) using Petri-net terminology: sets the initial per-class token marking of this place.
void	setNumberOfServers(int numberOfServers)	Sets the number of servers at this station.
void	setSchedStrategy(JobClass jobClass, SchedStrategy strategy)
void	setService(JobClass jobClass, Distribution distribution)	Assigns a service process to a token color, turning this ordinary place into a queueing place.

Methods inherited from class jline.lang.nodes.Station

getBalkingStrategy, getBalkingStrategyLocal, getBalkingThresholds, getBalkingThresholdsLocal, getBatchRejectProbability, getCap, getClassCap, getDropRule, getImpatienceType, getImpatienceTypeLocal, getLimitedClassDependence, getLimitedClassDependencePeak, getLimitedLoadDependence, getMaxRetrialAttempts, getMaxRetrialAttemptsLocal, getNumberOfServers, getOrbitImpatience, getOrbitImpatienceLocal, getPatience, getPatienceLocal, getRetrialDelayDistribution, getRetrialDelayDistributionLocal, getSchedStrategy, getServiceRates, getSourceRates, getStrategyParam, getSwitchoverTime, hasBalking, hasBalkingLocal, hasFiniteCap, hasOrbitImpatience, hasPatience, hasPatienceLocal, hasRetrial, hasRetrialLocal, hasSwitchoverTime, isReferenceStation, isServiceDefined, isServiceDefined, isServiceDisabled, isServiceDisabled, removeJobClass, setBalking, setBalking, setBatchRejectProbability, setCap, setCapacity, setChainCapacity, setClassCap, setDropRule, setLimitedClassDependence, setLimitedClassDependence, setLimitedLoadDependence, setOrbitImpatience, setPatience, setPatience, setRetrial, setRetrial, setStrategyParam, setSwitchoverTime

Methods inherited from class jline.lang.nodes.ServiceNode

getSchedStrategyPar, getServiceProcess, setService

Methods inherited from class jline.lang.nodes.StatefulNode

clearState, getState, getStatefulIndex, getStatePrior, getStateSpace, resetStateSpace, setState, setState, setStatePrior, setStateSpace

Methods inherited from class jline.lang.nodes.Node

getAttribute, getDropStrategy, getInput, getModel, getNodeIndex, getOutput, getOutputStrategies, getRoutingStrategy, getSections, getServer, getStatefulIdx, getStationIdx, isStateful, printSummary, reset, resetRouting, setKChoicesRouting, setModel, setNodeIdx, setProbRouting, setRLRouting, setRouting, setRouting, setStationIdx

Methods inherited from class jline.lang.Element

getName, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface jline.lang.Copyable

copy

Field Details

schedStrategies

protected HashMap<JobClass,SchedStrategy> schedStrategies

queueing

protected boolean queueing

True once a service process has been assigned, i.e. this is a queueing place.

serviceProcesses

protected HashMap<JobClass,Distribution> serviceProcesses

Per-class service (queue) processes of the embedded queue; empty for ordinary places.

departureDiscipline

protected HashMap<JobClass,DepartureDiscipline> departureDiscipline

Per-class departure discipline of the depository.

Constructor Details

Place

public Place(Network model,
 String name)

Place

public Place(Network model,
 String name,
 SchedStrategy schedStrategy)

Method Details

init

public void init()

setClassCapacity

public void setClassCapacity(JobClass jobclass,
 int capacity)

setSchedStrategy

public void setSchedStrategy(JobClass jobClass,
 SchedStrategy strategy)

setService

public void setService(JobClass jobClass,
 Distribution distribution)

Assigns a service process to a token color, turning this ordinary place into a queueing place. The embedded queue serves tokens under the place's scheduling strategy; the first such call installs the concrete server section for that strategy.

Overrides:

setService in class ServiceNode

Parameters:

jobClass - the token color (job class)

distribution - the service-time distribution of the embedded queue for this color

installQueueServer

protected void installQueueServer()

Installs the concrete server section matching the place's scheduling strategy, replacing the default ServiceTunnel pass-through used by ordinary places.

isQueueing

public boolean isQueueing()

Returns:

true if this place is a queueing place (has an embedded queue).

getService

public Distribution getService(JobClass jobClass)

setDepartureDiscipline

public void setDepartureDiscipline(JobClass jobClass,
 DepartureDiscipline discipline)

getDepartureDiscipline

public DepartureDiscipline getDepartureDiscipline(JobClass jobClass)

setNumberOfServers

public void setNumberOfServers(int numberOfServers)

Description copied from class: Station

Sets the number of servers at this station.

Overrides:

setNumberOfServers in class Station

Parameters:

numberOfServers - the number of servers (use Integer.MAX_VALUE for infinite servers)

setMarking

public void setMarking(int marking)

Alias for StatefulNode.setState(int) using Petri-net terminology: sets the initial token marking of this place.

Parameters:

marking - initial number of tokens

setMarking

public void setMarking(Matrix marking)

Alias for StatefulNode.setState(jline.util.matrix.Matrix) using Petri-net terminology: sets the initial per-class token marking of this place.

Parameters:

marking - initial token counts per class