Package org.btrplace.scheduler.choco.view

Class CPowerView

java.lang.Object

org.btrplace.scheduler.choco.view.CPowerView

All Implemented Interfaces:

Injectable, MisplacedVMsEstimator, ChocoView

public class CPowerView
extends Object
implements ChocoView

A solver-side view to store variables that indicate the moment a node is powered on or off.

User: Tu Huynh Dang Date: 6/4/13 Time: 9:17 PM

Field Summary

Fields

Modifier and Type	Field	Description
static String	VIEW_ID	The view identifier.

Constructor Summary

Constructors

Constructor	Description
CPowerView()

Method Summary

Modifier and Type	Method	Description
boolean	beforeSolve(ReconfigurationProblem rp)	An event that is send to indicate a RP will be solved.
String	getIdentifier()	Get the view unique identifier.
org.chocosolver.solver.variables.IntVar	getPowerEnd(int idx)	Get the moment a given node is off.
org.chocosolver.solver.variables.IntVar	getPowerStart(int idx)	Get the moment a given node is on.
boolean	inject(Parameters ps, ReconfigurationProblem rp)	Inject the constraint into the problem.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.btrplace.scheduler.choco.view.ChocoView

cloneVM, getDependencies, getMisPlacedVMs, insertActions

Field Details

VIEW_ID

public static final String VIEW_ID

The view identifier.

See Also:

Constant Field Values

Constructor Details

CPowerView

public CPowerView()

Method Details

inject

public boolean inject(Parameters ps, ReconfigurationProblem rp) throws SchedulerException

Description copied from interface: Injectable

Inject the constraint into the problem.

Specified by:

inject in interface Injectable

Parameters:

ps - the scheduler parameters

rp - the problem

Returns:

true if the injection succeeded, false if the problem is sure to not have a solution

Throws:

SchedulerException - if an error occurred while injecting.

getPowerStart

public org.chocosolver.solver.variables.IntVar getPowerStart(int idx)

Get the moment a given node is on.

Parameters:

idx - the node index

Returns:

the variable denoting the moment

getPowerEnd

public org.chocosolver.solver.variables.IntVar getPowerEnd(int idx)

Get the moment a given node is off.

Parameters:

idx - the node index

Returns:

the variable denoting the moment.

getIdentifier

public String getIdentifier()

Description copied from interface: ChocoView

Get the view unique identifier.

Specified by:

getIdentifier in interface ChocoView

Returns:

a non-empty String

beforeSolve

public boolean beforeSolve(ReconfigurationProblem rp)

Description copied from interface: ChocoView

An event that is send to indicate a RP will be solved. The view can then customize the RP a last time.

Specified by:

beforeSolve in interface ChocoView

Parameters:

rp - the problem we solve

Returns:

false iff there will be no solution to the RP.