Package de.uka.ipd.sdq.dsexplore.opt4j.optimizer.heuristic.operators.impl

Class ReallocationImpl

java.lang.Object

de.uka.ipd.sdq.dsexplore.opt4j.optimizer.heuristic.operators.AbstractTactic

de.uka.ipd.sdq.dsexplore.opt4j.optimizer.heuristic.operators.impl.ReallocationImpl

All Implemented Interfaces:

ITactic

public class ReallocationImpl
extends AbstractTactic

Implements a reallocation heuristic which allocates a component from a highly utilised resource container to a lowly utilised container TODO: Only works for a single resource type so far.

Field Summary

Fields inherited from class de.uka.ipd.sdq.dsexplore.opt4j.optimizer.heuristic.operators.AbstractTactic

copy, individualFactory

Constructor Summary

Constructors

Constructor	Description
ReallocationImpl(org.opt4j.operator.copy.Copy<org.opt4j.core.Genotype> copy, DSEIndividualFactory individualFactory, DSEWorkflowConfiguration configuration)

Method Summary

Modifier and Type	Method	Description
boolean	doesMatchPrecondition(DSEIndividual individual, org.palladiosimulator.pcm.resourcetype.ResourceType resourceType)	Check whether there is one server with high utilization and one with low utilization which are both not null
List<TacticsResultCandidate>	getHeuristicCandidates(DSEIndividual individual, UtilisationResultCacheAndHelper resultCache)	Generates collection of candidates by applying the reallocation heuristic

Methods inherited from class de.uka.ipd.sdq.dsexplore.opt4j.optimizer.heuristic.operators.AbstractTactic

doesNotImprove, getHeuristicWeight, getNumberOfGeneratedCandidates, improves, increaseCounterOfGeneratedCandidates, setHeuristicWeight

Methods inherited from class java.lang.Object

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

Constructor Details

ReallocationImpl

public ReallocationImpl(org.opt4j.operator.copy.Copy<org.opt4j.core.Genotype> copy,
 DSEIndividualFactory individualFactory,
 DSEWorkflowConfiguration configuration)

Parameters:

copy - Used to copy genotype

individualFactory - Used to build individual

Method Details

doesMatchPrecondition

public boolean doesMatchPrecondition(DSEIndividual individual,
 org.palladiosimulator.pcm.resourcetype.ResourceType resourceType)

Check whether there is one server with high utilization and one with low utilization which are both not null

Parameters:

individual - Individual to check

resourceType -

getHeuristicCandidates

public List<TacticsResultCandidate> getHeuristicCandidates(DSEIndividual individual,
 UtilisationResultCacheAndHelper resultCache)

Generates collection of candidates by applying the reallocation heuristic

Parameters:

individual - Individual which the heuristic should be applied to

Returns:

Collection of improved individuals