/*
* Copyright (c) 2005-2010 KOM – Multimedia Communications Lab
*
* This file is part of PeerfactSim.KOM.
*
* PeerfactSim.KOM is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* PeerfactSim.KOM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PeerfactSim.KOM. If not, see .
*
*/
package de.tud.kom.p2psim.impl.vehicular.caching.decision;
import java.util.List;
import de.tudarmstadt.maki.simonstrator.api.Time;
import de.tudarmstadt.maki.simonstrator.api.component.sensor.environment.data.TemporalDependencyMatrix;
import de.tudarmstadt.maki.simonstrator.api.component.sensor.environment.data.VectoralProperty;
import de.tudarmstadt.maki.simonstrator.api.component.vehicular.caching.decision.CacheDecisionStrategy;
import de.tudarmstadt.maki.simonstrator.api.component.vehicular.information.AvailableInformationAttributes;
import de.tudarmstadt.maki.simonstrator.api.component.vehicular.information.PointInformation;
import de.tudarmstadt.maki.simonstrator.api.component.vehicular.information.RoadInformation;
public class MajorityVotingVectoralCacheDecisionStrategy implements CacheDecisionStrategy {
private static final long SCALING = Time.SECOND;
@Override
public T decideOnCorrectInformation(
List pSimilarPointInformation) {
VectoralProperty currentProperty = null;
long minTimestamp = Long.MAX_VALUE;
long maxTimestamp = 0;
for (T t : pSimilarPointInformation) {
long timestamp = t.getDetectionDate();
if (timestamp < minTimestamp) {
minTimestamp = timestamp;
}
if (timestamp > maxTimestamp) {
maxTimestamp = timestamp;
}
}
for (T t : pSimilarPointInformation) {
RoadInformation roadInformation = ((RoadInformation) t);
VectoralProperty property = (VectoralProperty) roadInformation.getValue();
TemporalDependencyMatrix dependencyMatrix = property.getDependencyMatrix();
VectoralProperty agedProperty = property.age((maxTimestamp - property.getDetectionDate()) / SCALING, dependencyMatrix);
if (currentProperty != null) {
currentProperty = currentProperty.combine(agedProperty);
} else {
currentProperty = agedProperty;
}
}
// TemporalDependencyMatrix dependencyMatrix = currentProperty.getDependencyMatrix();
//
// VectoralProperty agedProperty = currentProperty.age((Time.getCurrentTime() - maxTimestamp) / SCALING, dependencyMatrix);
RoadInformation roadInformation = new RoadInformation(currentProperty);
copyAttributes((RoadInformation) pSimilarPointInformation.get(0), roadInformation);
return (T) roadInformation;
}
/**
* @param pT
* @param pRoadInformation
*/
private void copyAttributes(RoadInformation pSrc, RoadInformation pDest) {
for (AvailableInformationAttributes attribute : pSrc.getAvailableAttributes()) {
pDest.setAttribute(attribute, pSrc.getAttribute(attribute));
}
}
}