From 64a2146cc9b66d7f86e714d75de29f5a6a423cab Mon Sep 17 00:00:00 2001
From: Nikolaus Huber <nikolaus.huber@uni-wuerzburg.de>
Date: Tue, 14 May 2013 11:32:43 +0000
Subject: [PATCH] git-svn-id:
https://se1.informatik.uni-wuerzburg.de/usvn/svn/code/code/DMM/trunk@11546
9e42b895-fcda-4063-8a3b-11be15eb1bbd
---
.../WeightedSumCalculator.java | 73 +++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java
diff --git a/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java
new file mode 100644
index 00000000..9ce75b18
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation/src/edu/kit/ipd/descartes/adaptation/evaluation/weightingfunction/WeightedSumCalculator.java
@@ -0,0 +1,73 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.weightingfunction;
+
+import org.apache.log4j.Logger;
+import org.eclipse.emf.common.util.EList;
+
+import edu.kit.ipd.descartes.adaptation.model.dmm.util.WeightingFunctionHelper;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.Impact;
+import edu.kit.ipd.descartes.perfdatarepo.MetricValue;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+public class WeightedSumCalculator implements IWeightingFunctionCalculator {
+
+ private Logger logger = Logger.getLogger(WeightedSumCalculator.class);
+ private WeightingFunction weightingFunction = null;
+
+ public WeightedSumCalculator(WeightingFunction f) {
+ setWeightingFunction(f);
+ }
+
+ public WeightedSumCalculator() {
+ }
+
+ public WeightingFunction getWeightingFunction() {
+ return weightingFunction;
+ }
+
+ public void setWeightingFunction(WeightingFunction weightingFunction) {
+ this.weightingFunction = weightingFunction;
+ }
+
+ @Override
+ public double calculateWeight(WeightedTactic weightedtactic) {
+
+ double newWeight = 0.0;
+ Impact impact = weightedtactic.getLastImpact();
+ Result before = impact.getBefore();
+ Result after = impact.getAfter();
+ EList<MetricValue> afterMetricValues = after.getMetricValues();
+
+ for (MetricValue afterMetricValue : afterMetricValues) {
+ // calculated delta=(after-before)
+ double afterValue = afterMetricValue.getValue();
+ double beforeValue = WeightingFunctionHelper
+ .getValueForMetricType(afterMetricValue.getMetricType(), before);
+ double delta = afterValue - beforeValue;
+
+ // get the corresponding weight
+ double weightOfMetric = WeightingFunctionHelper.getWeightForMetricType(weightingFunction,
+ afterMetricValue.getMetricType());
+
+ if (Double.isNaN(weightOfMetric))
+ logger.info("No weight found for metric type: " + afterMetricValue.getMetricType().getName() + ", skipping...");
+ else {
+ // add it
+ newWeight += weightOfMetric * delta;
+ logger.debug("Delta for metric type " + afterMetricValue.getMetricType().getName() + " was: " + delta
+ + " and weight is " + weightOfMetric);
+ }
+ }
+
+ return newWeight;
+ }
+
+ @Override
+ public void updateWeight(WeightedTactic weightedTactic) {
+ double newWeight = calculateWeight(weightedTactic);
+ logger.debug("Setting new weight of " + weightedTactic.getName() + " to " + newWeight);
+ weightedTactic.setCurrentWeight(newWeight);
+ }
+
+}
--
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