001/* 002 * SonarQube, open source software quality management tool. 003 * Copyright (C) 2008-2014 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * SonarQube is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * SonarQube is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public License 017 * along with this program; if not, write to the Free Software Foundation, 018 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 019 */ 020package org.sonar.api.measures; 021 022import java.util.Collections; 023import java.util.List; 024 025/** 026 * @since 2.0 027 * @deprecated since 5.2 decorators are no more executed on batch side 028 */ 029@Deprecated 030public class WeightedMeanAggregationFormula implements Formula { 031 032 private Metric weightingMetric; 033 private boolean zeroIfNoValues=false; 034 035 public WeightedMeanAggregationFormula(Metric weightingMetric, boolean zeroIfNoValues) { 036 this.weightingMetric = weightingMetric; 037 if (weightingMetric==null) { 038 throw new IllegalArgumentException("Metric can not be null"); 039 } 040 this.zeroIfNoValues = zeroIfNoValues; 041 } 042 043 @Override 044 public List<Metric> dependsUponMetrics() { 045 return Collections.emptyList(); 046 } 047 048 @Override 049 public Measure calculate(FormulaData data, FormulaContext context) { 050 double sum=0.0; 051 double count=0.0; 052 boolean hasValue=false; 053 054 for (FormulaData child : data.getChildren()) { 055 Measure measure = child.getMeasure(context.getTargetMetric()); 056 Measure weightingMeasure = child.getMeasure(weightingMetric); 057 if (MeasureUtils.haveValues(measure, weightingMeasure)) { 058 sum += measure.getValue() * weightingMeasure.getValue(); 059 count += weightingMeasure.getValue(); 060 hasValue=true; 061 } 062 } 063 064 if (!hasValue && !zeroIfNoValues) { 065 return null; 066 } 067 068 double result = (Double.doubleToRawLongBits(count)==0L) ? 0.0 : (sum/count); 069 return new Measure(context.getTargetMetric(), result); 070 } 071} 072