001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2009 SonarSource SA 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar 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 * Sonar 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 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 021 package org.sonar.api.measures; 022 023 import java.util.List; 024 import java.util.Collections; 025 import java.util.Collection; 026 027 /** 028 * @since 2.0 029 * 030 * Used to consolidate a distribution measure throughout the resource tree 031 */ 032 public class SumChildDistributionFormula implements Formula { 033 034 public List<Metric> dependsUponMetrics() { 035 return Collections.emptyList(); 036 } 037 038 public Measure calculate(FormulaData data, FormulaContext context) { 039 Collection<Measure> measures = data.getChildrenMeasures(context.getTargetMetric()); 040 if (measures == null || measures.isEmpty()) { 041 return null; 042 } 043 else { 044 CountDistributionBuilder distribution = new CountDistributionBuilder(context.getTargetMetric()); 045 for (Measure measure : measures) { 046 distribution.add(measure); 047 } 048 return distribution.build(); 049 } 050 } 051 }