001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 SonarSource 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 package org.sonar.duplications.index; 021 022 import java.util.List; 023 024 import com.google.common.collect.ImmutableList; 025 026 /** 027 * Groups a set of related {@link ClonePart}s. 028 */ 029 public class CloneGroup { 030 031 private final ClonePart originPart; 032 private final int cloneLength; 033 private final List<ClonePart> parts; 034 035 /** 036 * Cache for hash code. 037 */ 038 private int hash; 039 040 public CloneGroup(int cloneLength, ClonePart origin, List<ClonePart> parts) { 041 this.cloneLength = cloneLength; 042 this.originPart = origin; 043 this.parts = ImmutableList.copyOf(parts); 044 } 045 046 public ClonePart getOriginPart() { 047 return originPart; 048 } 049 050 /** 051 * @return clone length in units (not in lines) 052 */ 053 public int getCloneUnitLength() { 054 return cloneLength; 055 } 056 057 public List<ClonePart> getCloneParts() { 058 return parts; 059 } 060 061 @Override 062 public String toString() { 063 StringBuilder builder = new StringBuilder(); 064 for (ClonePart part : parts) { 065 builder.append(part).append(" - "); 066 } 067 builder.append(cloneLength); 068 return builder.toString(); 069 } 070 071 /** 072 * Two groups are equal, if they have same length, same origins and contain same parts in same order. 073 */ 074 @Override 075 public boolean equals(Object object) { 076 if (!(object instanceof CloneGroup)) { 077 return false; 078 } 079 CloneGroup another = (CloneGroup) object; 080 if (another.cloneLength != cloneLength || parts.size() != another.parts.size()) { 081 return false; 082 } 083 if (!originPart.equals(another.originPart)) { 084 return false; 085 } 086 boolean result = true; 087 for (int i = 0; i < parts.size(); i++) { 088 result &= another.parts.get(i).equals(parts.get(i)); 089 } 090 return result; 091 } 092 093 @Override 094 public int hashCode() { 095 int h = hash; 096 if (h == 0 && cloneLength != 0) { 097 for (ClonePart part : parts) { 098 h = 31 * h + part.hashCode(); 099 } 100 h = 31 * h + originPart.hashCode(); 101 h = 31 * h + cloneLength; 102 hash = h; 103 } 104 return h; 105 } 106 107 }