001 /* EVolve - an Extensible Software Visualization Framework 002 * Copyright (C) 2001-2002 Qin Wang 003 * 004 * This library is free software; you can redistribute it and/or 005 * modify it under the terms of the GNU Library General Public 006 * License as published by the Free Software Foundation; either 007 * version 2 of the License, or (at your option) any later version. 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Library General Public License for more details. 013 * 014 * You should have received a copy of the GNU Library General Public 015 * License along with this library; if not, write to the 016 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 017 * Boston, MA 02111-1307, USA. 018 */ 019 020 /* 021 * EVolve is distributed at http://www.sable.mcgill.ca/EVolve/ 022 */ 023 024 package EVolve.data; 025 026 import EVolve.*; 027 028 public class ReferenceLink { 029 private String name; // name of the link 030 private int sourceType; // type of the source element 031 private int sourceIndex; // field index of the source element 032 private int targetType; // type of the target entity 033 private int[] target; // id of the targets 034 private String description; // description of the link 035 036 /** 037 * Creates a reference link. 038 * 039 * @param name name of the link 040 * @param sourceType type of the source element 041 * @param sourceIndex field index of the source element 042 * @param targetType type of the target entity 043 * @param description description of the link 044 */ 045 public ReferenceLink(String name, int sourceType, int sourceIndex, int targetType, String description) { 046 this.name = name; 047 this.sourceType = sourceType; 048 this.sourceIndex = sourceIndex; 049 this.targetType = targetType; 050 this.description = description; 051 052 target = new int[Scene.getDataManager().getEntity()[targetType].length]; 053 for (int i = 0; i < target.length; i++) { 054 target[i] = i; 055 } 056 } 057 058 /** 059 * Creates a reference link by combining two reference links. 060 * 061 * @param from where the link starts 062 * @param to where the link ends 063 */ 064 public ReferenceLink(ReferenceLink from, ReferenceLink to) { 065 this.name = to.name; 066 this.sourceType = from.sourceType; 067 this.sourceIndex = from.sourceIndex; 068 this.targetType = to.targetType; 069 this.description = from.description + " >>> " + to.description; 070 071 target = new int[from.target.length]; 072 for (int i = 0; i < target.length; i++) { 073 target[i] = to.target[Scene.getDataManager().getEntity()[from.targetType][from.target[i]].getField()[to.sourceIndex]]; 074 } 075 } 076 077 /** 078 * Gets the name of the link. 079 * 080 * @return name of the link 081 */ 082 public String getName() { 083 return name; 084 } 085 086 /** 087 * Gets the type of the source element. 088 * 089 * @return type of the source element 090 */ 091 public int getSourceType() { 092 return sourceType; 093 } 094 095 /** 096 * Gets the field index of the source element. 097 * 098 * @return field index of the source element 099 */ 100 public int getSourceIndex() { 101 return sourceIndex; 102 } 103 104 /** 105 * Gets the type of the target entity. 106 * 107 * @return type of the target entity 108 */ 109 public int getTargetType() { 110 return targetType; 111 } 112 113 /** 114 * Gets the target. 115 * 116 * @param source reference 117 * @return target 118 */ 119 public int getTarget(int source) { 120 return target[source]; 121 } 122 123 /** 124 * Gets the description of the link. 125 * 126 * @return description of the link 127 */ 128 public String getDescription() { 129 return description; 130 } 131 }