1 | package org.openstreetmap.josm.data.osm;
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2 |
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3 | import java.util.ArrayList;
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4 | import java.util.Collection;
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5 | import java.util.HashMap;
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6 | import java.util.HashSet;
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7 | import java.util.List;
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8 | import java.util.Map;
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9 | import java.util.Set;
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10 |
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11 | import org.openstreetmap.josm.data.osm.visitor.Visitor;
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12 | import org.openstreetmap.josm.tools.CopyList;
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13 |
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14 | /**
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15 | * An relation, having a set of tags and any number (0...n) of members.
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16 | *
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17 | * @author Frederik Ramm <frederik@remote.org>
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18 | */
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19 | public final class Relation extends OsmPrimitive {
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20 |
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21 | /**
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22 | * All members of this relation. Note that after changing this,
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23 | * makeBackReferences and/or removeBackReferences should be called.
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24 | *
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25 | */
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26 | private final List<RelationMember> members = new ArrayList<RelationMember>();
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27 |
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28 | /**
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29 | * @return Members of the relation. Changes made in returned list are not mapped
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30 | * back to the primitive, use setMembers() to modify the members
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31 | * @since 1925
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32 | */
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33 | public List<RelationMember> getMembers() {
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34 | return new CopyList<RelationMember>(members.toArray(new RelationMember[members.size()]));
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35 | }
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36 |
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37 | /**
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38 | *
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39 | * @param members Can be null, in that case all members are removed
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40 | * @since 1925
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41 | */
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42 | public void setMembers(List<RelationMember> members) {
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43 | this.members.clear();
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44 | if (members != null) {
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45 | this.members.addAll(members);
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46 | }
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47 | }
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48 |
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49 | /**
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50 | *
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51 | * @since 1926
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52 | */
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53 | public int getMembersCount() {
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54 | return members.size();
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55 | }
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56 |
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57 | /**
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58 | *
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59 | * @param index
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60 | * @return
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61 | * @since 1926
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62 | */
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63 | public RelationMember getMember(int index) {
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64 | return members.get(index);
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65 | }
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66 |
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67 | /**
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68 | *
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69 | * @param member
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70 | * @since 1951
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71 | */
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72 | public void addMember(RelationMember member) {
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73 | members.add(member);
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74 | }
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75 |
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76 | /**
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77 | *
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78 | * @param index
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79 | * @param member
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80 | * @since 1951
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81 | */
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82 | public void addMember(int index, RelationMember member) {
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83 | members.add(index, member);
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84 | }
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85 |
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86 | /**
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87 | * Replace member at position specified by index.
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88 | * @param index
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89 | * @param member
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90 | * @return Member that was at the position
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91 | * @since 1951
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92 | */
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93 | public RelationMember setMember(int index, RelationMember member) {
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94 | return members.set(index, member);
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95 | }
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96 |
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97 | /**
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98 | * Removes member at specified position.
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99 | * @param index
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100 | * @return Member that was at the position
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101 | * @since 1951
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102 | */
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103 | public RelationMember removeMember(int index) {
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104 | return members.remove(index);
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105 | }
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106 |
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107 | @Override public void visit(Visitor visitor) {
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108 | visitor.visit(this);
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109 | }
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110 |
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111 | protected Relation(long id, boolean allowNegative) {
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112 | super(id, allowNegative);
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113 | }
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114 |
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115 | /**
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116 | * Create a new relation with id 0
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117 | */
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118 | public Relation() {
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119 | super(0, false);
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120 | }
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121 |
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122 | /**
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123 | * Create an identical clone of the argument (including the id)
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124 | */
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125 | public Relation(Relation clone) {
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126 | super(clone.getUniqueId(), true);
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127 | cloneFrom(clone);
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128 | }
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129 |
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130 | /**
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131 | * Creates a new relation for the given id. If the id > 0, the way is marked
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132 | * as incomplete.
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133 | *
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134 | * @param id the id. > 0 required
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135 | * @throws IllegalArgumentException thrown if id < 0
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136 | */
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137 | public Relation(long id) throws IllegalArgumentException {
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138 | super(id, false);
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139 | }
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140 |
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141 | public Relation(RelationData data, DataSet dataSet) {
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142 | super(data);
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143 | load(data, dataSet);
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144 | }
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145 |
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146 |
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147 | @Override public void cloneFrom(OsmPrimitive osm) {
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148 | super.cloneFrom(osm);
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149 | members.clear();
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150 | // we must not add the members themselves, but instead
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151 | // add clones of the members
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152 | for (RelationMember em : ((Relation)osm).getMembers()) {
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153 | members.add(new RelationMember(em));
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154 | }
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155 | }
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156 |
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157 | @Override public void load(PrimitiveData data, DataSet dataSet) {
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158 | super.load(data, dataSet);
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159 |
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160 | RelationData relationData = (RelationData)data;
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161 |
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162 | // TODO Make this faster
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163 |
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164 | Node nodeMarker = new Node();
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165 | Way wayMarker = new Way();
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166 | Relation relationMarker = new Relation();
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167 | Map<Long, Node> nodes = new HashMap<Long, Node>();
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168 | Map<Long, Way> ways = new HashMap<Long, Way>();
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169 | Map<Long, Relation> relations = new HashMap<Long, Relation>();
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170 |
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171 | for (RelationMemberData member:relationData.getMembers()) {
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172 | switch (member.getMemberType()) {
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173 | case NODE:
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174 | nodes.put(member.getMemberId(), nodeMarker);
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175 | break;
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176 | case WAY:
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177 | ways.put(member.getMemberId(), wayMarker);
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178 | break;
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179 | case RELATION:
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180 | relations.put(member.getMemberId(), relationMarker);
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181 | break;
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182 | }
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183 | }
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184 |
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185 | for (Node node:dataSet.nodes) {
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186 | if (nodes.get(node.getUniqueId()) == nodeMarker) {
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187 | nodes.put(node.getUniqueId(), node);
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188 | }
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189 | }
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190 | for (Way way:dataSet.ways) {
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191 | if (ways.get(way.getUniqueId()) == wayMarker) {
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192 | ways.put(way.getUniqueId(), way);
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193 | }
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194 | }
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195 | for (Relation relation:dataSet.relations) {
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196 | if (relations.get(relation.getUniqueId()) == relationMarker) {
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197 | relations.put(relation.getUniqueId(), relation);
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198 | }
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199 | }
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200 |
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201 | List<RelationMember> newMembers = new ArrayList<RelationMember>();
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202 | for (RelationMemberData member:relationData.getMembers()) {
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203 | OsmPrimitive foundMember = null;
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204 | switch (member.getMemberType()) {
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205 | case NODE:
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206 | foundMember = nodes.get(member.getMemberId());
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207 | if (foundMember == nodeMarker)
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208 | throw new AssertionError("Data consistency problem - relation with missing member detected");
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209 | break;
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210 | case WAY:
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211 | foundMember = ways.get(member.getMemberId());
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212 | if (foundMember == wayMarker)
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213 | throw new AssertionError("Data consistency problem - relation with missing member detected");
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214 | break;
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215 | case RELATION:
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216 | foundMember = relations.get(member.getMemberId());
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217 | if (foundMember == relationMarker)
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218 | throw new AssertionError("Data consistency problem - relation with missing member detected");
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219 | break;
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220 | }
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221 | newMembers.add(new RelationMember(member.getRole(), foundMember));
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222 | }
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223 | setMembers(newMembers);
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224 | }
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225 |
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226 | @Override public RelationData save() {
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227 | RelationData data = new RelationData();
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228 | saveCommonAttributes(data);
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229 | for (RelationMember member:getMembers()) {
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230 | data.getMembers().add(new RelationMemberData(member.getRole(), member.getMember()));
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231 | }
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232 | return data;
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233 | }
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234 |
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235 | @Override public String toString() {
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236 | // return "{Relation id="+id+" version="+version+" members="+Arrays.toString(members.toArray())+"}";
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237 | // adding members in string increases memory usage a lot and overflows for looped relations
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238 | return "{Relation id="+getId()+" version="+getVersion()+"}";
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239 | }
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240 |
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241 | @Override
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242 | public boolean hasEqualSemanticAttributes(OsmPrimitive other) {
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243 | if (other == null || ! (other instanceof Relation) )
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244 | return false;
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245 | if (! super.hasEqualSemanticAttributes(other))
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246 | return false;
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247 | Relation r = (Relation)other;
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248 | return members.equals(r.members);
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249 | }
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250 |
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251 | public int compareTo(OsmPrimitive o) {
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252 | return o instanceof Relation ? Long.valueOf(getId()).compareTo(o.getId()) : -1;
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253 | }
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254 |
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255 | // seems to be different from member "incomplete" - FIXME
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256 | public boolean isIncomplete() {
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257 | for (RelationMember m : members)
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258 | if (m.getMember() == null)
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259 | return true;
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260 | return false;
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261 | }
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262 |
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263 | public RelationMember firstMember() {
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264 | if (incomplete) return null;
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265 | return (members.size() == 0) ? null : members.get(0);
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266 | }
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267 | public RelationMember lastMember() {
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268 | if (incomplete) return null;
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269 | return (members.size() == 0) ? null : members.get(members.size() -1);
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270 | }
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271 |
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272 | /**
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273 | * removes all members with member.member == primitive
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274 | *
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275 | * @param primitive the primitive to check for
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276 | */
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277 | public void removeMembersFor(OsmPrimitive primitive) {
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278 | if (primitive == null)
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279 | return;
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280 |
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281 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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282 | for (RelationMember member: members) {
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283 | if (member.getMember() == primitive) {
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284 | todelete.add(member);
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285 | }
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286 | }
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287 | members.removeAll(todelete);
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288 | }
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289 |
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290 | /**
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291 | * removes all members with member.member == primitive
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292 | *
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293 | * @param primitives the primitives to check for
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294 | */
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295 | public void removeMembersFor(Collection<OsmPrimitive> primitives) {
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296 | if (primitives == null || primitives.isEmpty())
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297 | return;
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298 |
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299 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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300 | for (RelationMember member: members) {
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301 | if (primitives.contains(member.getMember())) {
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302 | todelete.add(member);
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303 | }
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304 | }
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305 | members.removeAll(todelete);
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306 | }
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307 |
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308 | @Override
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309 | public String getDisplayName(NameFormatter formatter) {
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310 | return formatter.format(this);
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311 | }
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312 |
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313 | /**
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314 | * Replies the set of {@see OsmPrimitive}s referred to by at least one
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315 | * member of this relation
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316 | *
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317 | * @return the set of {@see OsmPrimitive}s referred to by at least one
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318 | * member of this relation
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319 | */
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320 | public Set<OsmPrimitive> getMemberPrimitives() {
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321 | HashSet<OsmPrimitive> ret = new HashSet<OsmPrimitive>();
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322 | for (RelationMember m: members) {
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323 | if (m.getMember() != null) {
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324 | ret.add(m.getMember());
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325 | }
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326 | }
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327 | return ret;
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328 | }
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329 | }
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