1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.osm;
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3 |
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4 | import java.util.ArrayList;
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5 | import java.util.Arrays;
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6 | import java.util.Collection;
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7 | import java.util.HashSet;
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8 | import java.util.List;
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9 | import java.util.Set;
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10 |
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11 | import org.openstreetmap.josm.Main;
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12 | import org.openstreetmap.josm.data.osm.visitor.PrimitiveVisitor;
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13 | import org.openstreetmap.josm.data.osm.visitor.Visitor;
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14 | import org.openstreetmap.josm.tools.CopyList;
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15 |
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16 | /**
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17 | * An relation, having a set of tags and any number (0...n) of members.
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18 | *
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19 | * @author Frederik Ramm <frederik@remote.org>
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20 | */
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21 | public final class Relation extends OsmPrimitive implements IRelation {
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22 |
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23 | private RelationMember[] members = new RelationMember[0];
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24 |
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25 | private BBox bbox;
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26 |
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27 | /**
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28 | * @return Members of the relation. Changes made in returned list are not mapped
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29 | * back to the primitive, use setMembers() to modify the members
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30 | * @since 1925
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31 | */
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32 | public List<RelationMember> getMembers() {
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33 | return new CopyList<RelationMember>(members);
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34 | }
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35 |
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36 | /**
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37 | *
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38 | * @param members Can be null, in that case all members are removed
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39 | * @since 1925
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40 | */
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41 | public void setMembers(List<RelationMember> members) {
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42 | boolean locked = writeLock();
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43 | try {
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44 | for (RelationMember rm : this.members) {
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45 | rm.getMember().removeReferrer(this);
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46 | rm.getMember().clearCachedStyle();
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47 | }
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48 |
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49 | if (members != null) {
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50 | this.members = members.toArray(new RelationMember[members.size()]);
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51 | } else {
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52 | this.members = new RelationMember[0];
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53 | }
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54 | for (RelationMember rm : this.members) {
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55 | rm.getMember().addReferrer(this);
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56 | rm.getMember().clearCachedStyle();
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57 | }
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58 |
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59 | fireMembersChanged();
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60 | } finally {
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61 | writeUnlock(locked);
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62 | }
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63 | }
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64 |
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65 | /**
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66 | * @return number of members
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67 | */
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68 | @Override
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69 | public int getMembersCount() {
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70 | return members.length;
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71 | }
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72 |
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73 | public RelationMember getMember(int index) {
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74 | return members[index];
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75 | }
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76 |
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77 | public void addMember(RelationMember member) {
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78 | boolean locked = writeLock();
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79 | try {
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80 | RelationMember[] newMembers = new RelationMember[members.length + 1];
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81 | System.arraycopy(members, 0, newMembers, 0, members.length);
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82 | newMembers[members.length] = member;
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83 | members = newMembers;
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84 | member.getMember().addReferrer(this);
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85 | member.getMember().clearCachedStyle();
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86 | fireMembersChanged();
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87 | } finally {
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88 | writeUnlock(locked);
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89 | }
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90 | }
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91 |
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92 | public void addMember(int index, RelationMember member) {
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93 | boolean locked = writeLock();
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94 | try {
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95 | RelationMember[] newMembers = new RelationMember[members.length + 1];
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96 | System.arraycopy(members, 0, newMembers, 0, index);
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97 | System.arraycopy(members, index, newMembers, index + 1, members.length - index);
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98 | newMembers[index] = member;
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99 | members = newMembers;
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100 | member.getMember().addReferrer(this);
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101 | member.getMember().clearCachedStyle();
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102 | fireMembersChanged();
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103 | } finally {
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104 | writeUnlock(locked);
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105 | }
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106 | }
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107 |
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108 | /**
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109 | * Replace member at position specified by index.
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110 | * @param index
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111 | * @param member
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112 | * @return Member that was at the position
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113 | */
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114 | public RelationMember setMember(int index, RelationMember member) {
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115 | boolean locked = writeLock();
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116 | try {
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117 | RelationMember originalMember = members[index];
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118 | members[index] = member;
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119 | if (originalMember.getMember() != member.getMember()) {
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120 | member.getMember().addReferrer(this);
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121 | member.getMember().clearCachedStyle();
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122 | originalMember.getMember().removeReferrer(this);
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123 | originalMember.getMember().clearCachedStyle();
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124 | fireMembersChanged();
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125 | }
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126 | return originalMember;
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127 | } finally {
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128 | writeUnlock(locked);
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129 | }
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130 | }
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131 |
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132 | /**
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133 | * Removes member at specified position.
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134 | * @param index
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135 | * @return Member that was at the position
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136 | */
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137 | public RelationMember removeMember(int index) {
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138 | boolean locked = writeLock();
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139 | try {
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140 | List<RelationMember> members = getMembers();
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141 | RelationMember result = members.remove(index);
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142 | setMembers(members);
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143 | return result;
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144 | } finally {
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145 | writeUnlock(locked);
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146 | }
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147 | }
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148 |
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149 | @Override
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150 | public long getMemberId(int idx) {
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151 | return members[idx].getUniqueId();
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152 | }
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153 |
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154 | @Override
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155 | public String getRole(int idx) {
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156 | return members[idx].getRole();
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157 | }
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158 |
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159 | @Override
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160 | public OsmPrimitiveType getMemberType(int idx) {
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161 | return members[idx].getType();
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162 | }
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163 |
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164 | @Override public void visit(Visitor visitor) {
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165 | visitor.visit(this);
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166 | }
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167 |
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168 | @Override public void visit(PrimitiveVisitor visitor) {
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169 | visitor.visit(this);
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170 | }
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171 |
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172 | protected Relation(long id, boolean allowNegative) {
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173 | super(id, allowNegative);
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174 | }
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175 |
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176 | /**
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177 | * Create a new relation with id 0
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178 | */
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179 | public Relation() {
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180 | super(0, false);
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181 | }
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182 |
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183 | public Relation(Relation clone, boolean clearId) {
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184 | super(clone.getUniqueId(), true);
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185 | cloneFrom(clone);
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186 | if (clearId) {
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187 | clearOsmId();
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188 | }
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189 | }
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190 |
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191 | /**
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192 | * Create an identical clone of the argument (including the id)
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193 | */
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194 | public Relation(Relation clone) {
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195 | this(clone, false);
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196 | }
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197 |
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198 | /**
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199 | * Creates a new relation for the given id. If the id > 0, the way is marked
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200 | * as incomplete.
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201 | *
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202 | * @param id the id. > 0 required
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203 | * @throws IllegalArgumentException thrown if id < 0
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204 | */
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205 | public Relation(long id) throws IllegalArgumentException {
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206 | super(id, false);
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207 | }
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208 |
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209 | /**
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210 | * Creates new relation
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211 | * @param id
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212 | * @param version
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213 | */
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214 | public Relation(long id, int version) {
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215 | super(id, version, false);
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216 | }
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217 |
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218 | @Override public void cloneFrom(OsmPrimitive osm) {
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219 | boolean locked = writeLock();
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220 | try {
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221 | super.cloneFrom(osm);
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222 | // It's not necessary to clone members as RelationMember class is immutable
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223 | setMembers(((Relation)osm).getMembers());
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224 | } finally {
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225 | writeUnlock(locked);
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226 | }
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227 | }
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228 |
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229 | @Override public void load(PrimitiveData data) {
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230 | boolean locked = writeLock();
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231 | try {
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232 | super.load(data);
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233 |
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234 | RelationData relationData = (RelationData) data;
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235 |
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236 | List<RelationMember> newMembers = new ArrayList<RelationMember>();
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237 | for (RelationMemberData member : relationData.getMembers()) {
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238 | OsmPrimitive primitive = getDataSet().getPrimitiveById(member);
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239 | if (primitive == null)
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240 | throw new AssertionError("Data consistency problem - relation with missing member detected");
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241 | newMembers.add(new RelationMember(member.getRole(), primitive));
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242 | }
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243 | setMembers(newMembers);
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244 | } finally {
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245 | writeUnlock(locked);
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246 | }
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247 | }
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248 |
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249 | @Override public RelationData save() {
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250 | RelationData data = new RelationData();
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251 | saveCommonAttributes(data);
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252 | for (RelationMember member:getMembers()) {
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253 | data.getMembers().add(new RelationMemberData(member.getRole(), member.getMember()));
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254 | }
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255 | return data;
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256 | }
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257 |
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258 | @Override public String toString() {
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259 | StringBuilder result = new StringBuilder();
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260 | result.append("{Relation id=");
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261 | result.append(getUniqueId());
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262 | result.append(" version=");
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263 | result.append(getVersion());
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264 | result.append(" ");
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265 | result.append(getFlagsAsString());
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266 | result.append(" [");
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267 | for (RelationMember rm:getMembers()) {
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268 | result.append(OsmPrimitiveType.from(rm.getMember()));
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269 | result.append(" ");
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270 | result.append(rm.getMember().getUniqueId());
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271 | result.append(", ");
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272 | }
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273 | result.delete(result.length()-2, result.length());
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274 | result.append("]");
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275 | result.append("}");
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276 | return result.toString();
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277 | }
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278 |
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279 | @Override
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280 | public boolean hasEqualSemanticAttributes(OsmPrimitive other) {
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281 | if (other == null || ! (other instanceof Relation) )
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282 | return false;
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283 | if (! super.hasEqualSemanticAttributes(other))
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284 | return false;
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285 | Relation r = (Relation)other;
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286 | return Arrays.equals(members, r.members);
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287 | }
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288 |
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289 | @Override
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290 | public int compareTo(OsmPrimitive o) {
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291 | return o instanceof Relation ? Long.valueOf(getUniqueId()).compareTo(o.getUniqueId()) : -1;
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292 | }
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293 |
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294 | public RelationMember firstMember() {
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295 | if (isIncomplete()) return null;
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296 |
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297 | RelationMember[] members = this.members;
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298 | return (members.length == 0) ? null : members[0];
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299 | }
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300 | public RelationMember lastMember() {
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301 | if (isIncomplete()) return null;
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302 |
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303 | RelationMember[] members = this.members;
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304 | return (members.length == 0) ? null : members[members.length - 1];
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305 | }
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306 |
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307 | /**
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308 | * removes all members with member.member == primitive
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309 | *
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310 | * @param primitive the primitive to check for
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311 | */
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312 | public void removeMembersFor(OsmPrimitive primitive) {
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313 | if (primitive == null)
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314 | return;
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315 |
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316 | boolean locked = writeLock();
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317 | try {
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318 | List<RelationMember> todelete = new ArrayList<RelationMember>();
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319 | for (RelationMember member: members) {
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320 | if (member.getMember() == primitive) {
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321 | todelete.add(member);
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322 | }
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323 | }
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324 | List<RelationMember> members = getMembers();
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325 | members.removeAll(todelete);
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326 | setMembers(members);
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327 | } finally {
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328 | writeUnlock(locked);
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329 | }
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330 | }
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331 |
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332 | @Override
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333 | public void setDeleted(boolean deleted) {
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334 | boolean locked = writeLock();
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335 | try {
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336 | for (RelationMember rm:members) {
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337 | if (deleted) {
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338 | rm.getMember().removeReferrer(this);
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339 | } else {
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340 | rm.getMember().addReferrer(this);
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341 | }
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342 | }
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343 | super.setDeleted(deleted);
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344 | } finally {
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345 | writeUnlock(locked);
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346 | }
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347 | }
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348 |
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349 | /**
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350 | * removes all members with member.member == primitive
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351 | *
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352 | * @param primitives the primitives to check for
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353 | */
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354 | public void removeMembersFor(Collection<OsmPrimitive> primitives) {
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355 | if (primitives == null || primitives.isEmpty())
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356 | return;
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357 |
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358 | boolean locked = writeLock();
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359 | try {
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360 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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361 | for (RelationMember member: members) {
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362 | if (primitives.contains(member.getMember())) {
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363 | todelete.add(member);
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364 | }
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365 | }
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366 | List<RelationMember> members = getMembers();
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367 | members.removeAll(todelete);
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368 | setMembers(members);
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369 | } finally {
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370 | writeUnlock(locked);
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371 | }
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372 | }
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373 |
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374 | @Override
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375 | public String getDisplayName(NameFormatter formatter) {
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376 | return formatter.format(this);
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377 | }
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378 |
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379 | /**
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380 | * Replies the set of {@link OsmPrimitive}s referred to by at least one
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381 | * member of this relation
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382 | *
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383 | * @return the set of {@link OsmPrimitive}s referred to by at least one
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384 | * member of this relation
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385 | */
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386 | public Set<OsmPrimitive> getMemberPrimitives() {
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387 | HashSet<OsmPrimitive> ret = new HashSet<OsmPrimitive>();
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388 | RelationMember[] members = this.members;
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389 | for (RelationMember m: members) {
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390 | if (m.getMember() != null) {
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391 | ret.add(m.getMember());
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392 | }
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393 | }
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394 | return ret;
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395 | }
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396 |
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397 | @Override
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398 | public OsmPrimitiveType getType() {
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399 | return OsmPrimitiveType.RELATION;
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400 | }
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401 |
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402 | @Override
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403 | public OsmPrimitiveType getDisplayType() {
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404 | return isMultipolygon() ? OsmPrimitiveType.MULTIPOLYGON
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405 | : OsmPrimitiveType.RELATION;
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406 | }
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407 |
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408 | public boolean isMultipolygon() {
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409 | return "multipolygon".equals(get("type")) || "boundary".equals(get("type"));
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410 | }
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411 |
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412 | @Override
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413 | public BBox getBBox() {
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414 | RelationMember[] members = this.members;
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415 |
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416 | if (members.length == 0)
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417 | return new BBox(0, 0, 0, 0);
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418 | if (getDataSet() == null)
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419 | return calculateBBox(new HashSet<PrimitiveId>());
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420 | else {
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421 | if (bbox == null) {
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422 | bbox = calculateBBox(new HashSet<PrimitiveId>());
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423 | }
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424 | if (bbox == null)
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425 | return new BBox(0, 0, 0, 0); // No real members
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426 | else
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427 | return new BBox(bbox);
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428 | }
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429 | }
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430 |
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431 | private BBox calculateBBox(Set<PrimitiveId> visitedRelations) {
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432 | if (visitedRelations.contains(this))
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433 | return null;
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434 | visitedRelations.add(this);
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435 |
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436 | RelationMember[] members = this.members;
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437 | if (members.length == 0)
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438 | return null;
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439 | else {
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440 | BBox result = null;
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441 | for (RelationMember rm:members) {
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442 | BBox box = rm.isRelation()?rm.getRelation().calculateBBox(visitedRelations):rm.getMember().getBBox();
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443 | if (box != null) {
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444 | if (result == null) {
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445 | result = box;
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446 | } else {
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447 | result.add(box);
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448 | }
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449 | }
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450 | }
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451 | return result;
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452 | }
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453 | }
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454 |
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455 | @Override
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456 | public void updatePosition() {
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457 | bbox = calculateBBox(new HashSet<PrimitiveId>());
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458 | }
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459 |
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460 | @Override
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461 | public void setDataset(DataSet dataSet) {
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462 | super.setDataset(dataSet);
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463 | checkMembers();
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464 | bbox = null; // bbox might have changed if relation was in ds, was removed, modified, added back to dataset
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465 | }
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466 |
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467 | private void checkMembers() {
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468 | DataSet dataSet = getDataSet();
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469 | if (dataSet != null) {
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470 | RelationMember[] members = this.members;
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471 | for (RelationMember rm: members) {
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472 | if (rm.getMember().getDataSet() != dataSet)
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473 | throw new DataIntegrityProblemException(String.format("Relation member must be part of the same dataset as relation(%s, %s)", getPrimitiveId(), rm.getMember().getPrimitiveId()));
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474 | }
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475 | if (Main.pref.getBoolean("debug.checkDeleteReferenced", true)) {
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476 | for (RelationMember rm: members) {
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477 | if (rm.getMember().isDeleted())
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478 | throw new DataIntegrityProblemException("Deleted member referenced: " + toString());
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479 | }
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480 | }
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481 | }
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482 | }
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483 |
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484 | private void fireMembersChanged() {
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485 | checkMembers();
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486 | if (getDataSet() != null) {
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487 | getDataSet().fireRelationMembersChanged(this);
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488 | }
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489 | }
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490 |
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491 | /**
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492 | * Replies true if at least one child primitive is incomplete
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493 | *
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494 | * @return true if at least one child primitive is incomplete
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495 | */
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496 | public boolean hasIncompleteMembers() {
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497 | RelationMember[] members = this.members;
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498 | for (RelationMember rm: members) {
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499 | if (rm.getMember().isIncomplete()) return true;
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500 | }
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501 | return false;
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502 | }
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503 |
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504 | /**
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505 | * Replies a collection with the incomplete children this relation
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506 | * refers to
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507 | *
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508 | * @return the incomplete children. Empty collection if no children are incomplete.
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509 | */
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510 | public Collection<OsmPrimitive> getIncompleteMembers() {
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511 | Set<OsmPrimitive> ret = new HashSet<OsmPrimitive>();
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512 | RelationMember[] members = this.members;
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513 | for (RelationMember rm: members) {
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514 | if (!rm.getMember().isIncomplete()) {
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515 | continue;
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516 | }
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517 | ret.add(rm.getMember());
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518 | }
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519 | return ret;
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520 | }
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521 | }
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