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.Collections;
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8 | import java.util.HashSet;
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9 | import java.util.List;
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10 | import java.util.Map;
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11 | import java.util.Optional;
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12 | import java.util.Set;
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13 | import java.util.stream.Collectors;
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14 |
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15 | import org.openstreetmap.josm.data.osm.visitor.OsmPrimitiveVisitor;
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16 | import org.openstreetmap.josm.data.osm.visitor.PrimitiveVisitor;
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17 | import org.openstreetmap.josm.spi.preferences.Config;
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18 | import org.openstreetmap.josm.tools.CopyList;
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19 | import org.openstreetmap.josm.tools.SubclassFilteredCollection;
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20 | import org.openstreetmap.josm.tools.Utils;
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21 |
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22 | /**
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23 | * A relation, having a set of tags and any number (0...n) of members.
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24 | *
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25 | * @author Frederik Ramm
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26 | */
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27 | public final class Relation extends OsmPrimitive implements IRelation {
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28 |
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29 | private RelationMember[] members = new RelationMember[0];
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30 |
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31 | private BBox bbox;
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32 |
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33 | /**
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34 | * @return Members of the relation. Changes made in returned list are not mapped
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35 | * back to the primitive, use setMembers() to modify the members
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36 | * @since 1925
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37 | */
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38 | public List<RelationMember> getMembers() {
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39 | return new CopyList<>(members);
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40 | }
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41 |
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42 | /**
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43 | *
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44 | * @param members Can be null, in that case all members are removed
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45 | * @since 1925
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46 | */
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47 | public void setMembers(List<RelationMember> members) {
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48 | checkDatasetNotReadOnly();
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49 | boolean locked = writeLock();
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50 | try {
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51 | for (RelationMember rm : this.members) {
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52 | rm.getMember().removeReferrer(this);
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53 | rm.getMember().clearCachedStyle();
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54 | }
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55 |
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56 | if (members != null) {
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57 | this.members = members.toArray(new RelationMember[0]);
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58 | } else {
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59 | this.members = new RelationMember[0];
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60 | }
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61 | for (RelationMember rm : this.members) {
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62 | rm.getMember().addReferrer(this);
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63 | rm.getMember().clearCachedStyle();
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64 | }
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65 |
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66 | fireMembersChanged();
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67 | } finally {
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68 | writeUnlock(locked);
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69 | }
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70 | }
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71 |
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72 | @Override
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73 | public int getMembersCount() {
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74 | return members.length;
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75 | }
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76 |
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77 | /**
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78 | * Returns the relation member at the specified index.
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79 | * @param index the index of the relation member
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80 | * @return relation member at the specified index
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81 | */
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82 | public RelationMember getMember(int index) {
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83 | return members[index];
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84 | }
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85 |
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86 | /**
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87 | * Adds the specified relation member at the last position.
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88 | * @param member the member to add
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89 | */
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90 | public void addMember(RelationMember member) {
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91 | checkDatasetNotReadOnly();
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92 | boolean locked = writeLock();
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93 | try {
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94 | members = Utils.addInArrayCopy(members, member);
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95 | member.getMember().addReferrer(this);
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96 | member.getMember().clearCachedStyle();
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97 | fireMembersChanged();
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98 | } finally {
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99 | writeUnlock(locked);
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100 | }
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101 | }
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102 |
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103 | /**
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104 | * Adds the specified relation member at the specified index.
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105 | * @param member the member to add
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106 | * @param index the index at which the specified element is to be inserted
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107 | */
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108 | public void addMember(int index, RelationMember member) {
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109 | checkDatasetNotReadOnly();
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110 | boolean locked = writeLock();
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111 | try {
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112 | RelationMember[] newMembers = new RelationMember[members.length + 1];
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113 | System.arraycopy(members, 0, newMembers, 0, index);
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114 | System.arraycopy(members, index, newMembers, index + 1, members.length - index);
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115 | newMembers[index] = member;
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116 | members = newMembers;
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117 | member.getMember().addReferrer(this);
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118 | member.getMember().clearCachedStyle();
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119 | fireMembersChanged();
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120 | } finally {
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121 | writeUnlock(locked);
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122 | }
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123 | }
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124 |
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125 | /**
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126 | * Replace member at position specified by index.
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127 | * @param index index (positive integer)
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128 | * @param member relation member to set
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129 | * @return Member that was at the position
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130 | */
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131 | public RelationMember setMember(int index, RelationMember member) {
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132 | checkDatasetNotReadOnly();
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133 | boolean locked = writeLock();
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134 | try {
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135 | RelationMember originalMember = members[index];
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136 | members[index] = member;
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137 | if (originalMember.getMember() != member.getMember()) {
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138 | member.getMember().addReferrer(this);
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139 | member.getMember().clearCachedStyle();
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140 | originalMember.getMember().removeReferrer(this);
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141 | originalMember.getMember().clearCachedStyle();
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142 | fireMembersChanged();
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143 | }
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144 | return originalMember;
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145 | } finally {
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146 | writeUnlock(locked);
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147 | }
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148 | }
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149 |
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150 | /**
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151 | * Removes member at specified position.
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152 | * @param index index (positive integer)
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153 | * @return Member that was at the position
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154 | */
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155 | public RelationMember removeMember(int index) {
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156 | checkDatasetNotReadOnly();
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157 | boolean locked = writeLock();
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158 | try {
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159 | List<RelationMember> members = getMembers();
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160 | RelationMember result = members.remove(index);
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161 | setMembers(members);
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162 | return result;
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163 | } finally {
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164 | writeUnlock(locked);
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165 | }
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166 | }
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167 |
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168 | @Override
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169 | public long getMemberId(int idx) {
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170 | return members[idx].getUniqueId();
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171 | }
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172 |
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173 | @Override
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174 | public String getRole(int idx) {
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175 | return members[idx].getRole();
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176 | }
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177 |
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178 | @Override
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179 | public OsmPrimitiveType getMemberType(int idx) {
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180 | return members[idx].getType();
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181 | }
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182 |
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183 | @Override
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184 | public void accept(OsmPrimitiveVisitor visitor) {
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185 | visitor.visit(this);
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186 | }
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187 |
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188 | @Override
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189 | public void accept(PrimitiveVisitor visitor) {
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190 | visitor.visit(this);
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191 | }
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192 |
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193 | protected Relation(long id, boolean allowNegative) {
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194 | super(id, allowNegative);
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195 | }
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196 |
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197 | /**
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198 | * Create a new relation with id 0
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199 | */
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200 | public Relation() {
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201 | super(0, false);
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202 | }
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203 |
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204 | /**
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205 | * Constructs an identical clone of the argument.
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206 | * @param clone The relation to clone
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207 | * @param clearMetadata If {@code true}, clears the OSM id and other metadata as defined by {@link #clearOsmMetadata}.
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208 | * If {@code false}, does nothing
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209 | */
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210 | public Relation(Relation clone, boolean clearMetadata) {
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211 | super(clone.getUniqueId(), true);
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212 | cloneFrom(clone);
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213 | if (clearMetadata) {
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214 | clearOsmMetadata();
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215 | }
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216 | }
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217 |
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218 | /**
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219 | * Create an identical clone of the argument (including the id)
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220 | * @param clone The relation to clone, including its id
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221 | */
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222 | public Relation(Relation clone) {
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223 | this(clone, false);
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224 | }
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225 |
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226 | /**
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227 | * Creates a new relation for the given id. If the id > 0, the way is marked
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228 | * as incomplete.
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229 | *
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230 | * @param id the id. > 0 required
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231 | * @throws IllegalArgumentException if id < 0
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232 | */
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233 | public Relation(long id) {
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234 | super(id, false);
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235 | }
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236 |
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237 | /**
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238 | * Creates new relation
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239 | * @param id the id
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240 | * @param version version number (positive integer)
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241 | */
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242 | public Relation(long id, int version) {
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243 | super(id, version, false);
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244 | }
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245 |
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246 | @Override
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247 | public void cloneFrom(OsmPrimitive osm) {
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248 | if (!(osm instanceof Relation))
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249 | throw new IllegalArgumentException("Not a relation: " + osm);
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250 | boolean locked = writeLock();
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251 | try {
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252 | super.cloneFrom(osm);
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253 | // It's not necessary to clone members as RelationMember class is immutable
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254 | setMembers(((Relation) osm).getMembers());
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255 | } finally {
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256 | writeUnlock(locked);
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257 | }
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258 | }
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259 |
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260 | @Override
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261 | public void load(PrimitiveData data) {
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262 | if (!(data instanceof RelationData))
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263 | throw new IllegalArgumentException("Not a relation data: " + data);
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264 | boolean locked = writeLock();
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265 | try {
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266 | super.load(data);
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267 |
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268 | RelationData relationData = (RelationData) data;
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269 |
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270 | List<RelationMember> newMembers = new ArrayList<>();
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271 | for (RelationMemberData member : relationData.getMembers()) {
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272 | newMembers.add(new RelationMember(member.getRole(), Optional.ofNullable(getDataSet().getPrimitiveById(member))
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273 | .orElseThrow(() -> new AssertionError("Data consistency problem - relation with missing member detected"))));
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274 | }
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275 | setMembers(newMembers);
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276 | } finally {
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277 | writeUnlock(locked);
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278 | }
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279 | }
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280 |
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281 | @Override
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282 | public RelationData save() {
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283 | RelationData data = new RelationData();
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284 | saveCommonAttributes(data);
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285 | for (RelationMember member:getMembers()) {
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286 | data.getMembers().add(new RelationMemberData(member.getRole(), member.getMember()));
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287 | }
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288 | return data;
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289 | }
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290 |
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291 | @Override
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292 | public String toString() {
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293 | StringBuilder result = new StringBuilder(32);
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294 | result.append("{Relation id=")
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295 | .append(getUniqueId())
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296 | .append(" version=")
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297 | .append(getVersion())
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298 | .append(' ')
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299 | .append(getFlagsAsString())
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300 | .append(" [");
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301 | for (RelationMember rm:getMembers()) {
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302 | result.append(OsmPrimitiveType.from(rm.getMember()))
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303 | .append(' ')
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304 | .append(rm.getMember().getUniqueId())
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305 | .append(", ");
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306 | }
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307 | result.delete(result.length()-2, result.length())
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308 | .append("]}");
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309 | return result.toString();
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310 | }
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311 |
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312 | @Override
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313 | public boolean hasEqualSemanticAttributes(OsmPrimitive other, boolean testInterestingTagsOnly) {
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314 | return (other instanceof Relation)
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315 | && hasEqualSemanticFlags(other)
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316 | && Arrays.equals(members, ((Relation) other).members)
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317 | && super.hasEqualSemanticAttributes(other, testInterestingTagsOnly);
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318 | }
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319 |
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320 | @Override
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321 | public int compareTo(OsmPrimitive o) {
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322 | return o instanceof Relation ? Long.compare(getUniqueId(), o.getUniqueId()) : -1;
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323 | }
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324 |
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325 | /**
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326 | * Returns the first member.
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327 | * @return first member, or {@code null}
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328 | */
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329 | public RelationMember firstMember() {
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330 | return (isIncomplete() || members.length == 0) ? null : members[0];
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331 | }
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332 |
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333 | /**
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334 | * Returns the last member.
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335 | * @return last member, or {@code null}
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336 | */
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337 | public RelationMember lastMember() {
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338 | return (isIncomplete() || members.length == 0) ? null : members[members.length - 1];
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339 | }
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340 |
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341 | /**
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342 | * removes all members with member.member == primitive
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343 | *
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344 | * @param primitive the primitive to check for
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345 | */
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346 | public void removeMembersFor(OsmPrimitive primitive) {
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347 | removeMembersFor(Collections.singleton(primitive));
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348 | }
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349 |
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350 | @Override
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351 | public void setDeleted(boolean deleted) {
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352 | boolean locked = writeLock();
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353 | try {
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354 | for (RelationMember rm:members) {
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355 | if (deleted) {
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356 | rm.getMember().removeReferrer(this);
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357 | } else {
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358 | rm.getMember().addReferrer(this);
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359 | }
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360 | }
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361 | super.setDeleted(deleted);
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362 | } finally {
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363 | writeUnlock(locked);
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364 | }
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365 | }
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366 |
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367 | /**
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368 | * Obtains all members with member.member == primitive
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369 | * @param primitives the primitives to check for
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370 | * @return all relation members for the given primitives
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371 | */
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372 | public Collection<RelationMember> getMembersFor(final Collection<? extends OsmPrimitive> primitives) {
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373 | return SubclassFilteredCollection.filter(getMembers(), member -> primitives.contains(member.getMember()));
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374 | }
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375 |
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376 | /**
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377 | * removes all members with member.member == primitive
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378 | *
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379 | * @param primitives the primitives to check for
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380 | * @since 5613
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381 | */
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382 | public void removeMembersFor(Collection<? extends OsmPrimitive> primitives) {
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383 | checkDatasetNotReadOnly();
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384 | if (primitives == null || primitives.isEmpty())
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385 | return;
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386 |
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387 | boolean locked = writeLock();
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388 | try {
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389 | List<RelationMember> members = getMembers();
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390 | members.removeAll(getMembersFor(primitives));
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391 | setMembers(members);
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392 | } finally {
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393 | writeUnlock(locked);
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394 | }
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395 | }
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396 |
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397 | @Override
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398 | public String getDisplayName(NameFormatter formatter) {
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399 | return formatter.format(this);
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400 | }
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401 |
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402 | /**
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403 | * Replies the set of {@link OsmPrimitive}s referred to by at least one
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404 | * member of this relation
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405 | *
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406 | * @return the set of {@link OsmPrimitive}s referred to by at least one
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407 | * member of this relation
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408 | * @see #getMemberPrimitivesList()
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409 | */
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410 | public Set<OsmPrimitive> getMemberPrimitives() {
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411 | return getMembers().stream().map(RelationMember::getMember).collect(Collectors.toSet());
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412 | }
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413 |
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414 | /**
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415 | * Returns the {@link OsmPrimitive}s of the specified type referred to by at least one member of this relation.
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416 | * @param tClass the type of the primitive
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417 | * @param <T> the type of the primitive
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418 | * @return the primitives
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419 | */
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420 | public <T extends OsmPrimitive> Collection<T> getMemberPrimitives(Class<T> tClass) {
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421 | return Utils.filteredCollection(getMemberPrimitivesList(), tClass);
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422 | }
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423 |
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424 | /**
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425 | * Returns an unmodifiable list of the {@link OsmPrimitive}s referred to by at least one member of this relation.
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426 | * @return an unmodifiable list of the primitives
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427 | */
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428 | public List<OsmPrimitive> getMemberPrimitivesList() {
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429 | return Utils.transform(getMembers(), RelationMember::getMember);
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430 | }
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431 |
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432 | @Override
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433 | public OsmPrimitiveType getType() {
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434 | return OsmPrimitiveType.RELATION;
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435 | }
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436 |
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437 | @Override
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438 | public OsmPrimitiveType getDisplayType() {
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439 | return isMultipolygon() && !isBoundary() ? OsmPrimitiveType.MULTIPOLYGON : OsmPrimitiveType.RELATION;
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440 | }
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441 |
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442 | /**
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443 | * Determines if this relation is a boundary.
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444 | * @return {@code true} if a boundary relation
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445 | */
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446 | public boolean isBoundary() {
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447 | return "boundary".equals(get("type"));
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448 | }
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449 |
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450 | @Override
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451 | public boolean isMultipolygon() {
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452 | return "multipolygon".equals(get("type")) || isBoundary();
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453 | }
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454 |
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455 | @Override
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456 | public BBox getBBox() {
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457 | if (getDataSet() != null && bbox != null)
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458 | return new BBox(bbox); // use cached value
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459 |
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460 | BBox box = new BBox();
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461 | addToBBox(box, new HashSet<PrimitiveId>());
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462 | if (getDataSet() != null)
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463 | setBBox(box); // set cache
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464 | return new BBox(box);
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465 | }
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466 |
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467 | private void setBBox(BBox bbox) {
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468 | this.bbox = bbox;
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469 | }
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470 |
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471 | @Override
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472 | protected void addToBBox(BBox box, Set<PrimitiveId> visited) {
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473 | for (RelationMember rm : members) {
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474 | if (visited.add(rm.getMember()))
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475 | rm.getMember().addToBBox(box, visited);
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476 | }
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477 | }
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478 |
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479 | @Override
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480 | public void updatePosition() {
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481 | setBBox(null); // make sure that it is recalculated
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482 | setBBox(getBBox());
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483 | }
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484 |
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485 | @Override
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486 | void setDataset(DataSet dataSet) {
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487 | super.setDataset(dataSet);
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488 | checkMembers();
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489 | setBBox(null); // bbox might have changed if relation was in ds, was removed, modified, added back to dataset
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490 | }
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491 |
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492 | /**
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493 | * Checks that members are part of the same dataset, and that they're not deleted.
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494 | * @throws DataIntegrityProblemException if one the above conditions is not met
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495 | */
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496 | private void checkMembers() {
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497 | DataSet dataSet = getDataSet();
|
---|
498 | if (dataSet != null) {
|
---|
499 | RelationMember[] members = this.members;
|
---|
500 | for (RelationMember rm: members) {
|
---|
501 | if (rm.getMember().getDataSet() != dataSet)
|
---|
502 | throw new DataIntegrityProblemException(
|
---|
503 | String.format("Relation member must be part of the same dataset as relation(%s, %s)",
|
---|
504 | getPrimitiveId(), rm.getMember().getPrimitiveId()));
|
---|
505 | }
|
---|
506 | if (Config.getPref().getBoolean("debug.checkDeleteReferenced", true)) {
|
---|
507 | for (RelationMember rm: members) {
|
---|
508 | if (rm.getMember().isDeleted())
|
---|
509 | throw new DataIntegrityProblemException("Deleted member referenced: " + toString());
|
---|
510 | }
|
---|
511 | }
|
---|
512 | }
|
---|
513 | }
|
---|
514 |
|
---|
515 | /**
|
---|
516 | * Fires the {@code RelationMembersChangedEvent} to listeners.
|
---|
517 | * @throws DataIntegrityProblemException if members are not valid
|
---|
518 | * @see #checkMembers
|
---|
519 | */
|
---|
520 | private void fireMembersChanged() {
|
---|
521 | checkMembers();
|
---|
522 | if (getDataSet() != null) {
|
---|
523 | getDataSet().fireRelationMembersChanged(this);
|
---|
524 | }
|
---|
525 | }
|
---|
526 |
|
---|
527 | /**
|
---|
528 | * Determines if at least one child primitive is incomplete.
|
---|
529 | *
|
---|
530 | * @return true if at least one child primitive is incomplete
|
---|
531 | */
|
---|
532 | public boolean hasIncompleteMembers() {
|
---|
533 | RelationMember[] members = this.members;
|
---|
534 | for (RelationMember rm: members) {
|
---|
535 | if (rm.getMember().isIncomplete()) return true;
|
---|
536 | }
|
---|
537 | return false;
|
---|
538 | }
|
---|
539 |
|
---|
540 | /**
|
---|
541 | * Replies a collection with the incomplete children this relation refers to.
|
---|
542 | *
|
---|
543 | * @return the incomplete children. Empty collection if no children are incomplete.
|
---|
544 | */
|
---|
545 | public Collection<OsmPrimitive> getIncompleteMembers() {
|
---|
546 | Set<OsmPrimitive> ret = new HashSet<>();
|
---|
547 | RelationMember[] members = this.members;
|
---|
548 | for (RelationMember rm: members) {
|
---|
549 | if (!rm.getMember().isIncomplete()) {
|
---|
550 | continue;
|
---|
551 | }
|
---|
552 | ret.add(rm.getMember());
|
---|
553 | }
|
---|
554 | return ret;
|
---|
555 | }
|
---|
556 |
|
---|
557 | @Override
|
---|
558 | protected void keysChangedImpl(Map<String, String> originalKeys) {
|
---|
559 | super.keysChangedImpl(originalKeys);
|
---|
560 | for (OsmPrimitive member : getMemberPrimitivesList()) {
|
---|
561 | member.clearCachedStyle();
|
---|
562 | }
|
---|
563 | }
|
---|
564 |
|
---|
565 | @Override
|
---|
566 | public boolean concernsArea() {
|
---|
567 | return isMultipolygon() && hasAreaTags();
|
---|
568 | }
|
---|
569 |
|
---|
570 | @Override
|
---|
571 | public boolean isOutsideDownloadArea() {
|
---|
572 | return false;
|
---|
573 | }
|
---|
574 |
|
---|
575 | /**
|
---|
576 | * Returns the set of roles used in this relation.
|
---|
577 | * @return the set of roles used in this relation. Can be empty but never null
|
---|
578 | * @since 7556
|
---|
579 | */
|
---|
580 | public Set<String> getMemberRoles() {
|
---|
581 | Set<String> result = new HashSet<>();
|
---|
582 | for (RelationMember rm : members) {
|
---|
583 | String role = rm.getRole();
|
---|
584 | if (!role.isEmpty()) {
|
---|
585 | result.add(role);
|
---|
586 | }
|
---|
587 | }
|
---|
588 | return result;
|
---|
589 | }
|
---|
590 | }
|
---|