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.Arrays;
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5 | import java.util.Collection;
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6 | import java.util.Collections;
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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.Map;
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10 | import java.util.Optional;
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11 | import java.util.Set;
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12 | import java.util.stream.Collectors;
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13 | import java.util.stream.Stream;
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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 | * @since 343
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27 | */
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28 | public final class Relation extends OsmPrimitive implements IRelation<RelationMember> {
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29 |
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30 | static final UniqueIdGenerator idGenerator = new UniqueIdGenerator();
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31 |
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32 | private RelationMember[] members = new RelationMember[0];
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33 |
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34 | private BBox bbox;
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35 |
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36 | @Override
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37 | public List<RelationMember> getMembers() {
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38 | return new CopyList<>(members);
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39 | }
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40 |
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41 | @Override
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42 | public void setMembers(List<RelationMember> members) {
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43 | checkDatasetNotReadOnly();
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44 | boolean locked = writeLock();
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45 | try {
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46 | for (RelationMember rm : this.members) {
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47 | rm.getMember().removeReferrer(this);
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48 | rm.getMember().clearCachedStyle();
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49 | }
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50 |
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51 | if (members != null) {
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52 | this.members = members.toArray(new RelationMember[0]);
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53 | } else {
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54 | this.members = new RelationMember[0];
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55 | }
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56 | for (RelationMember rm : this.members) {
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57 | rm.getMember().addReferrer(this);
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58 | rm.getMember().clearCachedStyle();
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59 | }
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60 |
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61 | fireMembersChanged();
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62 | } finally {
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63 | writeUnlock(locked);
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64 | }
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65 | }
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66 |
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67 | @Override
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68 | public int getMembersCount() {
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69 | return members.length;
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70 | }
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71 |
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72 | @Override
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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 | /**
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78 | * Adds the specified relation member at the last position.
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79 | * @param member the member to add
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80 | */
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81 | public void addMember(RelationMember member) {
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82 | checkDatasetNotReadOnly();
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83 | boolean locked = writeLock();
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84 | try {
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85 | members = Utils.addInArrayCopy(members, member);
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86 | member.getMember().addReferrer(this);
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87 | member.getMember().clearCachedStyle();
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88 | fireMembersChanged();
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89 | } finally {
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90 | writeUnlock(locked);
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91 | }
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92 | }
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93 |
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94 | /**
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95 | * Adds the specified relation member at the specified index.
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96 | * @param member the member to add
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97 | * @param index the index at which the specified element is to be inserted
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98 | */
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99 | public void addMember(int index, RelationMember member) {
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100 | checkDatasetNotReadOnly();
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101 | boolean locked = writeLock();
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102 | try {
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103 | RelationMember[] newMembers = new RelationMember[members.length + 1];
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104 | System.arraycopy(members, 0, newMembers, 0, index);
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105 | System.arraycopy(members, index, newMembers, index + 1, members.length - index);
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106 | newMembers[index] = member;
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107 | members = newMembers;
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108 | member.getMember().addReferrer(this);
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109 | member.getMember().clearCachedStyle();
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110 | fireMembersChanged();
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111 | } finally {
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112 | writeUnlock(locked);
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113 | }
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114 | }
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115 |
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116 | /**
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117 | * Replace member at position specified by index.
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118 | * @param index index (positive integer)
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119 | * @param member relation member to set
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120 | * @return Member that was at the position
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121 | */
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122 | public RelationMember setMember(int index, RelationMember member) {
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123 | checkDatasetNotReadOnly();
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124 | boolean locked = writeLock();
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125 | try {
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126 | RelationMember originalMember = members[index];
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127 | members[index] = member;
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128 | if (originalMember.getMember() != member.getMember()) {
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129 | member.getMember().addReferrer(this);
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130 | member.getMember().clearCachedStyle();
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131 | originalMember.getMember().removeReferrer(this);
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132 | originalMember.getMember().clearCachedStyle();
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133 | fireMembersChanged();
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134 | }
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135 | return originalMember;
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136 | } finally {
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137 | writeUnlock(locked);
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138 | }
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139 | }
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140 |
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141 | /**
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142 | * Removes member at specified position.
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143 | * @param index index (positive integer)
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144 | * @return Member that was at the position
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145 | */
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146 | public RelationMember removeMember(int index) {
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147 | checkDatasetNotReadOnly();
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148 | boolean locked = writeLock();
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149 | try {
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150 | List<RelationMember> currentMembers = getMembers();
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151 | RelationMember result = currentMembers.remove(index);
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152 | setMembers(currentMembers);
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153 | return result;
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154 | } finally {
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155 | writeUnlock(locked);
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156 | }
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157 | }
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158 |
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159 | @Override
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160 | public long getMemberId(int idx) {
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161 | return members[idx].getUniqueId();
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162 | }
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163 |
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164 | @Override
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165 | public String getRole(int idx) {
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166 | return members[idx].getRole();
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167 | }
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168 |
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169 | @Override
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170 | public OsmPrimitiveType getMemberType(int idx) {
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171 | return members[idx].getType();
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172 | }
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173 |
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174 | @Override
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175 | public void accept(OsmPrimitiveVisitor visitor) {
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176 | visitor.visit(this);
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177 | }
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178 |
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179 | @Override
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180 | public void accept(PrimitiveVisitor visitor) {
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181 | visitor.visit(this);
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182 | }
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183 |
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184 | Relation(long id, boolean allowNegative) {
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185 | super(id, allowNegative);
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186 | }
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187 |
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188 | /**
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189 | * Create a new relation with id 0
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190 | */
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191 | public Relation() {
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192 | super(0, false);
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193 | }
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194 |
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195 | /**
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196 | * Constructs an identical clone of the argument and links members to it.
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197 | * See #19885 for possible memory leaks.
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198 | * @param clone The relation to clone
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199 | * @param clearMetadata If {@code true}, clears the OSM id and other metadata as defined by {@link #clearOsmMetadata}.
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200 | * If {@code false}, does nothing
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201 | * @param copyMembers whether to copy relation members too
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202 | * @since 16212
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203 | */
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204 | public Relation(Relation clone, boolean clearMetadata, boolean copyMembers) {
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205 | super(clone.getUniqueId(), true);
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206 | cloneFrom(clone, copyMembers);
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207 | if (clearMetadata) {
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208 | clearOsmMetadata();
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209 | }
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210 | }
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211 |
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212 | /**
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213 | * Constructs an identical clone of the argument and links members to it.
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214 | * See #19885 for possible memory leaks.
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215 | * @param clone The relation to clone
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216 | * @param clearMetadata If {@code true}, clears the OSM id and other metadata as defined by {@link #clearOsmMetadata}.
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217 | * If {@code false}, does nothing
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218 | */
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219 | public Relation(Relation clone, boolean clearMetadata) {
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220 | this(clone, clearMetadata, true);
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221 | }
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222 |
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223 | /**
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224 | * Create an identical clone of the argument (including the id) and links members to it.
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225 | * See #19885 for possible memory leaks.
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226 | * @param clone The relation to clone, including its id
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227 | */
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228 | public Relation(Relation clone) {
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229 | this(clone, false);
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230 | }
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231 |
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232 | /**
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233 | * Creates a new relation for the given id. If the id > 0, the way is marked
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234 | * as incomplete.
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235 | *
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236 | * @param id the id. > 0 required
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237 | * @throws IllegalArgumentException if id < 0
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238 | */
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239 | public Relation(long id) {
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240 | super(id, false);
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241 | }
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242 |
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243 | /**
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244 | * Creates new relation
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245 | * @param id the id
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246 | * @param version version number (positive integer)
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247 | */
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248 | public Relation(long id, int version) {
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249 | super(id, version, false);
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250 | }
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251 |
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252 | @Override
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253 | public void cloneFrom(OsmPrimitive osm, boolean copyMembers) {
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254 | if (!(osm instanceof Relation))
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255 | throw new IllegalArgumentException("Not a relation: " + osm);
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256 | boolean locked = writeLock();
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257 | try {
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258 | super.cloneFrom(osm, copyMembers);
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259 | if (copyMembers) {
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260 | // It's not necessary to clone members as RelationMember class is immutable
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261 | setMembers(((Relation) osm).getMembers());
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262 | }
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263 | } finally {
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264 | writeUnlock(locked);
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265 | }
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266 | }
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267 |
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268 | @Override
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269 | public void load(PrimitiveData data) {
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270 | if (!(data instanceof RelationData))
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271 | throw new IllegalArgumentException("Not a relation data: " + data);
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272 | boolean locked = writeLock();
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273 | try {
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274 | super.load(data);
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275 |
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276 | RelationData relationData = (RelationData) data;
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277 |
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278 | List<RelationMember> newMembers = relationData.getMembers().stream()
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279 | .map(member -> new RelationMember(member.getRole(), Optional
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280 | .ofNullable(getDataSet().getPrimitiveById(member))
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281 | .orElseThrow(() -> new AssertionError("Data consistency problem - relation with missing member detected"))))
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282 | .collect(Collectors.toList());
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283 | setMembers(newMembers);
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284 | } finally {
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285 | writeUnlock(locked);
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286 | }
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287 | }
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288 |
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289 | @Override
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290 | public RelationData save() {
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291 | RelationData data = new RelationData();
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292 | saveCommonAttributes(data);
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293 | for (RelationMember member:getMembers()) {
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294 | data.getMembers().add(new RelationMemberData(member.getRole(), member.getMember()));
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295 | }
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296 | return data;
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297 | }
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298 |
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299 | @Override
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300 | public String toString() {
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301 | StringBuilder result = new StringBuilder(32);
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302 | result.append("{Relation id=")
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303 | .append(getUniqueId())
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304 | .append(" version=")
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305 | .append(getVersion())
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306 | .append(' ')
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307 | .append(getFlagsAsString())
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308 | .append(" [");
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309 | for (RelationMember rm:getMembers()) {
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310 | result.append(OsmPrimitiveType.from(rm.getMember()))
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311 | .append(' ')
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312 | .append(rm.getMember().getUniqueId())
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313 | .append(", ");
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314 | }
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315 | result.delete(result.length()-2, result.length())
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316 | .append("]}");
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317 | return result.toString();
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318 | }
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319 |
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320 | @Override
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321 | public boolean hasEqualSemanticAttributes(OsmPrimitive other, boolean testInterestingTagsOnly) {
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322 | return (other instanceof Relation)
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323 | && hasEqualSemanticFlags(other)
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324 | && Arrays.equals(members, ((Relation) other).members)
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325 | && super.hasEqualSemanticAttributes(other, testInterestingTagsOnly);
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326 | }
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327 |
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328 | /**
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329 | * Returns the first member.
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330 | * @return first member, or {@code null}
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331 | */
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332 | public RelationMember firstMember() {
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333 | return (isIncomplete() || members.length == 0) ? null : members[0];
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334 | }
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335 |
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336 | /**
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337 | * Returns the last member.
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338 | * @return last member, or {@code null}
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339 | */
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340 | public RelationMember lastMember() {
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341 | return (isIncomplete() || members.length == 0) ? null : members[members.length - 1];
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342 | }
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343 |
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344 | /**
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345 | * removes all members with member.member == primitive
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346 | *
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347 | * @param primitive the primitive to check for
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348 | */
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349 | public void removeMembersFor(OsmPrimitive primitive) {
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350 | removeMembersFor(Collections.singleton(primitive));
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351 | }
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352 |
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353 | @Override
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354 | public void setDeleted(boolean deleted) {
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355 | boolean locked = writeLock();
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356 | try {
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357 | for (RelationMember rm:members) {
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358 | if (deleted) {
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359 | rm.getMember().removeReferrer(this);
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360 | } else {
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361 | rm.getMember().addReferrer(this);
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362 | }
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363 | }
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364 | super.setDeleted(deleted);
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365 | } finally {
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366 | writeUnlock(locked);
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367 | }
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368 | }
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369 |
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370 | /**
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371 | * Obtains all members with member.member == primitive
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372 | * @param primitives the primitives to check for
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373 | * @return all relation members for the given primitives
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374 | */
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375 | public Collection<RelationMember> getMembersFor(final Collection<? extends OsmPrimitive> primitives) {
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376 | return SubclassFilteredCollection.filter(getMembers(), member -> primitives.contains(member.getMember()));
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377 | }
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378 |
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379 | /**
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380 | * removes all members with member.member == primitive
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381 | *
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382 | * @param primitives the primitives to check for
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383 | * @since 5613
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384 | */
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385 | public void removeMembersFor(Collection<? extends OsmPrimitive> primitives) {
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386 | checkDatasetNotReadOnly();
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387 | if (Utils.isEmpty(primitives))
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388 | return;
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389 |
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390 | boolean locked = writeLock();
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391 | try {
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392 | List<RelationMember> currentMembers = getMembers();
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393 | currentMembers.removeAll(getMembersFor(primitives));
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394 | setMembers(currentMembers);
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395 | } finally {
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396 | writeUnlock(locked);
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397 | }
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398 | }
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399 |
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400 | /**
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401 | * Replies the set of {@link OsmPrimitive}s referred to by at least one member of this relation.
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402 | *
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403 | * @return the set of {@link OsmPrimitive}s referred to by at least one member of this relation
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404 | * @see #getMemberPrimitivesList()
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405 | */
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406 | public Set<OsmPrimitive> getMemberPrimitives() {
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407 | return getMembers().stream().map(RelationMember::getMember).collect(Collectors.toSet());
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408 | }
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409 |
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410 | /**
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411 | * Returns the {@link OsmPrimitive}s of the specified type referred to by at least one member of this relation.
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412 | * @param tClass the type of the primitive
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413 | * @param <T> the type of the primitive
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414 | * @return the primitives
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415 | */
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416 | public <T extends OsmPrimitive> Collection<T> getMemberPrimitives(Class<T> tClass) {
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417 | return Utils.filteredCollection(getMemberPrimitivesList(), tClass);
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418 | }
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419 |
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420 | /**
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421 | * Returns an unmodifiable list of the {@link OsmPrimitive}s referred to by at least one member of this relation.
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422 | * @return an unmodifiable list of the primitives
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423 | */
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424 | @Override
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425 | public List<OsmPrimitive> getMemberPrimitivesList() {
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426 | return Utils.transform(getMembers(), RelationMember::getMember);
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427 | }
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428 |
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429 | @Override
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430 | public List<OsmPrimitive> getChildren() {
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431 | return getMemberPrimitivesList();
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432 | }
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433 |
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434 | @Override
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435 | public OsmPrimitiveType getType() {
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436 | return OsmPrimitiveType.RELATION;
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437 | }
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438 |
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439 | @Override
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440 | public OsmPrimitiveType getDisplayType() {
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441 | return isMultipolygon() && !isBoundary() ? OsmPrimitiveType.MULTIPOLYGON : OsmPrimitiveType.RELATION;
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442 | }
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443 |
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444 | @Override
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445 | public BBox getBBox() {
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446 | if (getDataSet() != null && bbox != null) {
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447 | return this.bbox; // use cached immutable value
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448 | }
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449 |
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450 | BBox box = new BBox();
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451 | addToBBox(box, new HashSet<>());
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452 | if (getDataSet() == null) {
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453 | return box;
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454 | }
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455 | setBBox(box); // set cached immutable value
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456 | return this.bbox;
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457 | }
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458 |
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459 | private void setBBox(BBox bbox) {
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460 | this.bbox = bbox == null ? null : bbox.toImmutable();
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461 | }
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462 |
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463 | @Override
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464 | protected void addToBBox(BBox box, Set<PrimitiveId> visited) {
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465 | for (RelationMember rm : members) {
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466 | if (visited.add(rm.getMember()))
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467 | rm.getMember().addToBBox(box, visited);
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468 | }
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469 | }
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470 |
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471 | @Override
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472 | public void updatePosition() {
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473 | setBBox(null); // make sure that it is recalculated
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474 | setBBox(getBBox());
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475 | }
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476 |
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477 | @Override
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478 | void setDataset(DataSet dataSet) {
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479 | super.setDataset(dataSet);
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480 | checkMembers();
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481 | setBBox(null); // bbox might have changed if relation was in ds, was removed, modified, added back to dataset
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482 | }
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483 |
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484 | /**
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485 | * Checks that members are part of the same dataset, and that they're not deleted.
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486 | * @throws DataIntegrityProblemException if one the above conditions is not met
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487 | */
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488 | private void checkMembers() {
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489 | DataSet dataSet = getDataSet();
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490 | if (dataSet != null) {
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491 | for (RelationMember rm: members) {
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492 | if (rm.getMember().getDataSet() != dataSet)
|
---|
493 | throw new DataIntegrityProblemException(
|
---|
494 | String.format("Relation member must be part of the same dataset as relation(%s, %s)",
|
---|
495 | getPrimitiveId(), rm.getMember().getPrimitiveId()),
|
---|
496 | null, this, rm.getMember());
|
---|
497 | }
|
---|
498 | if (Config.getPref().getBoolean("debug.checkDeleteReferenced", true)) {
|
---|
499 | for (RelationMember rm: members) {
|
---|
500 | if (rm.getMember().isDeleted())
|
---|
501 | throw new DataIntegrityProblemException("Deleted member referenced: " + this, null, this, rm.getMember());
|
---|
502 | }
|
---|
503 | }
|
---|
504 | }
|
---|
505 | }
|
---|
506 |
|
---|
507 | /**
|
---|
508 | * Fires the {@code RelationMembersChangedEvent} to listeners.
|
---|
509 | * @throws DataIntegrityProblemException if members are not valid
|
---|
510 | * @see #checkMembers
|
---|
511 | */
|
---|
512 | private void fireMembersChanged() {
|
---|
513 | checkMembers();
|
---|
514 | if (getDataSet() != null) {
|
---|
515 | getDataSet().fireRelationMembersChanged(this);
|
---|
516 | }
|
---|
517 | }
|
---|
518 |
|
---|
519 | @Override
|
---|
520 | public boolean hasIncompleteMembers() {
|
---|
521 | return Arrays.stream(members).anyMatch(rm -> rm.getMember().isIncomplete());
|
---|
522 | }
|
---|
523 |
|
---|
524 | /**
|
---|
525 | * Replies a collection with the incomplete children this relation refers to.
|
---|
526 | *
|
---|
527 | * @return the incomplete children. Empty collection if no children are incomplete.
|
---|
528 | */
|
---|
529 | @Override
|
---|
530 | public Collection<OsmPrimitive> getIncompleteMembers() {
|
---|
531 | return Arrays.stream(members)
|
---|
532 | .map(RelationMember::getMember)
|
---|
533 | .filter(OsmPrimitive::isIncomplete)
|
---|
534 | .collect(Collectors.toSet());
|
---|
535 | }
|
---|
536 |
|
---|
537 | @Override
|
---|
538 | protected void keysChangedImpl(Map<String, String> originalKeys) {
|
---|
539 | super.keysChangedImpl(originalKeys);
|
---|
540 | for (OsmPrimitive member : getMemberPrimitivesList()) {
|
---|
541 | member.clearCachedStyle();
|
---|
542 | }
|
---|
543 | }
|
---|
544 |
|
---|
545 | @Override
|
---|
546 | public boolean concernsArea() {
|
---|
547 | return isMultipolygon() && hasAreaTags();
|
---|
548 | }
|
---|
549 |
|
---|
550 | @Override
|
---|
551 | public boolean isOutsideDownloadArea() {
|
---|
552 | return false;
|
---|
553 | }
|
---|
554 |
|
---|
555 | /**
|
---|
556 | * Returns the set of roles used in this relation.
|
---|
557 | * @return the set of roles used in this relation. Can be empty but never null
|
---|
558 | * @since 7556
|
---|
559 | */
|
---|
560 | public Set<String> getMemberRoles() {
|
---|
561 | return Stream.of(members).map(RelationMember::getRole).filter(role -> !role.isEmpty()).collect(Collectors.toSet());
|
---|
562 | }
|
---|
563 |
|
---|
564 | @Override
|
---|
565 | public List<? extends OsmPrimitive> findRelationMembers(String role) {
|
---|
566 | return IRelation.super.findRelationMembers(role).stream()
|
---|
567 | .filter(OsmPrimitive.class::isInstance)
|
---|
568 | .map(OsmPrimitive.class::cast).collect(Collectors.toList());
|
---|
569 | }
|
---|
570 |
|
---|
571 | @Override
|
---|
572 | public UniqueIdGenerator getIdGenerator() {
|
---|
573 | return idGenerator;
|
---|
574 | }
|
---|
575 | }
|
---|