1 | package org.openstreetmap.josm.data.osm;
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2 |
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3 | import java.util.ArrayList;
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4 | import java.util.Collection;
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5 | import java.util.HashSet;
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6 | import java.util.List;
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7 | import java.util.Set;
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8 |
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9 | import org.openstreetmap.josm.data.osm.QuadBuckets.BBox;
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10 | import org.openstreetmap.josm.data.osm.visitor.Visitor;
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11 | import org.openstreetmap.josm.tools.CopyList;
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12 |
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13 | /**
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14 | * An relation, having a set of tags and any number (0...n) of members.
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15 | *
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16 | * @author Frederik Ramm <frederik@remote.org>
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17 | */
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18 | public final class Relation extends OsmPrimitive {
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19 |
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20 | /**
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21 | * All members of this relation. Note that after changing this,
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22 | * makeBackReferences and/or removeBackReferences should be called.
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23 | *
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24 | */
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25 | private final List<RelationMember> members = new ArrayList<RelationMember>();
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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.toArray(new RelationMember[members.size()]));
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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 | for (RelationMember rm:this.members) {
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43 | rm.getMember().removeReferrer(this);
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44 | }
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45 |
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46 | this.members.clear();
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47 | if (members != null) {
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48 | this.members.addAll(members);
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49 | }
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50 | for (RelationMember rm:this.members) {
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51 | rm.getMember().addReferrer(this);
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52 | }
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53 |
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54 | fireMembersChanged();
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55 | }
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56 |
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57 | /**
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58 | *
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59 | * @since 1926
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60 | */
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61 | public int getMembersCount() {
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62 | return members.size();
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63 | }
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64 |
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65 | /**
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66 | *
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67 | * @param index
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68 | * @return
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69 | * @since 1926
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70 | */
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71 | public RelationMember getMember(int index) {
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72 | return members.get(index);
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73 | }
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74 |
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75 | /**
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76 | *
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77 | * @param member
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78 | * @since 1951
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79 | */
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80 | public void addMember(RelationMember member) {
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81 | members.add(member);
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82 | member.getMember().addReferrer(this);
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83 | fireMembersChanged();
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84 | }
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85 |
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86 | /**
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87 | *
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88 | * @param index
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89 | * @param member
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90 | * @since 1951
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91 | */
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92 | public void addMember(int index, RelationMember member) {
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93 | members.add(index, member);
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94 | member.getMember().addReferrer(this);
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95 | fireMembersChanged();
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96 | }
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97 |
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98 | /**
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99 | * Replace member at position specified by index.
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100 | * @param index
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101 | * @param member
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102 | * @return Member that was at the position
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103 | * @since 1951
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104 | */
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105 | public RelationMember setMember(int index, RelationMember member) {
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106 | RelationMember result = members.set(index, member);
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107 | if (result.getMember() != member.getMember()) {
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108 | member.getMember().addReferrer(this);
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109 | result.getMember().removeReferrer(this);
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110 | fireMembersChanged();
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111 | }
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112 | return result;
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113 | }
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114 |
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115 | /**
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116 | * Removes member at specified position.
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117 | * @param index
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118 | * @return Member that was at the position
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119 | * @since 1951
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120 | */
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121 | public RelationMember removeMember(int index) {
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122 | RelationMember result = members.remove(index);
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123 | for (RelationMember rm:members) {
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124 | // Do not remove referrer if this primitive is used in relation twice
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125 | if (rm.getMember() == result.getMember())
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126 | return result;
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127 | }
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128 | result.getMember().removeReferrer(this);
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129 | fireMembersChanged();
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130 | return result;
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131 | }
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132 |
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133 | @Override public void visit(Visitor visitor) {
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134 | visitor.visit(this);
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135 | }
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136 |
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137 | protected Relation(long id, boolean allowNegative) {
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138 | super(id, allowNegative);
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139 | }
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140 |
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141 | /**
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142 | * Create a new relation with id 0
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143 | */
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144 | public Relation() {
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145 | super(0, false);
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146 | }
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147 |
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148 | public Relation(Relation clone, boolean clearId) {
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149 | super(clone.getUniqueId(), true);
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150 | cloneFrom(clone);
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151 | if (clearId) {
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152 | clearOsmId();
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153 | }
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154 | }
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155 |
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156 | /**
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157 | * Create an identical clone of the argument (including the id)
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158 | */
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159 | public Relation(Relation clone) {
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160 | this(clone, false);
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161 | }
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162 |
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163 | /**
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164 | * Creates a new relation for the given id. If the id > 0, the way is marked
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165 | * as incomplete.
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166 | *
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167 | * @param id the id. > 0 required
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168 | * @throws IllegalArgumentException thrown if id < 0
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169 | */
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170 | public Relation(long id) throws IllegalArgumentException {
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171 | super(id, false);
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172 | }
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173 |
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174 | @Override public void cloneFrom(OsmPrimitive osm) {
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175 | super.cloneFrom(osm);
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176 | // It's not necessary to clone members as RelationMember class is immutable
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177 | setMembers(((Relation)osm).getMembers());
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178 | }
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179 |
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180 | @Override public void load(PrimitiveData data) {
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181 | super.load(data);
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182 |
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183 | RelationData relationData = (RelationData) data;
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184 |
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185 | List<RelationMember> newMembers = new ArrayList<RelationMember>();
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186 | for (RelationMemberData member : relationData.getMembers()) {
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187 | OsmPrimitive primitive = getDataSet().getPrimitiveById(member);
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188 | if (primitive == null)
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189 | throw new AssertionError("Data consistency problem - relation with missing member detected");
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190 | newMembers.add(new RelationMember(member.getRole(), primitive));
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191 | }
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192 | setMembers(newMembers);
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193 | }
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194 |
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195 | @Override public RelationData save() {
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196 | RelationData data = new RelationData();
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197 | saveCommonAttributes(data);
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198 | for (RelationMember member:getMembers()) {
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199 | data.getMembers().add(new RelationMemberData(member.getRole(), member.getMember()));
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200 | }
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201 | return data;
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202 | }
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203 |
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204 | @Override public String toString() {
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205 | StringBuilder result = new StringBuilder();
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206 | result.append("{Relation id=");
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207 | result.append(getUniqueId());
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208 | result.append(" version=");
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209 | result.append(getVersion());
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210 | result.append(" [");
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211 | for (RelationMember rm:getMembers()) {
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212 | result.append(OsmPrimitiveType.from(rm.getMember()));
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213 | result.append(" ");
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214 | result.append(rm.getMember().getUniqueId());
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215 | result.append(", ");
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216 | }
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217 | result.delete(result.length()-2, result.length());
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218 | result.append("]");
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219 | result.append("}");
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220 | return result.toString();
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221 | }
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222 |
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223 | @Override
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224 | public boolean hasEqualSemanticAttributes(OsmPrimitive other) {
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225 | if (other == null || ! (other instanceof Relation) )
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226 | return false;
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227 | if (! super.hasEqualSemanticAttributes(other))
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228 | return false;
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229 | Relation r = (Relation)other;
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230 | return members.equals(r.members);
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231 | }
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232 |
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233 | public int compareTo(OsmPrimitive o) {
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234 | return o instanceof Relation ? Long.valueOf(getId()).compareTo(o.getId()) : -1;
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235 | }
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236 |
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237 | // seems to be different from member "incomplete" - FIXME
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238 | public boolean isIncomplete() {
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239 | for (RelationMember m : members)
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240 | if (m.getMember() == null)
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241 | return true;
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242 | return false;
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243 | }
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244 |
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245 | public RelationMember firstMember() {
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246 | if (incomplete) return null;
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247 | return (members.size() == 0) ? null : members.get(0);
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248 | }
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249 | public RelationMember lastMember() {
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250 | if (incomplete) return null;
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251 | return (members.size() == 0) ? null : members.get(members.size() -1);
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252 | }
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253 |
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254 | /**
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255 | * removes all members with member.member == primitive
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256 | *
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257 | * @param primitive the primitive to check for
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258 | */
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259 | public void removeMembersFor(OsmPrimitive primitive) {
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260 | if (primitive == null)
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261 | return;
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262 |
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263 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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264 | for (RelationMember member: members) {
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265 | if (member.getMember() == primitive) {
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266 | todelete.add(member);
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267 | }
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268 | }
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269 | primitive.removeReferrer(this);
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270 | members.removeAll(todelete);
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271 | fireMembersChanged();
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272 | }
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273 |
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274 | @Override
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275 | public void setDeleted(boolean deleted) {
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276 | for (RelationMember rm:members) {
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277 | if (deleted) {
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278 | rm.getMember().removeReferrer(this);
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279 | } else {
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280 | rm.getMember().addReferrer(this);
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281 | }
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282 | }
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283 | super.setDeleted(deleted);
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284 | }
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285 |
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286 |
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287 | /**
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288 | * removes all members with member.member == primitive
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289 | *
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290 | * @param primitives the primitives to check for
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291 | */
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292 | public void removeMembersFor(Collection<OsmPrimitive> primitives) {
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293 | if (primitives == null || primitives.isEmpty())
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294 | return;
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295 |
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296 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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297 | for (RelationMember member: members) {
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298 | if (primitives.contains(member.getMember())) {
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299 | todelete.add(member);
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300 | }
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301 | }
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302 | members.removeAll(todelete);
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303 | for (OsmPrimitive primitive:primitives) {
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304 | primitive.removeReferrer(this);
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305 | }
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306 | fireMembersChanged();
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307 | }
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308 |
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309 | @Override
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310 | public String getDisplayName(NameFormatter formatter) {
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311 | return formatter.format(this);
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312 | }
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313 |
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314 | /**
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315 | * Replies the set of {@see OsmPrimitive}s referred to by at least one
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316 | * member of this relation
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317 | *
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318 | * @return the set of {@see OsmPrimitive}s referred to by at least one
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319 | * member of this relation
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320 | */
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321 | public Set<OsmPrimitive> getMemberPrimitives() {
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322 | HashSet<OsmPrimitive> ret = new HashSet<OsmPrimitive>();
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323 | for (RelationMember m: members) {
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324 | if (m.getMember() != null) {
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325 | ret.add(m.getMember());
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326 | }
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327 | }
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328 | return ret;
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329 | }
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330 |
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331 | public OsmPrimitiveType getType() {
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332 | return OsmPrimitiveType.RELATION;
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333 | }
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334 |
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335 | @Override
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336 | public BBox getBBox() {
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337 | return new BBox(0, 0, 0, 0);
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338 | }
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339 |
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340 | @Override
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341 | public void updatePosition() {
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342 | // Do nothing for now
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343 | }
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344 |
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345 | private void fireMembersChanged() {
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346 | if (getDataSet() != null) {
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347 | getDataSet().fireRelationMembersChanged(this);
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348 | }
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349 | }
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350 | }
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