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.visitor.Visitor;
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10 | import org.openstreetmap.josm.tools.CopyList;
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11 |
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12 | /**
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13 | * An relation, having a set of tags and any number (0...n) of members.
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14 | *
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15 | * @author Frederik Ramm <frederik@remote.org>
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16 | */
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17 | public final class Relation extends OsmPrimitive {
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18 |
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19 | /**
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20 | * All members of this relation. Note that after changing this,
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21 | * makeBackReferences and/or removeBackReferences should be called.
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22 | *
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23 | */
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24 | private final List<RelationMember> members = new ArrayList<RelationMember>();
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25 |
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26 | /**
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27 | * @return Members of the relation. Changes made in returned list are not mapped
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28 | * back to the primitive, use setMembers() to modify the members
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29 | * @since 1925
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30 | */
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31 | public List<RelationMember> getMembers() {
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32 | return new CopyList<RelationMember>(members.toArray(new RelationMember[members.size()]));
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33 | }
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34 |
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35 | /**
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36 | *
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37 | * @param members Can be null, in that case all members are removed
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38 | * @since 1925
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39 | */
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40 | public void setMembers(List<RelationMember> members) {
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41 | for (RelationMember rm:this.members) {
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42 | rm.getMember().removeReferrer(this);
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43 | }
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44 |
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45 | this.members.clear();
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46 | if (members != null) {
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47 | this.members.addAll(members);
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48 | }
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49 | for (RelationMember rm:this.members) {
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50 | rm.getMember().addReferrer(this);
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51 | }
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52 |
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53 | fireMembersChanged();
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54 | }
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55 |
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56 | /**
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57 | *
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58 | * @since 1926
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59 | */
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60 | public int getMembersCount() {
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61 | return members.size();
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62 | }
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63 |
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64 | /**
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65 | *
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66 | * @param index
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67 | * @return
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68 | * @since 1926
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69 | */
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70 | public RelationMember getMember(int index) {
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71 | return members.get(index);
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72 | }
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73 |
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74 | /**
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75 | *
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76 | * @param member
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77 | * @since 1951
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78 | */
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79 | public void addMember(RelationMember member) {
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80 | members.add(member);
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81 | member.getMember().addReferrer(this);
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82 | fireMembersChanged();
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83 | }
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84 |
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85 | /**
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86 | *
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87 | * @param index
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88 | * @param member
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89 | * @since 1951
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90 | */
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91 | public void addMember(int index, RelationMember member) {
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92 | members.add(index, member);
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93 | member.getMember().addReferrer(this);
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94 | fireMembersChanged();
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95 | }
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96 |
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97 | /**
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98 | * Replace member at position specified by index.
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99 | * @param index
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100 | * @param member
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101 | * @return Member that was at the position
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102 | * @since 1951
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103 | */
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104 | public RelationMember setMember(int index, RelationMember member) {
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105 | RelationMember result = members.set(index, member);
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106 | if (result.getMember() != member.getMember()) {
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107 | member.getMember().addReferrer(this);
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108 | result.getMember().removeReferrer(this);
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109 | fireMembersChanged();
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110 | }
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111 | return result;
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112 | }
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113 |
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114 | /**
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115 | * Removes member at specified position.
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116 | * @param index
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117 | * @return Member that was at the position
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118 | * @since 1951
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119 | */
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120 | public RelationMember removeMember(int index) {
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121 | RelationMember result = members.remove(index);
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122 | for (RelationMember rm:members) {
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123 | // Do not remove referrer if this primitive is used in relation twice
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124 | if (rm.getMember() == result.getMember())
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125 | return result;
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126 | }
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127 | result.getMember().removeReferrer(this);
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128 | fireMembersChanged();
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129 | return result;
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130 | }
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131 |
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132 | @Override public void visit(Visitor visitor) {
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133 | visitor.visit(this);
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134 | }
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135 |
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136 | protected Relation(long id, boolean allowNegative) {
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137 | super(id, allowNegative);
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138 | }
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139 |
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140 | /**
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141 | * Create a new relation with id 0
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142 | */
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143 | public Relation() {
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144 | super(0, false);
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145 | }
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146 |
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147 | public Relation(Relation clone, boolean clearId) {
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148 | super(clone.getUniqueId(), true);
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149 | cloneFrom(clone);
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150 | if (clearId) {
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151 | clearOsmId();
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152 | }
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153 | }
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154 |
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155 | /**
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156 | * Create an identical clone of the argument (including the id)
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157 | */
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158 | public Relation(Relation clone) {
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159 | this(clone, false);
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160 | }
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161 |
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162 | /**
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163 | * Creates a new relation for the given id. If the id > 0, the way is marked
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164 | * as incomplete.
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165 | *
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166 | * @param id the id. > 0 required
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167 | * @throws IllegalArgumentException thrown if id < 0
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168 | */
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169 | public Relation(long id) throws IllegalArgumentException {
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170 | super(id, false);
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171 | }
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172 |
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173 | @Override public void cloneFrom(OsmPrimitive osm) {
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174 | super.cloneFrom(osm);
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175 | // It's not necessary to clone members as RelationMember class is immutable
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176 | setMembers(((Relation)osm).getMembers());
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177 | }
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178 |
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179 | @Override public void load(PrimitiveData data) {
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180 | super.load(data);
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181 |
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182 | RelationData relationData = (RelationData) data;
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183 |
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184 | List<RelationMember> newMembers = new ArrayList<RelationMember>();
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185 | for (RelationMemberData member : relationData.getMembers()) {
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186 | OsmPrimitive primitive = getDataSet().getPrimitiveById(member);
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187 | if (primitive == null)
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188 | throw new AssertionError("Data consistency problem - relation with missing member detected");
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189 | newMembers.add(new RelationMember(member.getRole(), primitive));
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190 | }
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191 | setMembers(newMembers);
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192 | }
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193 |
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194 | @Override public RelationData save() {
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195 | RelationData data = new RelationData();
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196 | saveCommonAttributes(data);
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197 | for (RelationMember member:getMembers()) {
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198 | data.getMembers().add(new RelationMemberData(member.getRole(), member.getMember()));
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199 | }
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200 | return data;
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201 | }
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202 |
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203 | @Override public String toString() {
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204 | StringBuilder result = new StringBuilder();
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205 | result.append("{Relation id=");
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206 | result.append(getUniqueId());
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207 | result.append(" version=");
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208 | result.append(getVersion());
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209 | result.append(" [");
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210 | for (RelationMember rm:getMembers()) {
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211 | result.append(OsmPrimitiveType.from(rm.getMember()));
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212 | result.append(" ");
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213 | result.append(rm.getMember().getUniqueId());
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214 | result.append(", ");
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215 | }
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216 | result.delete(result.length()-2, result.length());
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217 | result.append("]");
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218 | result.append("}");
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219 | return result.toString();
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220 | }
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221 |
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222 | @Override
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223 | public boolean hasEqualSemanticAttributes(OsmPrimitive other) {
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224 | if (other == null || ! (other instanceof Relation) )
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225 | return false;
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226 | if (! super.hasEqualSemanticAttributes(other))
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227 | return false;
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228 | Relation r = (Relation)other;
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229 | return members.equals(r.members);
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230 | }
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231 |
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232 | public int compareTo(OsmPrimitive o) {
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233 | return o instanceof Relation ? Long.valueOf(getUniqueId()).compareTo(o.getUniqueId()) : -1;
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234 | }
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235 |
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236 | // seems to be different from member "incomplete" - FIXME
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237 | public boolean isIncomplete() {
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238 | for (RelationMember m : members)
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239 | if (m.getMember() == null)
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240 | return true;
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241 | return false;
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242 | }
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243 |
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244 | public RelationMember firstMember() {
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245 | if (incomplete) return null;
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246 | return (members.size() == 0) ? null : members.get(0);
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247 | }
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248 | public RelationMember lastMember() {
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249 | if (incomplete) return null;
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250 | return (members.size() == 0) ? null : members.get(members.size() -1);
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251 | }
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252 |
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253 | /**
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254 | * removes all members with member.member == primitive
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255 | *
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256 | * @param primitive the primitive to check for
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257 | */
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258 | public void removeMembersFor(OsmPrimitive primitive) {
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259 | if (primitive == null)
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260 | return;
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261 |
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262 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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263 | for (RelationMember member: members) {
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264 | if (member.getMember() == primitive) {
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265 | todelete.add(member);
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266 | }
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267 | }
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268 | primitive.removeReferrer(this);
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269 | members.removeAll(todelete);
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270 | fireMembersChanged();
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271 | }
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272 |
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273 | @Override
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274 | public void setDeleted(boolean deleted) {
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275 | for (RelationMember rm:members) {
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276 | if (deleted) {
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277 | rm.getMember().removeReferrer(this);
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278 | } else {
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279 | rm.getMember().addReferrer(this);
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280 | }
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281 | }
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282 | super.setDeleted(deleted);
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283 | }
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284 |
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285 | /**
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286 | * removes all members with member.member == primitive
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287 | *
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288 | * @param primitives the primitives to check for
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289 | */
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290 | public void removeMembersFor(Collection<OsmPrimitive> primitives) {
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291 | if (primitives == null || primitives.isEmpty())
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292 | return;
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293 |
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294 | ArrayList<RelationMember> todelete = new ArrayList<RelationMember>();
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295 | for (RelationMember member: members) {
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296 | if (primitives.contains(member.getMember())) {
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297 | todelete.add(member);
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298 | }
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299 | }
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300 | members.removeAll(todelete);
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301 | for (OsmPrimitive primitive:primitives) {
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302 | primitive.removeReferrer(this);
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303 | }
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304 | fireMembersChanged();
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305 | }
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306 |
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307 | @Override
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308 | public String getDisplayName(NameFormatter formatter) {
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309 | return formatter.format(this);
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310 | }
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311 |
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312 | /**
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313 | * Replies the set of {@see OsmPrimitive}s referred to by at least one
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314 | * member of this relation
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315 | *
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316 | * @return the set of {@see OsmPrimitive}s referred to by at least one
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317 | * member of this relation
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318 | */
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319 | public Set<OsmPrimitive> getMemberPrimitives() {
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320 | HashSet<OsmPrimitive> ret = new HashSet<OsmPrimitive>();
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321 | for (RelationMember m: members) {
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322 | if (m.getMember() != null) {
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323 | ret.add(m.getMember());
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324 | }
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325 | }
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326 | return ret;
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327 | }
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328 |
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329 | public OsmPrimitiveType getType() {
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330 | return OsmPrimitiveType.RELATION;
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331 | }
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332 |
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333 | @Override
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334 | public BBox getBBox() {
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335 | return new BBox(0, 0, 0, 0);
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336 | }
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337 |
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338 | @Override
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339 | public void updatePosition() {
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340 | // Do nothing for now
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341 | }
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342 |
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343 | private void fireMembersChanged() {
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344 | if (getDataSet() != null) {
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345 | getDataSet().fireRelationMembersChanged(this);
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346 | }
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347 | }
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348 | }
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