1 | package org.openstreetmap.josm.data.osm;
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2 |
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3 | /**
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4 | * A linkage class that can be used by an relation to keep a list of
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5 | * members. Since membership may be qualified by a "role", a simple
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6 | * list is not sufficient.
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7 | *
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8 | * @author Frederik Ramm <frederik@remote.org>
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9 | */
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10 | public class RelationMember {
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11 |
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12 | public String role;
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13 | public OsmPrimitive member;
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14 |
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15 | /**
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16 | *
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17 | * @return Role name or "". Never returns null
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18 | * @since 1930
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19 | */
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20 | public String getRole() {
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21 | if (role == null) {
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22 | return "";
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23 | } else {
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24 | return role;
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25 | }
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26 | }
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27 |
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28 | /**
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29 | *
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30 | * @return True if role is set
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31 | * @since 1930
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32 | */
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33 | public boolean hasRole() {
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34 | return role != null && !"".equals(role);
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35 | }
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36 |
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37 | /**
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38 | *
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39 | * @return True if member is relation
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40 | * @since 1937
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41 | */
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42 | public boolean isRelation() {
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43 | return member instanceof Relation;
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44 | }
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45 |
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46 | /**
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47 | *
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48 | * @return True if member is way
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49 | * @since 1937
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50 | */
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51 | public boolean isWay() {
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52 | return member instanceof Way;
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53 | }
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54 |
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55 | /**
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56 | *
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57 | * @return True if member is node
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58 | * @since 1937
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59 | */
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60 | public boolean isNode() {
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61 | return member instanceof Node;
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62 | }
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63 |
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64 | /**
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65 | *
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66 | * @return Member as relation
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67 | * @since 1937
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68 | */
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69 | public Relation getRelation() {
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70 | return (Relation)member;
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71 | }
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72 |
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73 | /**
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74 | *
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75 | * @return Member as way
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76 | * @since 1937
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77 | */
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78 | public Way getWay() {
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79 | return (Way)member;
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80 | }
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81 |
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82 | /**
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83 | *
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84 | * @return Member as node
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85 | * @since 1937
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86 | */
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87 | public Node getNode() {
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88 | return (Node)member;
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89 | }
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90 |
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91 | /**
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92 | *
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93 | * @return Member
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94 | * @since 1937
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95 | */
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96 | public OsmPrimitive getMember() {
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97 | return member;
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98 | }
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99 |
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100 |
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101 | /**
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102 | * Default constructor. Does nothing.
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103 | * @deprecated Use other constructors because RelationMember class will became immutable
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104 | * in the future
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105 | */
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106 | @Deprecated
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107 | public RelationMember() { }
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108 |
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109 | public RelationMember(String role, OsmPrimitive member) {
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110 | this.role = role;
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111 | this.member = member;
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112 | }
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113 |
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114 | /**
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115 | * Copy constructor.
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116 | * @param other relation member to be copied.
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117 | */
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118 | public RelationMember(RelationMember other) {
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119 | role = other.role;
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120 | member = other.member;
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121 | }
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122 |
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123 | @Override public String toString() {
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124 | return '"' + role + "\"=" + member;
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125 | }
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126 |
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127 | /**
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128 | * Replies true, if this relation member refers to the primitive
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129 | *
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130 | * @param primitive the primitive to check
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131 | * @return true, if this relation member refers to the primitive
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132 | */
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133 | public boolean refersTo(OsmPrimitive primitive) {
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134 | if (primitive == null) return false;
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135 | if (member == null) return false;
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136 | return member == primitive;
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137 | }
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138 |
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139 | @Override
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140 | public int hashCode() {
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141 | final int prime = 31;
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142 | int result = 1;
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143 | result = prime * result + ((member == null) ? 0 : member.hashCode());
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144 | result = prime * result + ((role == null) ? 0 : role.hashCode());
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145 | return result;
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146 | }
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147 |
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148 | @Override
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149 | public boolean equals(Object obj) {
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150 | if (this == obj)
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151 | return true;
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152 | if (obj == null)
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153 | return false;
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154 | if (getClass() != obj.getClass())
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155 | return false;
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156 | RelationMember other = (RelationMember) obj;
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157 | if (member == null) {
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158 | if (other.member != null)
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159 | return false;
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160 | } else if (!member.equals(other.member))
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161 | return false;
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162 | if (role == null) {
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163 | if (other.role != null)
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164 | return false;
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165 | } else if (!role.equals(other.role))
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166 | return false;
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167 | return true;
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168 | }
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169 | }
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