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 static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.text.MessageFormat;
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7 | import java.util.Arrays;
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8 | import java.util.Collection;
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9 | import java.util.Collections;
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10 | import java.util.Date;
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11 | import java.util.HashSet;
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12 | import java.util.Map;
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13 | import java.util.Map.Entry;
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14 | import java.util.Objects;
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15 | import java.util.Set;
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16 | import java.util.concurrent.TimeUnit;
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17 | import java.util.concurrent.atomic.AtomicLong;
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18 |
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19 | import org.openstreetmap.josm.tools.LanguageInfo;
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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 | * Abstract class to represent common features of the datatypes primitives.
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24 | *
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25 | * @since 4099
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26 | */
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27 | public abstract class AbstractPrimitive implements IPrimitive {
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28 |
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29 | /**
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30 | * This is a visitor that can be used to loop over the keys/values of this primitive.
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31 | *
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32 | * @author Michael Zangl
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33 | * @since 8742
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34 | * @since 10600 (functional interface)
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35 | */
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36 | @FunctionalInterface
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37 | public interface KeyValueVisitor {
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38 |
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39 | /**
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40 | * This method gets called for every tag received.
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41 | *
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42 | * @param primitive This primitive
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43 | * @param key The key
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44 | * @param value The value
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45 | */
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46 | void visitKeyValue(AbstractPrimitive primitive, String key, String value);
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47 | }
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48 |
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49 | private static final AtomicLong idCounter = new AtomicLong(0);
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50 |
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51 | static long generateUniqueId() {
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52 | return idCounter.decrementAndGet();
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53 | }
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54 |
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55 | /**
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56 | * This flag shows, that the properties have been changed by the user
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57 | * and on upload the object will be send to the server.
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58 | */
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59 | protected static final short FLAG_MODIFIED = 1 << 0;
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60 |
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61 | /**
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62 | * This flag is false, if the object is marked
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63 | * as deleted on the server.
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64 | */
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65 | protected static final short FLAG_VISIBLE = 1 << 1;
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66 |
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67 | /**
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68 | * An object that was deleted by the user.
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69 | * Deleted objects are usually hidden on the map and a request
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70 | * for deletion will be send to the server on upload.
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71 | * An object usually cannot be deleted if it has non-deleted
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72 | * objects still referring to it.
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73 | */
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74 | protected static final short FLAG_DELETED = 1 << 2;
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75 |
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76 | /**
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77 | * A primitive is incomplete if we know its id and type, but nothing more.
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78 | * Typically some members of a relation are incomplete until they are
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79 | * fetched from the server.
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80 | */
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81 | protected static final short FLAG_INCOMPLETE = 1 << 3;
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82 |
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83 | /**
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84 | * An object can be disabled by the filter mechanism.
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85 | * Then it will show in a shade of gray on the map or it is completely
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86 | * hidden from the view.
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87 | * Disabled objects usually cannot be selected or modified
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88 | * while the filter is active.
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89 | */
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90 | protected static final short FLAG_DISABLED = 1 << 4;
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91 |
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92 | /**
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93 | * This flag is only relevant if an object is disabled by the
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94 | * filter mechanism (i.e. FLAG_DISABLED is set).
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95 | * Then it indicates, whether it is completely hidden or
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96 | * just shown in gray color.
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97 | *
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98 | * When the primitive is not disabled, this flag should be
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99 | * unset as well (for efficient access).
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100 | */
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101 | protected static final short FLAG_HIDE_IF_DISABLED = 1 << 5;
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102 |
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103 | /**
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104 | * Flag used internally by the filter mechanism.
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105 | */
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106 | protected static final short FLAG_DISABLED_TYPE = 1 << 6;
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107 |
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108 | /**
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109 | * Flag used internally by the filter mechanism.
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110 | */
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111 | protected static final short FLAG_HIDDEN_TYPE = 1 << 7;
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112 |
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113 | /**
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114 | * This flag is set if the primitive is a way and
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115 | * according to the tags, the direction of the way is important.
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116 | * (e.g. one way street.)
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117 | */
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118 | protected static final short FLAG_HAS_DIRECTIONS = 1 << 8;
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119 |
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120 | /**
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121 | * If the primitive is tagged.
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122 | * Some trivial tags like source=* are ignored here.
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123 | */
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124 | protected static final short FLAG_TAGGED = 1 << 9;
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125 |
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126 | /**
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127 | * This flag is only relevant if FLAG_HAS_DIRECTIONS is set.
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128 | * It shows, that direction of the arrows should be reversed.
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129 | * (E.g. oneway=-1.)
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130 | */
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131 | protected static final short FLAG_DIRECTION_REVERSED = 1 << 10;
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132 |
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133 | /**
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134 | * When hovering over ways and nodes in add mode, the
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135 | * "target" objects are visually highlighted. This flag indicates
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136 | * that the primitive is currently highlighted.
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137 | */
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138 | protected static final short FLAG_HIGHLIGHTED = 1 << 11;
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139 |
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140 | /**
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141 | * If the primitive is annotated with a tag such as note, fixme, etc.
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142 | * Match the "work in progress" tags in default map style.
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143 | */
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144 | protected static final short FLAG_ANNOTATED = 1 << 12;
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145 |
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146 | /**
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147 | * Put several boolean flags to one short int field to save memory.
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148 | * Other bits of this field are used in subclasses.
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149 | */
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150 | protected volatile short flags = FLAG_VISIBLE; // visible per default
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151 |
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152 | /*-------------------
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153 | * OTHER PROPERTIES
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154 | *-------------------*/
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155 |
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156 | /**
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157 | * Unique identifier in OSM. This is used to identify objects on the server.
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158 | * An id of 0 means an unknown id. The object has not been uploaded yet to
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159 | * know what id it will get.
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160 | */
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161 | protected long id;
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162 |
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163 | /**
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164 | * User that last modified this primitive, as specified by the server.
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165 | * Never changed by JOSM.
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166 | */
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167 | protected User user;
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168 |
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169 | /**
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170 | * Contains the version number as returned by the API. Needed to
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171 | * ensure update consistency
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172 | */
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173 | protected int version;
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174 |
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175 | /**
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176 | * The id of the changeset this primitive was last uploaded to.
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177 | * 0 if it wasn't uploaded to a changeset yet of if the changeset
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178 | * id isn't known.
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179 | */
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180 | protected int changesetId;
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181 |
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182 | protected int timestamp;
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183 |
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184 | /**
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185 | * Get and write all attributes from the parameter. Does not fire any listener, so
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186 | * use this only in the data initializing phase
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187 | * @param other the primitive to clone data from
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188 | */
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189 | public void cloneFrom(AbstractPrimitive other) {
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190 | setKeys(other.getKeys());
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191 | id = other.id;
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192 | if (id <= 0) {
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193 | // reset version and changeset id
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194 | version = 0;
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195 | changesetId = 0;
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196 | }
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197 | timestamp = other.timestamp;
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198 | if (id > 0) {
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199 | version = other.version;
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200 | }
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201 | flags = other.flags;
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202 | user = other.user;
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203 | if (id > 0 && other.changesetId > 0) {
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204 | // #4208: sometimes we cloned from other with id < 0 *and*
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205 | // an assigned changeset id. Don't know why yet. For primitives
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206 | // with id < 0 we don't propagate the changeset id any more.
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207 | //
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208 | setChangesetId(other.changesetId);
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209 | }
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210 | }
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211 |
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212 | @Override
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213 | public int getVersion() {
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214 | return version;
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215 | }
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216 |
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217 | @Override
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218 | public long getId() {
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219 | long id = this.id;
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220 | return id >= 0 ? id : 0;
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221 | }
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222 |
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223 | /**
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224 | * Gets a unique id representing this object.
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225 | *
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226 | * @return Osm id if primitive already exists on the server. Unique negative value if primitive is new
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227 | */
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228 | @Override
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229 | public long getUniqueId() {
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230 | return id;
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231 | }
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232 |
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233 | /**
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234 | * Determines if this primitive is new.
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235 | * @return {@code true} if this primitive is new (not yet uploaded the server, id <= 0)
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236 | */
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237 | @Override
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238 | public boolean isNew() {
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239 | return id <= 0;
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240 | }
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241 |
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242 | @Override
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243 | public boolean isNewOrUndeleted() {
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244 | return isNew() || ((flags & (FLAG_VISIBLE + FLAG_DELETED)) == 0);
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245 | }
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246 |
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247 | @Override
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248 | public void setOsmId(long id, int version) {
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249 | if (id <= 0)
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250 | throw new IllegalArgumentException(tr("ID > 0 expected. Got {0}.", id));
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251 | if (version <= 0)
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252 | throw new IllegalArgumentException(tr("Version > 0 expected. Got {0}.", version));
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253 | this.id = id;
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254 | this.version = version;
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255 | this.setIncomplete(false);
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256 | }
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257 |
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258 | /**
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259 | * Clears the metadata, including id and version known to the OSM API.
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260 | * The id is a new unique id. The version, changeset and timestamp are set to 0.
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261 | * incomplete and deleted are set to false. It's preferred to use copy constructor with clearMetadata set to true instead
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262 | * of calling this method.
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263 | * @since 6140
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264 | */
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265 | public void clearOsmMetadata() {
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266 | // Not part of dataset - no lock necessary
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267 | this.id = generateUniqueId();
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268 | this.version = 0;
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269 | this.user = null;
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270 | this.changesetId = 0; // reset changeset id on a new object
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271 | this.timestamp = 0;
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272 | this.setIncomplete(false);
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273 | this.setDeleted(false);
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274 | this.setVisible(true);
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275 | }
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276 |
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277 | @Override
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278 | public User getUser() {
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279 | return user;
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280 | }
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281 |
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282 | @Override
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283 | public void setUser(User user) {
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284 | this.user = user;
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285 | }
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286 |
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287 | @Override
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288 | public int getChangesetId() {
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289 | return changesetId;
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290 | }
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291 |
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292 | @Override
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293 | public void setChangesetId(int changesetId) {
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294 | if (this.changesetId == changesetId)
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295 | return;
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296 | if (changesetId < 0)
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297 | throw new IllegalArgumentException(MessageFormat.format("Parameter ''{0}'' >= 0 expected, got {1}", "changesetId", changesetId));
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298 | if (isNew() && changesetId > 0)
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299 | throw new IllegalStateException(tr("Cannot assign a changesetId > 0 to a new primitive. Value of changesetId is {0}", changesetId));
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300 |
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301 | this.changesetId = changesetId;
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302 | }
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303 |
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304 | @Override
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305 | public PrimitiveId getPrimitiveId() {
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306 | return new SimplePrimitiveId(getUniqueId(), getType());
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307 | }
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308 |
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309 | public OsmPrimitiveType getDisplayType() {
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310 | return getType();
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311 | }
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312 |
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313 | @Override
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314 | public void setTimestamp(Date timestamp) {
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315 | this.timestamp = (int) TimeUnit.MILLISECONDS.toSeconds(timestamp.getTime());
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316 | }
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317 |
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318 | @Override
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319 | public void setRawTimestamp(int timestamp) {
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320 | this.timestamp = timestamp;
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321 | }
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322 |
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323 | @Override
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324 | public Date getTimestamp() {
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325 | return new Date(TimeUnit.SECONDS.toMillis(timestamp));
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326 | }
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327 |
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328 | @Override
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329 | public int getRawTimestamp() {
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330 | return timestamp;
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331 | }
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332 |
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333 | @Override
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334 | public boolean isTimestampEmpty() {
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335 | return timestamp == 0;
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336 | }
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337 |
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338 | /* -------
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339 | /* FLAGS
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340 | /* ------*/
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341 |
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342 | protected void updateFlags(short flag, boolean value) {
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343 | if (value) {
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344 | flags |= flag;
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345 | } else {
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346 | flags &= (short) ~flag;
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347 | }
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348 | }
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349 |
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350 | @Override
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351 | public void setModified(boolean modified) {
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352 | updateFlags(FLAG_MODIFIED, modified);
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353 | }
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354 |
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355 | @Override
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356 | public boolean isModified() {
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357 | return (flags & FLAG_MODIFIED) != 0;
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358 | }
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359 |
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360 | @Override
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361 | public boolean isDeleted() {
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362 | return (flags & FLAG_DELETED) != 0;
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363 | }
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364 |
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365 | @Override
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366 | public boolean isUndeleted() {
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367 | return (flags & (FLAG_VISIBLE + FLAG_DELETED)) == 0;
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368 | }
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369 |
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370 | @Override
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371 | public boolean isUsable() {
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372 | return (flags & (FLAG_DELETED + FLAG_INCOMPLETE)) == 0;
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373 | }
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374 |
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375 | @Override
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376 | public boolean isVisible() {
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377 | return (flags & FLAG_VISIBLE) != 0;
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378 | }
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379 |
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380 | @Override
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381 | public void setVisible(boolean visible) {
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382 | if (isNew() && !visible)
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383 | throw new IllegalStateException(tr("A primitive with ID = 0 cannot be invisible."));
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384 | updateFlags(FLAG_VISIBLE, visible);
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385 | }
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386 |
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387 | @Override
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388 | public void setDeleted(boolean deleted) {
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389 | updateFlags(FLAG_DELETED, deleted);
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390 | setModified(deleted ^ !isVisible());
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391 | }
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392 |
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393 | /**
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394 | * If set to true, this object is incomplete, which means only the id
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395 | * and type is known (type is the objects instance class)
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396 | * @param incomplete incomplete flag value
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397 | */
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398 | protected void setIncomplete(boolean incomplete) {
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399 | updateFlags(FLAG_INCOMPLETE, incomplete);
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400 | }
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401 |
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402 | @Override
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403 | public boolean isIncomplete() {
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404 | return (flags & FLAG_INCOMPLETE) != 0;
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405 | }
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406 |
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407 | protected String getFlagsAsString() {
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408 | StringBuilder builder = new StringBuilder();
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409 |
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410 | if (isIncomplete()) {
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411 | builder.append('I');
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412 | }
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413 | if (isModified()) {
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414 | builder.append('M');
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415 | }
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416 | if (isVisible()) {
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417 | builder.append('V');
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418 | }
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419 | if (isDeleted()) {
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420 | builder.append('D');
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421 | }
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422 | return builder.toString();
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423 | }
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424 |
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425 | /*------------
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426 | * Keys handling
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427 | ------------*/
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428 |
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429 | /**
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430 | * The key/value list for this primitive.
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431 | * <p>
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432 | * Note that the keys field is synchronized using RCU.
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433 | * Writes to it are not synchronized by this object, the writers have to synchronize writes themselves.
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434 | * <p>
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435 | * In short this means that you should not rely on this variable being the same value when read again and your should always
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436 | * copy it on writes.
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437 | * <p>
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438 | * Further reading:
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439 | * <ul>
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440 | * <li>{@link java.util.concurrent.CopyOnWriteArrayList}</li>
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441 | * <li> <a href="http://stackoverflow.com/questions/2950871/how-can-copyonwritearraylist-be-thread-safe">
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442 | * http://stackoverflow.com/questions/2950871/how-can-copyonwritearraylist-be-thread-safe</a></li>
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443 | * <li> <a href="https://en.wikipedia.org/wiki/Read-copy-update">
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444 | * https://en.wikipedia.org/wiki/Read-copy-update</a> (mind that we have a Garbage collector,
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445 | * {@code rcu_assign_pointer} and {@code rcu_dereference} are ensured by the {@code volatile} keyword)</li>
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446 | * </ul>
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447 | */
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448 | protected volatile String[] keys;
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449 |
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450 | /**
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451 | * Replies the map of key/value pairs. Never replies null. The map can be empty, though.
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452 | *
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453 | * @return tags of this primitive. Changes made in returned map are not mapped
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454 | * back to the primitive, use setKeys() to modify the keys
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455 | * @see #visitKeys(KeyValueVisitor)
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456 | */
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457 | @Override
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458 | public TagMap getKeys() {
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459 | return new TagMap(keys);
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460 | }
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461 |
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462 | /**
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463 | * Calls the visitor for every key/value pair of this primitive.
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464 | *
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465 | * @param visitor The visitor to call.
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466 | * @see #getKeys()
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467 | * @since 8742
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468 | */
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469 | public void visitKeys(KeyValueVisitor visitor) {
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470 | final String[] keys = this.keys;
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471 | if (keys != null) {
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472 | for (int i = 0; i < keys.length; i += 2) {
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473 | visitor.visitKeyValue(this, keys[i], keys[i + 1]);
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474 | }
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475 | }
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476 | }
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477 |
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478 | /**
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479 | * Sets the keys of this primitives to the key/value pairs in <code>keys</code>.
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480 | * Old key/value pairs are removed.
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481 | * If <code>keys</code> is null, clears existing key/value pairs.
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482 | * <p>
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483 | * Note that this method, like all methods that modify keys, is not synchronized and may lead to data corruption when being used
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484 | * from multiple threads.
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485 | *
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486 | * @param keys the key/value pairs to set. If null, removes all existing key/value pairs.
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487 | */
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488 | @Override
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489 | public void setKeys(Map<String, String> keys) {
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490 | Map<String, String> originalKeys = getKeys();
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491 | if (keys == null || keys.isEmpty()) {
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492 | this.keys = null;
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493 | keysChangedImpl(originalKeys);
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494 | return;
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495 | }
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496 | String[] newKeys = new String[keys.size() * 2];
|
---|
497 | int index = 0;
|
---|
498 | for (Entry<String, String> entry:keys.entrySet()) {
|
---|
499 | newKeys[index++] = entry.getKey();
|
---|
500 | newKeys[index++] = entry.getValue();
|
---|
501 | }
|
---|
502 | this.keys = newKeys;
|
---|
503 | keysChangedImpl(originalKeys);
|
---|
504 | }
|
---|
505 |
|
---|
506 | /**
|
---|
507 | * Copy the keys from a TagMap.
|
---|
508 | * @param keys The new key map.
|
---|
509 | */
|
---|
510 | public void setKeys(TagMap keys) {
|
---|
511 | Map<String, String> originalKeys = getKeys();
|
---|
512 | if (keys == null) {
|
---|
513 | this.keys = null;
|
---|
514 | } else {
|
---|
515 | String[] arr = keys.getTagsArray();
|
---|
516 | if (arr.length == 0) {
|
---|
517 | this.keys = null;
|
---|
518 | } else {
|
---|
519 | this.keys = arr;
|
---|
520 | }
|
---|
521 | }
|
---|
522 | keysChangedImpl(originalKeys);
|
---|
523 | }
|
---|
524 |
|
---|
525 | /**
|
---|
526 | * Set the given value to the given key. If key is null, does nothing. If value is null,
|
---|
527 | * removes the key and behaves like {@link #remove(String)}.
|
---|
528 | * <p>
|
---|
529 | * Note that this method, like all methods that modify keys, is not synchronized and may lead to data corruption when being used
|
---|
530 | * from multiple threads.
|
---|
531 | *
|
---|
532 | * @param key The key, for which the value is to be set. Can be null or empty, does nothing in this case.
|
---|
533 | * @param value The value for the key. If null, removes the respective key/value pair.
|
---|
534 | *
|
---|
535 | * @see #remove(String)
|
---|
536 | */
|
---|
537 | @Override
|
---|
538 | public void put(String key, String value) {
|
---|
539 | Map<String, String> originalKeys = getKeys();
|
---|
540 | if (key == null || Utils.strip(key).isEmpty())
|
---|
541 | return;
|
---|
542 | else if (value == null) {
|
---|
543 | remove(key);
|
---|
544 | } else if (keys == null) {
|
---|
545 | keys = new String[] {key, value};
|
---|
546 | keysChangedImpl(originalKeys);
|
---|
547 | } else {
|
---|
548 | int keyIndex = indexOfKey(keys, key);
|
---|
549 | int tagArrayLength = keys.length;
|
---|
550 | if (keyIndex < 0) {
|
---|
551 | keyIndex = tagArrayLength;
|
---|
552 | tagArrayLength += 2;
|
---|
553 | }
|
---|
554 |
|
---|
555 | // Do not try to optimize this array creation if the key already exists.
|
---|
556 | // We would need to convert the keys array to be an AtomicReferenceArray
|
---|
557 | // Or we would at least need a volatile write after the array was modified to
|
---|
558 | // ensure that changes are visible by other threads.
|
---|
559 | String[] newKeys = Arrays.copyOf(keys, tagArrayLength);
|
---|
560 | newKeys[keyIndex] = key;
|
---|
561 | newKeys[keyIndex + 1] = value;
|
---|
562 | keys = newKeys;
|
---|
563 | keysChangedImpl(originalKeys);
|
---|
564 | }
|
---|
565 | }
|
---|
566 |
|
---|
567 | /**
|
---|
568 | * Scans a key/value array for a given key.
|
---|
569 | * @param keys The key array. It is not modified. It may be null to indicate an emtpy array.
|
---|
570 | * @param key The key to search for.
|
---|
571 | * @return The position of that key in the keys array - which is always a multiple of 2 - or -1 if it was not found.
|
---|
572 | */
|
---|
573 | private static int indexOfKey(String[] keys, String key) {
|
---|
574 | if (keys == null) {
|
---|
575 | return -1;
|
---|
576 | }
|
---|
577 | for (int i = 0; i < keys.length; i += 2) {
|
---|
578 | if (keys[i].equals(key)) {
|
---|
579 | return i;
|
---|
580 | }
|
---|
581 | }
|
---|
582 | return -1;
|
---|
583 | }
|
---|
584 |
|
---|
585 | /**
|
---|
586 | * Remove the given key from the list
|
---|
587 | * <p>
|
---|
588 | * Note that this method, like all methods that modify keys, is not synchronized and may lead to data corruption when being used
|
---|
589 | * from multiple threads.
|
---|
590 | *
|
---|
591 | * @param key the key to be removed. Ignored, if key is null.
|
---|
592 | */
|
---|
593 | @Override
|
---|
594 | public void remove(String key) {
|
---|
595 | if (key == null || keys == null) return;
|
---|
596 | if (!hasKey(key))
|
---|
597 | return;
|
---|
598 | Map<String, String> originalKeys = getKeys();
|
---|
599 | if (keys.length == 2) {
|
---|
600 | keys = null;
|
---|
601 | keysChangedImpl(originalKeys);
|
---|
602 | return;
|
---|
603 | }
|
---|
604 | String[] newKeys = new String[keys.length - 2];
|
---|
605 | int j = 0;
|
---|
606 | for (int i = 0; i < keys.length; i += 2) {
|
---|
607 | if (!keys[i].equals(key)) {
|
---|
608 | newKeys[j++] = keys[i];
|
---|
609 | newKeys[j++] = keys[i+1];
|
---|
610 | }
|
---|
611 | }
|
---|
612 | keys = newKeys;
|
---|
613 | keysChangedImpl(originalKeys);
|
---|
614 | }
|
---|
615 |
|
---|
616 | /**
|
---|
617 | * Removes all keys from this primitive.
|
---|
618 | * <p>
|
---|
619 | * Note that this method, like all methods that modify keys, is not synchronized and may lead to data corruption when being used
|
---|
620 | * from multiple threads.
|
---|
621 | */
|
---|
622 | @Override
|
---|
623 | public void removeAll() {
|
---|
624 | if (keys != null) {
|
---|
625 | Map<String, String> originalKeys = getKeys();
|
---|
626 | keys = null;
|
---|
627 | keysChangedImpl(originalKeys);
|
---|
628 | }
|
---|
629 | }
|
---|
630 |
|
---|
631 | /**
|
---|
632 | * Replies the value for key <code>key</code>. Replies null, if <code>key</code> is null.
|
---|
633 | * Replies null, if there is no value for the given key.
|
---|
634 | *
|
---|
635 | * @param key the key. Can be null, replies null in this case.
|
---|
636 | * @return the value for key <code>key</code>.
|
---|
637 | */
|
---|
638 | @Override
|
---|
639 | public final String get(String key) {
|
---|
640 | String[] keys = this.keys;
|
---|
641 | if (key == null)
|
---|
642 | return null;
|
---|
643 | if (keys == null)
|
---|
644 | return null;
|
---|
645 | for (int i = 0; i < keys.length; i += 2) {
|
---|
646 | if (keys[i].equals(key)) return keys[i+1];
|
---|
647 | }
|
---|
648 | return null;
|
---|
649 | }
|
---|
650 |
|
---|
651 | /**
|
---|
652 | * Returns true if the {@code key} corresponds to an OSM true value.
|
---|
653 | * @param key OSM key
|
---|
654 | * @return {@code true} if the {@code key} corresponds to an OSM true value
|
---|
655 | * @see OsmUtils#isTrue(String)
|
---|
656 | */
|
---|
657 | public final boolean isKeyTrue(String key) {
|
---|
658 | return OsmUtils.isTrue(get(key));
|
---|
659 | }
|
---|
660 |
|
---|
661 | /**
|
---|
662 | * Returns true if the {@code key} corresponds to an OSM false value.
|
---|
663 | * @param key OSM key
|
---|
664 | * @return {@code true} if the {@code key} corresponds to an OSM false value
|
---|
665 | * @see OsmUtils#isFalse(String)
|
---|
666 | */
|
---|
667 | public final boolean isKeyFalse(String key) {
|
---|
668 | return OsmUtils.isFalse(get(key));
|
---|
669 | }
|
---|
670 |
|
---|
671 | public final String getIgnoreCase(String key) {
|
---|
672 | String[] keys = this.keys;
|
---|
673 | if (key == null)
|
---|
674 | return null;
|
---|
675 | if (keys == null)
|
---|
676 | return null;
|
---|
677 | for (int i = 0; i < keys.length; i += 2) {
|
---|
678 | if (keys[i].equalsIgnoreCase(key)) return keys[i+1];
|
---|
679 | }
|
---|
680 | return null;
|
---|
681 | }
|
---|
682 |
|
---|
683 | public final int getNumKeys() {
|
---|
684 | String[] keys = this.keys;
|
---|
685 | return keys == null ? 0 : keys.length / 2;
|
---|
686 | }
|
---|
687 |
|
---|
688 | @Override
|
---|
689 | public final Collection<String> keySet() {
|
---|
690 | final String[] keys = this.keys;
|
---|
691 | if (keys == null) {
|
---|
692 | return Collections.emptySet();
|
---|
693 | }
|
---|
694 | if (keys.length == 1) {
|
---|
695 | return Collections.singleton(keys[0]);
|
---|
696 | }
|
---|
697 |
|
---|
698 | final Set<String> result = new HashSet<>(Utils.hashMapInitialCapacity(keys.length / 2));
|
---|
699 | for (int i = 0; i < keys.length; i += 2) {
|
---|
700 | result.add(keys[i]);
|
---|
701 | }
|
---|
702 | return result;
|
---|
703 | }
|
---|
704 |
|
---|
705 | /**
|
---|
706 | * Replies true, if the map of key/value pairs of this primitive is not empty.
|
---|
707 | *
|
---|
708 | * @return true, if the map of key/value pairs of this primitive is not empty; false
|
---|
709 | * otherwise
|
---|
710 | */
|
---|
711 | @Override
|
---|
712 | public final boolean hasKeys() {
|
---|
713 | return keys != null;
|
---|
714 | }
|
---|
715 |
|
---|
716 | /**
|
---|
717 | * Replies true if this primitive has a tag with key <code>key</code>.
|
---|
718 | *
|
---|
719 | * @param key the key
|
---|
720 | * @return true, if his primitive has a tag with key <code>key</code>
|
---|
721 | */
|
---|
722 | public boolean hasKey(String key) {
|
---|
723 | return key != null && indexOfKey(keys, key) >= 0;
|
---|
724 | }
|
---|
725 |
|
---|
726 | /**
|
---|
727 | * What to do, when the tags have changed by one of the tag-changing methods.
|
---|
728 | * @param originalKeys original tags
|
---|
729 | */
|
---|
730 | protected abstract void keysChangedImpl(Map<String, String> originalKeys);
|
---|
731 |
|
---|
732 | @Override
|
---|
733 | public String getName() {
|
---|
734 | return get("name");
|
---|
735 | }
|
---|
736 |
|
---|
737 | @Override
|
---|
738 | public String getLocalName() {
|
---|
739 | for (String s : LanguageInfo.getLanguageCodes(null)) {
|
---|
740 | String val = get("name:" + s);
|
---|
741 | if (val != null)
|
---|
742 | return val;
|
---|
743 | }
|
---|
744 |
|
---|
745 | return getName();
|
---|
746 | }
|
---|
747 |
|
---|
748 | /**
|
---|
749 | * Tests whether this primitive contains a tag consisting of {@code key} and {@code values}.
|
---|
750 | * @param key the key forming the tag.
|
---|
751 | * @param value value forming the tag.
|
---|
752 | * @return true iff primitive contains a tag consisting of {@code key} and {@code value}.
|
---|
753 | */
|
---|
754 | public boolean hasTag(String key, String value) {
|
---|
755 | return Objects.equals(value, get(key));
|
---|
756 | }
|
---|
757 |
|
---|
758 | /**
|
---|
759 | * Tests whether this primitive contains a tag consisting of {@code key} and any of {@code values}.
|
---|
760 | * @param key the key forming the tag.
|
---|
761 | * @param values one or many values forming the tag.
|
---|
762 | * @return true if primitive contains a tag consisting of {@code key} and any of {@code values}.
|
---|
763 | */
|
---|
764 | public boolean hasTag(String key, String... values) {
|
---|
765 | return hasTag(key, Arrays.asList(values));
|
---|
766 | }
|
---|
767 |
|
---|
768 | /**
|
---|
769 | * Tests whether this primitive contains a tag consisting of {@code key} and any of {@code values}.
|
---|
770 | * @param key the key forming the tag.
|
---|
771 | * @param values one or many values forming the tag.
|
---|
772 | * @return true iff primitive contains a tag consisting of {@code key} and any of {@code values}.
|
---|
773 | */
|
---|
774 | public boolean hasTag(String key, Collection<String> values) {
|
---|
775 | return values.contains(get(key));
|
---|
776 | }
|
---|
777 | }
|
---|