1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.io;
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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.DateFormat;
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7 | import java.text.MessageFormat;
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8 | import java.text.ParseException;
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9 | import java.util.Collection;
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10 | import java.util.Collections;
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11 | import java.util.Date;
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12 | import java.util.HashMap;
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13 | import java.util.Map;
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14 | import java.util.Map.Entry;
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15 | import java.util.stream.Collectors;
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16 | import java.util.stream.Stream;
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17 |
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18 | import org.openstreetmap.josm.data.Bounds;
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19 | import org.openstreetmap.josm.data.UserIdentityManager;
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20 | import org.openstreetmap.josm.data.coor.LatLon;
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21 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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22 | import org.openstreetmap.josm.tools.Logging;
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23 | import org.openstreetmap.josm.tools.Utils;
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24 | import org.openstreetmap.josm.tools.date.DateUtils;
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25 |
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26 | /**
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27 | * Data class to collect restrictions (parameters) for downloading changesets from the
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28 | * OSM API.
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29 | * <p>
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30 | * @see <a href="https://wiki.openstreetmap.org/wiki/API_v0.6#Query:_GET_.2Fapi.2F0.6.2Fchangesets">OSM API 0.6 call "/changesets?"</a>
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31 | */
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32 | public class ChangesetQuery {
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33 |
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34 | /**
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35 | * Maximum number of changesets returned by the OSM API call "/changesets?"
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36 | */
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37 | public static final int MAX_CHANGESETS_NUMBER = 100;
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38 |
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39 | /** the user id this query is restricted to. null, if no restriction to a user id applies */
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40 | private Integer uid;
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41 | /** the user name this query is restricted to. null, if no restriction to a user name applies */
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42 | private String userName;
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43 | /** the bounding box this query is restricted to. null, if no restriction to a bounding box applies */
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44 | private Bounds bounds;
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45 |
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46 | private Date closedAfter;
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47 | private Date createdBefore;
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48 | /** indicates whether only open changesets are queried. null, if no restrictions regarding open changesets apply */
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49 | private Boolean open;
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50 | /** indicates whether only closed changesets are queried. null, if no restrictions regarding open changesets apply */
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51 | private Boolean closed;
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52 | /** a collection of changeset ids to query for */
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53 | private Collection<Long> changesetIds;
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54 |
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55 | /**
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56 | * Replies a changeset query object from the query part of a OSM API URL for querying changesets.
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57 | *
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58 | * @param query the query part
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59 | * @return the query object
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60 | * @throws ChangesetQueryUrlException if query doesn't consist of valid query parameters
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61 | */
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62 | public static ChangesetQuery buildFromUrlQuery(String query) throws ChangesetQueryUrlException {
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63 | return new ChangesetQueryUrlParser().parse(query);
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64 | }
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65 |
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66 | /**
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67 | * Replies a changeset query object restricted to the current user, if known.
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68 | * @return a changeset query object restricted to the current user, if known
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69 | * @throws IllegalStateException if current user is anonymous
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70 | * @since 12495
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71 | */
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72 | public static ChangesetQuery forCurrentUser() {
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73 | UserIdentityManager im = UserIdentityManager.getInstance();
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74 | if (im.isAnonymous()) {
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75 | throw new IllegalStateException("anonymous user");
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76 | }
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77 | ChangesetQuery query = new ChangesetQuery();
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78 | if (im.isFullyIdentified()) {
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79 | return query.forUser(im.getUserId());
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80 | } else {
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81 | return query.forUser(im.getUserName());
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82 | }
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83 | }
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84 |
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85 | /**
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86 | * Restricts the query to changesets owned by the user with id <code>uid</code>.
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87 | *
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88 | * @param uid the uid of the user. > 0 expected.
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89 | * @return the query object with the applied restriction
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90 | * @throws IllegalArgumentException if uid <= 0
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91 | * @see #forUser(String)
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92 | */
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93 | public ChangesetQuery forUser(int uid) {
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94 | if (uid <= 0)
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95 | throw new IllegalArgumentException(MessageFormat.format("Parameter ''{0}'' > 0 expected. Got ''{1}''.", "uid", uid));
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96 | this.uid = uid;
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97 | this.userName = null;
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98 | return this;
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99 | }
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100 |
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101 | /**
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102 | * Restricts the query to changesets owned by the user with user name <code>username</code>.
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103 | *
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104 | * Caveat: for historical reasons the username might not be unique! It is recommended to use
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105 | * {@link #forUser(int)} to restrict the query to a specific user.
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106 | *
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107 | * @param username the username. Must not be null.
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108 | * @return the query object with the applied restriction
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109 | * @throws IllegalArgumentException if username is null.
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110 | * @see #forUser(int)
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111 | */
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112 | public ChangesetQuery forUser(String username) {
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113 | CheckParameterUtil.ensureParameterNotNull(username, "username");
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114 | this.userName = username;
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115 | this.uid = null;
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116 | return this;
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117 | }
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118 |
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119 | /**
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120 | * Replies true if this query is restricted to user whom we only know the user name for.
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121 | *
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122 | * @return true if this query is restricted to user whom we only know the user name for
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123 | */
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124 | public boolean isRestrictedToPartiallyIdentifiedUser() {
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125 | return userName != null;
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126 | }
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127 |
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128 | /**
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129 | * Replies the user name which this query is restricted to. null, if this query isn't
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130 | * restricted to a user name, i.e. if {@link #isRestrictedToPartiallyIdentifiedUser()} is false.
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131 | *
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132 | * @return the user name which this query is restricted to
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133 | */
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134 | public String getUserName() {
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135 | return userName;
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136 | }
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137 |
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138 | /**
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139 | * Replies true if this query is restricted to user whom know the user id for.
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140 | *
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141 | * @return true if this query is restricted to user whom know the user id for
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142 | */
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143 | public boolean isRestrictedToFullyIdentifiedUser() {
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144 | return uid > 0;
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145 | }
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146 |
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147 | /**
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148 | * Replies a query which is restricted to a bounding box.
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149 | *
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150 | * @param minLon min longitude of the bounding box. Valid longitude value expected.
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151 | * @param minLat min latitude of the bounding box. Valid latitude value expected.
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152 | * @param maxLon max longitude of the bounding box. Valid longitude value expected.
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153 | * @param maxLat max latitude of the bounding box. Valid latitude value expected.
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154 | *
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155 | * @return the restricted changeset query
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156 | * @throws IllegalArgumentException if either of the parameters isn't a valid longitude or
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157 | * latitude value
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158 | */
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159 | public ChangesetQuery inBbox(double minLon, double minLat, double maxLon, double maxLat) {
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160 | if (!LatLon.isValidLon(minLon))
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161 | throw new IllegalArgumentException(tr("Illegal longitude value for parameter ''{0}'', got {1}", "minLon", minLon));
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162 | if (!LatLon.isValidLon(maxLon))
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163 | throw new IllegalArgumentException(tr("Illegal longitude value for parameter ''{0}'', got {1}", "maxLon", maxLon));
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164 | if (!LatLon.isValidLat(minLat))
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165 | throw new IllegalArgumentException(tr("Illegal latitude value for parameter ''{0}'', got {1}", "minLat", minLat));
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166 | if (!LatLon.isValidLat(maxLat))
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167 | throw new IllegalArgumentException(tr("Illegal longitude value for parameter ''{0}'', got {1}", "maxLat", maxLat));
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168 |
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169 | return inBbox(new LatLon(minLon, minLat), new LatLon(maxLon, maxLat));
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170 | }
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171 |
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172 | /**
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173 | * Replies a query which is restricted to a bounding box.
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174 | *
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175 | * @param min the min lat/lon coordinates of the bounding box. Must not be null.
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176 | * @param max the max lat/lon coordiantes of the bounding box. Must not be null.
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177 | *
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178 | * @return the restricted changeset query
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179 | * @throws IllegalArgumentException if min is null
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180 | * @throws IllegalArgumentException if max is null
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181 | */
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182 | public ChangesetQuery inBbox(LatLon min, LatLon max) {
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183 | CheckParameterUtil.ensureParameterNotNull(min, "min");
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184 | CheckParameterUtil.ensureParameterNotNull(max, "max");
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185 | this.bounds = new Bounds(min, max);
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186 | return this;
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187 | }
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188 |
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189 | /**
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190 | * Replies a query which is restricted to a bounding box given by <code>bbox</code>.
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191 | *
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192 | * @param bbox the bounding box. Must not be null.
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193 | * @return the changeset query
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194 | * @throws IllegalArgumentException if bbox is null.
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195 | */
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196 | public ChangesetQuery inBbox(Bounds bbox) {
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197 | CheckParameterUtil.ensureParameterNotNull(bbox, "bbox");
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198 | this.bounds = bbox;
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199 | return this;
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200 | }
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201 |
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202 | /**
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203 | * Restricts the result to changesets which have been closed after the date given by <code>d</code>.
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204 | * <code>d</code> d is a date relative to the current time zone.
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205 | *
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206 | * @param d the date . Must not be null.
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207 | * @return the restricted changeset query
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208 | * @throws IllegalArgumentException if d is null
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209 | */
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210 | public ChangesetQuery closedAfter(Date d) {
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211 | CheckParameterUtil.ensureParameterNotNull(d, "d");
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212 | this.closedAfter = DateUtils.cloneDate(d);
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213 | return this;
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214 | }
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215 |
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216 | /**
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217 | * Restricts the result to changesets which have been closed after <code>closedAfter</code> and which
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218 | * habe been created before <code>createdBefore</code>. Both dates are expressed relative to the current
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219 | * time zone.
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220 | *
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221 | * @param closedAfter only reply changesets closed after this date. Must not be null.
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222 | * @param createdBefore only reply changesets created before this date. Must not be null.
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223 | * @return the restricted changeset query
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224 | * @throws IllegalArgumentException if closedAfter is null
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225 | * @throws IllegalArgumentException if createdBefore is null
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226 | */
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227 | public ChangesetQuery closedAfterAndCreatedBefore(Date closedAfter, Date createdBefore) {
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228 | CheckParameterUtil.ensureParameterNotNull(closedAfter, "closedAfter");
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229 | CheckParameterUtil.ensureParameterNotNull(createdBefore, "createdBefore");
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230 | this.closedAfter = DateUtils.cloneDate(closedAfter);
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231 | this.createdBefore = DateUtils.cloneDate(createdBefore);
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232 | return this;
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233 | }
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234 |
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235 | /**
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236 | * Restricts the result to changesets which are or aren't open, depending on the value of
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237 | * <code>isOpen</code>
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238 | *
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239 | * @param isOpen whether changesets should or should not be open
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240 | * @return the restricted changeset query
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241 | */
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242 | public ChangesetQuery beingOpen(boolean isOpen) {
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243 | this.open = isOpen;
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244 | return this;
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245 | }
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246 |
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247 | /**
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248 | * Restricts the result to changesets which are or aren't closed, depending on the value of
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249 | * <code>isClosed</code>
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250 | *
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251 | * @param isClosed whether changesets should or should not be open
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252 | * @return the restricted changeset query
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253 | */
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254 | public ChangesetQuery beingClosed(boolean isClosed) {
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255 | this.closed = isClosed;
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256 | return this;
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257 | }
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258 |
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259 | /**
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260 | * Restricts the query to the given changeset ids (which are added to previously added ones).
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261 | *
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262 | * @param changesetIds the changeset ids
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263 | * @return the query object with the applied restriction
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264 | * @throws IllegalArgumentException if changesetIds is null.
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265 | */
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266 | public ChangesetQuery forChangesetIds(Collection<Long> changesetIds) {
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267 | CheckParameterUtil.ensureParameterNotNull(changesetIds, "changesetIds");
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268 | if (changesetIds.size() > MAX_CHANGESETS_NUMBER) {
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269 | Logging.warn("Changeset query built with more than " + MAX_CHANGESETS_NUMBER + " changeset ids (" + changesetIds.size() + ')');
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270 | }
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271 | this.changesetIds = changesetIds;
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272 | return this;
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273 | }
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274 |
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275 | /**
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276 | * Replies the query string to be used in a query URL for the OSM API.
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277 | *
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278 | * @return the query string
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279 | */
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280 | public String getQueryString() {
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281 | StringBuilder sb = new StringBuilder();
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282 | if (uid != null) {
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283 | sb.append("user=").append(uid);
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284 | } else if (userName != null) {
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285 | sb.append("display_name=").append(Utils.encodeUrl(userName));
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286 | }
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287 | if (bounds != null) {
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288 | if (sb.length() > 0) {
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289 | sb.append('&');
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290 | }
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291 | sb.append("bbox=").append(bounds.encodeAsString(","));
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292 | }
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293 | if (closedAfter != null && createdBefore != null) {
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294 | if (sb.length() > 0) {
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295 | sb.append('&');
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296 | }
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297 | DateFormat df = DateUtils.newIsoDateTimeFormat();
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298 | sb.append("time=").append(df.format(closedAfter));
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299 | sb.append(',').append(df.format(createdBefore));
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300 | } else if (closedAfter != null) {
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301 | if (sb.length() > 0) {
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302 | sb.append('&');
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303 | }
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304 | DateFormat df = DateUtils.newIsoDateTimeFormat();
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305 | sb.append("time=").append(df.format(closedAfter));
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306 | }
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307 |
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308 | if (open != null) {
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309 | if (sb.length() > 0) {
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310 | sb.append('&');
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311 | }
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312 | sb.append("open=").append(Boolean.toString(open));
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313 | } else if (closed != null) {
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314 | if (sb.length() > 0) {
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315 | sb.append('&');
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316 | }
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317 | sb.append("closed=").append(Boolean.toString(closed));
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318 | } else if (changesetIds != null) {
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319 | // since 2013-12-05, see https://github.com/openstreetmap/openstreetmap-website/commit/1d1f194d598e54a5d6fb4f38fb569d4138af0dc8
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320 | if (sb.length() > 0) {
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321 | sb.append('&');
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322 | }
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323 | sb.append("changesets=").append(Utils.join(",", changesetIds));
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324 | }
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325 | return sb.toString();
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326 | }
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327 |
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328 | @Override
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329 | public String toString() {
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330 | return getQueryString();
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331 | }
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332 |
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333 | /**
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334 | * Exception thrown for invalid changeset queries.
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335 | */
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336 | public static class ChangesetQueryUrlException extends Exception {
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337 |
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338 | /**
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339 | * Constructs a new {@code ChangesetQueryUrlException} with the specified detail message.
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340 | *
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341 | * @param message the detail message. The detail message is saved for later retrieval by the {@link #getMessage()} method.
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342 | */
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343 | public ChangesetQueryUrlException(String message) {
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344 | super(message);
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345 | }
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346 |
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347 | /**
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348 | * Constructs a new {@code ChangesetQueryUrlException} with the specified cause and detail message.
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349 | *
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350 | * @param message the detail message. The detail message is saved for later retrieval by the {@link #getMessage()} method.
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351 | * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method).
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352 | * (A <tt>null</tt> value is permitted, and indicates that the cause is nonexistent or unknown.)
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353 | */
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354 | public ChangesetQueryUrlException(String message, Throwable cause) {
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355 | super(message, cause);
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356 | }
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357 |
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358 | /**
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359 | * Constructs a new {@code ChangesetQueryUrlException} with the specified cause and a detail message of
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360 | * <tt>(cause==null ? null : cause.toString())</tt> (which typically contains the class and detail message of <tt>cause</tt>).
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361 | *
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362 | * @param cause the cause (which is saved for later retrieval by the {@link #getCause()} method).
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363 | * (A <tt>null</tt> value is permitted, and indicates that the cause is nonexistent or unknown.)
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364 | */
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365 | public ChangesetQueryUrlException(Throwable cause) {
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366 | super(cause);
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367 | }
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368 | }
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369 |
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370 | /**
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371 | * Changeset query URL parser.
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372 | */
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373 | public static class ChangesetQueryUrlParser {
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374 | protected int parseUid(String value) throws ChangesetQueryUrlException {
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375 | if (value == null || value.trim().isEmpty())
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376 | throw new ChangesetQueryUrlException(
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377 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", "uid", value));
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378 | int id;
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379 | try {
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380 | id = Integer.parseInt(value);
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381 | if (id <= 0)
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382 | throw new ChangesetQueryUrlException(
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383 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", "uid", value));
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384 | } catch (NumberFormatException e) {
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385 | throw new ChangesetQueryUrlException(
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386 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", "uid", value), e);
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387 | }
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388 | return id;
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389 | }
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390 |
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391 | protected boolean parseBoolean(String value, String parameter) throws ChangesetQueryUrlException {
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392 | if (value == null || value.trim().isEmpty())
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393 | throw new ChangesetQueryUrlException(
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394 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", parameter, value));
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395 | switch (value) {
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396 | case "true":
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397 | return true;
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398 | case "false":
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399 | return false;
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400 | default:
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401 | throw new ChangesetQueryUrlException(
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402 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", parameter, value));
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403 | }
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404 | }
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405 |
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406 | protected Date parseDate(String value, String parameter) throws ChangesetQueryUrlException {
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407 | if (value == null || value.trim().isEmpty())
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408 | throw new ChangesetQueryUrlException(
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409 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", parameter, value));
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410 | DateFormat formatter = DateUtils.newIsoDateTimeFormat();
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411 | try {
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412 | return formatter.parse(value);
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413 | } catch (ParseException e) {
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414 | throw new ChangesetQueryUrlException(
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415 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", parameter, value), e);
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416 | }
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417 | }
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418 |
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419 | protected Date[] parseTime(String value) throws ChangesetQueryUrlException {
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420 | String[] dates = value.split(",");
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421 | if (dates.length == 0 || dates.length > 2)
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422 | throw new ChangesetQueryUrlException(
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423 | tr("Unexpected value for ''{0}'' in changeset query url, got {1}", "time", value));
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424 | if (dates.length == 1)
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425 | return new Date[]{parseDate(dates[0], "time")};
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426 | else if (dates.length == 2)
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427 | return new Date[]{parseDate(dates[0], "time"), parseDate(dates[1], "time")};
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428 | return new Date[]{};
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429 | }
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430 |
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431 | protected Collection<Long> parseLongs(String value) {
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432 | if (value == null || value.isEmpty()) {
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433 | return Collections.<Long>emptySet();
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434 | } else {
|
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435 | return Stream.of(value.split(",")).map(Long::valueOf).collect(Collectors.toSet());
|
---|
436 | }
|
---|
437 | }
|
---|
438 |
|
---|
439 | protected ChangesetQuery createFromMap(Map<String, String> queryParams) throws ChangesetQueryUrlException {
|
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440 | ChangesetQuery csQuery = new ChangesetQuery();
|
---|
441 |
|
---|
442 | for (Entry<String, String> entry: queryParams.entrySet()) {
|
---|
443 | String k = entry.getKey();
|
---|
444 | switch(k) {
|
---|
445 | case "uid":
|
---|
446 | if (queryParams.containsKey("display_name"))
|
---|
447 | throw new ChangesetQueryUrlException(
|
---|
448 | tr("Cannot create a changeset query including both the query parameters ''uid'' and ''display_name''"));
|
---|
449 | csQuery.forUser(parseUid(queryParams.get("uid")));
|
---|
450 | break;
|
---|
451 | case "display_name":
|
---|
452 | if (queryParams.containsKey("uid"))
|
---|
453 | throw new ChangesetQueryUrlException(
|
---|
454 | tr("Cannot create a changeset query including both the query parameters ''uid'' and ''display_name''"));
|
---|
455 | csQuery.forUser(queryParams.get("display_name"));
|
---|
456 | break;
|
---|
457 | case "open":
|
---|
458 | csQuery.beingOpen(parseBoolean(entry.getValue(), "open"));
|
---|
459 | break;
|
---|
460 | case "closed":
|
---|
461 | csQuery.beingClosed(parseBoolean(entry.getValue(), "closed"));
|
---|
462 | break;
|
---|
463 | case "time":
|
---|
464 | Date[] dates = parseTime(entry.getValue());
|
---|
465 | switch(dates.length) {
|
---|
466 | case 1:
|
---|
467 | csQuery.closedAfter(dates[0]);
|
---|
468 | break;
|
---|
469 | case 2:
|
---|
470 | csQuery.closedAfterAndCreatedBefore(dates[0], dates[1]);
|
---|
471 | break;
|
---|
472 | default:
|
---|
473 | Logging.warn("Unable to parse time: " + entry.getValue());
|
---|
474 | }
|
---|
475 | break;
|
---|
476 | case "bbox":
|
---|
477 | try {
|
---|
478 | csQuery.inBbox(new Bounds(entry.getValue(), ","));
|
---|
479 | } catch (IllegalArgumentException e) {
|
---|
480 | throw new ChangesetQueryUrlException(e);
|
---|
481 | }
|
---|
482 | break;
|
---|
483 | case "changesets":
|
---|
484 | try {
|
---|
485 | csQuery.forChangesetIds(parseLongs(entry.getValue()));
|
---|
486 | } catch (NumberFormatException e) {
|
---|
487 | throw new ChangesetQueryUrlException(e);
|
---|
488 | }
|
---|
489 | break;
|
---|
490 | default:
|
---|
491 | throw new ChangesetQueryUrlException(
|
---|
492 | tr("Unsupported parameter ''{0}'' in changeset query string", k));
|
---|
493 | }
|
---|
494 | }
|
---|
495 | return csQuery;
|
---|
496 | }
|
---|
497 |
|
---|
498 | protected Map<String, String> createMapFromQueryString(String query) {
|
---|
499 | Map<String, String> queryParams = new HashMap<>();
|
---|
500 | String[] keyValuePairs = query.split("&");
|
---|
501 | for (String keyValuePair: keyValuePairs) {
|
---|
502 | String[] kv = keyValuePair.split("=");
|
---|
503 | queryParams.put(kv[0], kv.length > 1 ? kv[1] : "");
|
---|
504 | }
|
---|
505 | return queryParams;
|
---|
506 | }
|
---|
507 |
|
---|
508 | /**
|
---|
509 | * Parses the changeset query given as URL query parameters and replies a {@link ChangesetQuery}.
|
---|
510 | *
|
---|
511 | * <code>query</code> is the query part of a API url for querying changesets,
|
---|
512 | * see <a href="http://wiki.openstreetmap.org/wiki/API_v0.6#Query:_GET_.2Fapi.2F0.6.2Fchangesets">OSM API</a>.
|
---|
513 | *
|
---|
514 | * Example for an query string:<br>
|
---|
515 | * <pre>
|
---|
516 | * uid=1234&open=true
|
---|
517 | * </pre>
|
---|
518 | *
|
---|
519 | * @param query the query string. If null, an empty query (identical to a query for all changesets) is assumed
|
---|
520 | * @return the changeset query
|
---|
521 | * @throws ChangesetQueryUrlException if the query string doesn't represent a legal query for changesets
|
---|
522 | */
|
---|
523 | public ChangesetQuery parse(String query) throws ChangesetQueryUrlException {
|
---|
524 | if (query == null)
|
---|
525 | return new ChangesetQuery();
|
---|
526 | String apiQuery = query.trim();
|
---|
527 | if (apiQuery.isEmpty())
|
---|
528 | return new ChangesetQuery();
|
---|
529 | return createFromMap(createMapFromQueryString(apiQuery));
|
---|
530 | }
|
---|
531 | }
|
---|
532 | }
|
---|