1 | // License: GPL. See LICENSE file for details.
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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.util.ArrayList;
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7 | import java.util.Collection;
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8 | import java.util.HashMap;
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9 | import java.util.List;
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10 | import java.util.Map;
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11 |
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12 | import org.openstreetmap.josm.Main;
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13 | import org.openstreetmap.josm.data.osm.Changeset;
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14 | import org.openstreetmap.josm.data.osm.DataSet;
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15 | import org.openstreetmap.josm.data.osm.Node;
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16 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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17 | import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
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18 | import org.openstreetmap.josm.data.osm.PrimitiveId;
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19 | import org.openstreetmap.josm.data.osm.Relation;
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20 | import org.openstreetmap.josm.data.osm.RelationMember;
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21 | import org.openstreetmap.josm.data.osm.RelationMemberData;
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22 | import org.openstreetmap.josm.data.osm.SimplePrimitiveId;
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23 | import org.openstreetmap.josm.data.osm.Way;
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24 |
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25 | /**
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26 | * Abstract Reader, allowing other implementations than OsmReader (PbfReader in PBF plugin for example)
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27 | * @author Vincent
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28 | *
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29 | */
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30 | public abstract class AbstractReader {
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31 |
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32 | /**
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33 | * The dataset to add parsed objects to.
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34 | */
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35 | protected DataSet ds = new DataSet();
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36 |
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37 | protected Changeset uploadChangeset;
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38 |
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39 | /** the map from external ids to read OsmPrimitives. External ids are
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40 | * longs too, but in contrast to internal ids negative values are used
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41 | * to identify primitives unknown to the OSM server
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42 | */
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43 | protected final Map<PrimitiveId, OsmPrimitive> externalIdMap = new HashMap<PrimitiveId, OsmPrimitive>();
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44 |
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45 | /**
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46 | * Data structure for the remaining way objects
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47 | */
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48 | protected final Map<Long, Collection<Long>> ways = new HashMap<Long, Collection<Long>>();
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49 |
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50 | /**
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51 | * Data structure for relation objects
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52 | */
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53 | protected final Map<Long, Collection<RelationMemberData>> relations = new HashMap<Long, Collection<RelationMemberData>>();
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54 |
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55 | /**
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56 | * Replies the parsed data set
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57 | *
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58 | * @return the parsed data set
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59 | */
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60 | public DataSet getDataSet() {
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61 | return ds;
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62 | }
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63 |
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64 | /**
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65 | * Processes the parsed nodes after parsing. Just adds them to
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66 | * the dataset
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67 | *
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68 | */
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69 | protected void processNodesAfterParsing() {
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70 | for (OsmPrimitive primitive: externalIdMap.values()) {
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71 | if (primitive instanceof Node) {
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72 | this.ds.addPrimitive(primitive);
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73 | }
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74 | }
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75 | }
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76 |
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77 | /**
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78 | * Processes the ways after parsing. Rebuilds the list of nodes of each way and
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79 | * adds the way to the dataset
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80 | *
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81 | * @throws IllegalDataException thrown if a data integrity problem is detected
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82 | */
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83 | protected void processWaysAfterParsing() throws IllegalDataException{
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84 | for (Long externalWayId: ways.keySet()) {
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85 | Way w = (Way)externalIdMap.get(new SimplePrimitiveId(externalWayId, OsmPrimitiveType.WAY));
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86 | List<Node> wayNodes = new ArrayList<Node>();
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87 | for (long id : ways.get(externalWayId)) {
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88 | Node n = (Node)externalIdMap.get(new SimplePrimitiveId(id, OsmPrimitiveType.NODE));
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89 | if (n == null) {
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90 | if (id <= 0)
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91 | throw new IllegalDataException (
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92 | tr("Way with external ID ''{0}'' includes missing node with external ID ''{1}''.",
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93 | externalWayId,
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94 | id));
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95 | // create an incomplete node if necessary
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96 | //
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97 | n = (Node)ds.getPrimitiveById(id,OsmPrimitiveType.NODE);
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98 | if (n == null) {
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99 | n = new Node(id);
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100 | ds.addPrimitive(n);
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101 | }
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102 | }
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103 | if (n.isDeleted()) {
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104 | Main.info(tr("Deleted node {0} is part of way {1}", id, w.getId()));
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105 | } else {
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106 | wayNodes.add(n);
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107 | }
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108 | }
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109 | w.setNodes(wayNodes);
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110 | if (w.hasIncompleteNodes()) {
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111 | Main.info(tr("Way {0} with {1} nodes has incomplete nodes because at least one node was missing in the loaded data.",
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112 | externalWayId, w.getNodesCount()));
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113 | }
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114 | ds.addPrimitive(w);
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115 | }
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116 | }
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117 |
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118 | /**
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119 | * Completes the parsed relations with its members.
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120 | *
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121 | * @throws IllegalDataException thrown if a data integrity problem is detected, i.e. if a
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122 | * relation member refers to a local primitive which wasn't available in the data
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123 | *
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124 | */
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125 | protected void processRelationsAfterParsing() throws IllegalDataException {
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126 |
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127 | // First add all relations to make sure that when relation reference other relation, the referenced will be already in dataset
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128 | for (Long externalRelationId : relations.keySet()) {
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129 | Relation relation = (Relation) externalIdMap.get(
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130 | new SimplePrimitiveId(externalRelationId, OsmPrimitiveType.RELATION)
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131 | );
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132 | ds.addPrimitive(relation);
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133 | }
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134 |
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135 | for (Long externalRelationId : relations.keySet()) {
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136 | Relation relation = (Relation) externalIdMap.get(
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137 | new SimplePrimitiveId(externalRelationId, OsmPrimitiveType.RELATION)
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138 | );
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139 | List<RelationMember> relationMembers = new ArrayList<RelationMember>();
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140 | for (RelationMemberData rm : relations.get(externalRelationId)) {
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141 | OsmPrimitive primitive = null;
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142 |
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143 | // lookup the member from the map of already created primitives
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144 | primitive = externalIdMap.get(new SimplePrimitiveId(rm.getMemberId(), rm.getMemberType()));
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145 |
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146 | if (primitive == null) {
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147 | if (rm.getMemberId() <= 0)
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148 | // relation member refers to a primitive with a negative id which was not
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149 | // found in the data. This is always a data integrity problem and we abort
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150 | // with an exception
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151 | //
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152 | throw new IllegalDataException(
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153 | tr("Relation with external id ''{0}'' refers to a missing primitive with external id ''{1}''.",
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154 | externalRelationId,
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155 | rm.getMemberId()));
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156 |
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157 | // member refers to OSM primitive which was not present in the parsed data
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158 | // -> create a new incomplete primitive and add it to the dataset
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159 | //
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160 | primitive = ds.getPrimitiveById(rm.getMemberId(), rm.getMemberType());
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161 | if (primitive == null) {
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162 | switch (rm.getMemberType()) {
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163 | case NODE:
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164 | primitive = new Node(rm.getMemberId()); break;
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165 | case WAY:
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166 | primitive = new Way(rm.getMemberId()); break;
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167 | case RELATION:
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168 | primitive = new Relation(rm.getMemberId()); break;
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169 | default: throw new AssertionError(); // can't happen
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170 | }
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171 |
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172 | ds.addPrimitive(primitive);
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173 | externalIdMap.put(new SimplePrimitiveId(rm.getMemberId(), rm.getMemberType()), primitive);
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174 | }
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175 | }
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176 | if (primitive.isDeleted()) {
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177 | Main.info(tr("Deleted member {0} is used by relation {1}", primitive.getId(), relation.getId()));
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178 | } else {
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179 | relationMembers.add(new RelationMember(rm.getRole(), primitive));
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180 | }
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181 | }
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182 | relation.setMembers(relationMembers);
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183 | }
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184 | }
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185 |
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186 | protected void processChangesetAfterParsing() {
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187 | if (uploadChangeset != null) {
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188 | for (Map.Entry<String, String> e : uploadChangeset.getKeys().entrySet()) {
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189 | ds.addChangeSetTag(e.getKey(), e.getValue());
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190 | }
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191 | }
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192 | }
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193 |
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194 | protected final void prepareDataSet() throws IllegalDataException {
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195 | try {
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196 | ds.beginUpdate();
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197 | processNodesAfterParsing();
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198 | processWaysAfterParsing();
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199 | processRelationsAfterParsing();
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200 | processChangesetAfterParsing();
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201 | } finally {
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202 | ds.endUpdate();
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203 | }
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204 | }
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205 | }
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