source: josm/trunk/src/org/openstreetmap/josm/actions/downloadtasks/DownloadOsmChangeTask.java@ 12635

Last change on this file since 12635 was 12635, checked in by Don-vip, 7 years ago

see #15182 - checkstyle
  • Property svn:eol-style set to native
File size: 8.9 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions.downloadtasks;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.util.Date;
7import java.util.HashMap;
8import java.util.Iterator;
9import java.util.Map;
10import java.util.Map.Entry;
11import java.util.concurrent.Future;
12import java.util.concurrent.RejectedExecutionException;
13import java.util.regex.Matcher;
14import java.util.regex.Pattern;
15
16import org.openstreetmap.josm.data.Bounds;
17import org.openstreetmap.josm.data.osm.DataSet;
18import org.openstreetmap.josm.data.osm.Node;
19import org.openstreetmap.josm.data.osm.NodeData;
20import org.openstreetmap.josm.data.osm.OsmPrimitive;
21import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
22import org.openstreetmap.josm.data.osm.PrimitiveData;
23import org.openstreetmap.josm.data.osm.PrimitiveId;
24import org.openstreetmap.josm.data.osm.RelationData;
25import org.openstreetmap.josm.data.osm.WayData;
26import org.openstreetmap.josm.data.osm.history.History;
27import org.openstreetmap.josm.data.osm.history.HistoryDataSet;
28import org.openstreetmap.josm.data.osm.history.HistoryDataSetListener;
29import org.openstreetmap.josm.data.osm.history.HistoryNode;
30import org.openstreetmap.josm.data.osm.history.HistoryOsmPrimitive;
31import org.openstreetmap.josm.data.osm.history.HistoryRelation;
32import org.openstreetmap.josm.data.osm.history.HistoryWay;
33import org.openstreetmap.josm.gui.MainApplication;
34import org.openstreetmap.josm.gui.history.HistoryLoadTask;
35import org.openstreetmap.josm.gui.progress.ProgressMonitor;
36import org.openstreetmap.josm.io.OsmApi;
37import org.openstreetmap.josm.io.OsmServerLocationReader;
38import org.openstreetmap.josm.io.OsmServerReader;
39import org.openstreetmap.josm.io.OsmTransferException;
40import org.openstreetmap.josm.tools.Logging;
41
42/**
43 * Task allowing to download OsmChange data (http://wiki.openstreetmap.org/wiki/OsmChange).
44 * @since 4530
45 */
46public class DownloadOsmChangeTask extends DownloadOsmTask {
47
48 private static final String OSM_WEBSITE_PATTERN = "https?://www\\.(osm|openstreetmap)\\.org/changeset/(\\p{Digit}+).*";
49
50 @Override
51 public String[] getPatterns() {
52 return new String[]{"https?://.*/api/0.6/changeset/\\p{Digit}+/download", // OSM API 0.6 changesets
53 OSM_WEBSITE_PATTERN, // OSM changesets
54 "https?://.*/.*\\.osc" // Remote .osc files
55 };
56 }
57
58 @Override
59 public String getTitle() {
60 return tr("Download OSM Change");
61 }
62
63 @Override
64 public Future<?> download(boolean newLayer, Bounds downloadArea,
65 ProgressMonitor progressMonitor) {
66 return null;
67 }
68
69 @Override
70 public Future<?> loadUrl(boolean newLayer, String url, ProgressMonitor progressMonitor) {
71 final Matcher matcher = Pattern.compile(OSM_WEBSITE_PATTERN).matcher(url);
72 if (matcher.matches()) {
73 url = OsmApi.getOsmApi().getBaseUrl() + "changeset/" + Long.parseLong(matcher.group(2)) + "/download";
74 }
75 downloadTask = new DownloadTask(newLayer, new OsmServerLocationReader(url), progressMonitor);
76 // Extract .osc filename from URL to set the new layer name
77 extractOsmFilename("https?://.*/(.*\\.osc)", url);
78 return MainApplication.worker.submit(downloadTask);
79 }
80
81 /**
82 * OsmChange download task.
83 */
84 protected class DownloadTask extends DownloadOsmTask.DownloadTask {
85
86 /**
87 * Constructs a new {@code DownloadTask}.
88 * @param newLayer if {@code true}, force download to a new layer
89 * @param reader OSM data reader
90 * @param progressMonitor progress monitor
91 */
92 public DownloadTask(boolean newLayer, OsmServerReader reader, ProgressMonitor progressMonitor) {
93 super(newLayer, reader, progressMonitor);
94 }
95
96 @Override
97 protected DataSet parseDataSet() throws OsmTransferException {
98 return reader.parseOsmChange(progressMonitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
99 }
100
101 @Override
102 protected void finish() {
103 super.finish();
104 if (isFailed() || isCanceled() || downloadedData == null)
105 return; // user canceled download or error occurred
106 try {
107 // A changeset does not contain all referred primitives, this is the map of incomplete ones
108 // For each incomplete primitive, we'll have to get its state at date it was referred
109 Map<OsmPrimitive, Date> toLoad = new HashMap<>();
110 for (OsmPrimitive p : downloadedData.allNonDeletedPrimitives()) {
111 if (p.isIncomplete()) {
112 Date timestamp = null;
113 for (OsmPrimitive ref : p.getReferrers()) {
114 if (!ref.isTimestampEmpty()) {
115 timestamp = ref.getTimestamp();
116 break;
117 }
118 }
119 toLoad.put(p, timestamp);
120 }
121 }
122 if (isCanceled()) return;
123 // Let's load all required history
124 MainApplication.worker.submit(new HistoryLoaderAndListener(toLoad));
125 } catch (RejectedExecutionException e) {
126 rememberException(e);
127 setFailed(true);
128 }
129 }
130 }
131
132 /**
133 * Loads history and updates incomplete primitives.
134 */
135 private static final class HistoryLoaderAndListener extends HistoryLoadTask implements HistoryDataSetListener {
136
137 private final Map<OsmPrimitive, Date> toLoad;
138
139 private HistoryLoaderAndListener(Map<OsmPrimitive, Date> toLoad) {
140 this.toLoad = toLoad;
141 add(toLoad.keySet());
142 // Updating process is done after all history requests have been made
143 HistoryDataSet.getInstance().addHistoryDataSetListener(this);
144 }
145
146 @Override
147 public void historyUpdated(HistoryDataSet source, PrimitiveId id) {
148 Map<OsmPrimitive, Date> toLoadNext = new HashMap<>();
149 for (Iterator<Entry<OsmPrimitive, Date>> it = toLoad.entrySet().iterator(); it.hasNext();) {
150 Entry<OsmPrimitive, Date> entry = it.next();
151 OsmPrimitive p = entry.getKey();
152 History history = source.getHistory(p.getPrimitiveId());
153 Date date = entry.getValue();
154 // If the history has been loaded and a timestamp is known
155 if (history != null && date != null) {
156 // Lookup for the primitive version at the specified timestamp
157 HistoryOsmPrimitive hp = history.getByDate(date);
158 if (hp != null) {
159 PrimitiveData data;
160
161 switch (p.getType()) {
162 case NODE:
163 data = ((HistoryNode) hp).fillPrimitiveData(new NodeData());
164 break;
165 case WAY:
166 data = ((HistoryWay) hp).fillPrimitiveData(new WayData());
167 // Find incomplete nodes to load at next run
168 for (Long nodeId : ((HistoryWay) hp).getNodes()) {
169 if (p.getDataSet().getPrimitiveById(nodeId, OsmPrimitiveType.NODE) == null) {
170 Node n = new Node(nodeId);
171 p.getDataSet().addPrimitive(n);
172 toLoadNext.put(n, date);
173 }
174 }
175 break;
176 case RELATION:
177 data = ((HistoryRelation) hp).fillPrimitiveData(new RelationData());
178 break;
179 default: throw new AssertionError("Unknown primitive type");
180 }
181
182 // Load the history data
183 try {
184 p.load(data);
185 // Forget this primitive
186 it.remove();
187 } catch (AssertionError e) {
188 Logging.log(Logging.LEVEL_ERROR, "Cannot load "+p+':', e);
189 }
190 }
191 }
192 }
193 source.removeHistoryDataSetListener(this);
194 if (toLoadNext.isEmpty()) {
195 // No more primitive to update. Processing is finished
196 // Be sure all updated primitives are correctly drawn
197 MainApplication.getMap().repaint();
198 } else {
199 // Some primitives still need to be loaded
200 // Let's load all required history
201 MainApplication.worker.submit(new HistoryLoaderAndListener(toLoadNext));
202 }
203 }
204
205 @Override
206 public void historyDataSetCleared(HistoryDataSet source) {
207 // Do nothing
208 }
209 }
210}
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