[2512] | 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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[10212] | 6 | import java.io.IOException;
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[2512] | 7 | import java.io.InputStream;
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[2852] | 8 | import java.text.MessageFormat;
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[2512] | 9 |
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| 10 | import org.openstreetmap.josm.data.osm.DataSet;
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| 11 | import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
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| 12 | import org.openstreetmap.josm.data.osm.history.HistoryDataSet;
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| 13 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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[2852] | 14 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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[10212] | 15 | import org.xml.sax.SAXException;
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[2512] | 16 |
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| 17 | /**
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[5835] | 18 | * Reads the history of an {@link org.openstreetmap.josm.data.osm.OsmPrimitive} from the OSM API server.
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[2512] | 19 | *
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| 20 | */
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| 21 | public class OsmServerHistoryReader extends OsmServerReader {
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| 22 |
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[9078] | 23 | private final OsmPrimitiveType primitiveType;
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| 24 | private final long id;
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[2512] | 25 |
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| 26 | /**
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| 27 | * constructor
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| 28 | *
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| 29 | * @param type the type of the primitive whose history is to be fetched from the server.
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| 30 | * Must not be null.
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| 31 | * @param id the id of the primitive
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| 32 | *
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[8291] | 33 | * @throws IllegalArgumentException if type is null
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[2512] | 34 | */
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[8291] | 35 | public OsmServerHistoryReader(OsmPrimitiveType type, long id) {
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[2852] | 36 | CheckParameterUtil.ensureParameterNotNull(type, "type");
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[2512] | 37 | if (id < 0)
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[2852] | 38 | throw new IllegalArgumentException(MessageFormat.format("Parameter ''{0}'' >= 0 expected. Got ''{1}''.", "id", id));
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[2512] | 39 | this.primitiveType = type;
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| 40 | this.id = id;
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| 41 | }
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| 42 |
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| 43 | /**
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| 44 | * don't use - not implemented!
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| 45 | *
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| 46 | */
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| 47 | @Override
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| 48 | public DataSet parseOsm(ProgressMonitor progressMonitor) throws OsmTransferException {
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| 49 | return null;
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| 50 | }
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| 51 |
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| 52 | /**
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| 53 | * Fetches the history from the OSM API and parses it
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[9231] | 54 | * @param progressMonitor progress monitor
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[2512] | 55 | *
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| 56 | * @return the data set with the parsed history data
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[8291] | 57 | * @throws OsmTransferException if an exception occurs
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[2512] | 58 | */
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| 59 | public HistoryDataSet parseHistory(ProgressMonitor progressMonitor) throws OsmTransferException {
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| 60 | progressMonitor.beginTask("");
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| 61 | try {
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| 62 | progressMonitor.indeterminateSubTask(tr("Contacting OSM Server..."));
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[11262] | 63 | final String urlStr = primitiveType.getAPIName() + '/' + id + "/history";
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[2512] | 64 |
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[11262] | 65 | try (InputStream in = getInputStream(urlStr, progressMonitor.createSubTaskMonitor(1, true))) {
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[7033] | 66 | if (in == null)
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| 67 | return null;
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| 68 | progressMonitor.indeterminateSubTask(tr("Downloading history..."));
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| 69 | OsmHistoryReader reader = new OsmHistoryReader(in);
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| 70 | return reader.parse(progressMonitor.createSubTaskMonitor(1, true));
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| 71 | }
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[8510] | 72 | } catch (OsmTransferException e) {
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[2512] | 73 | throw e;
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[10212] | 74 | } catch (IOException | SAXException e) {
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[2512] | 75 | if (cancel)
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| 76 | return null;
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| 77 | throw new OsmTransferException(e);
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| 78 | } finally {
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| 79 | progressMonitor.finishTask();
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[5874] | 80 | activeConnection = null;
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[2512] | 81 | }
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| 82 | }
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| 83 | }
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