DataSetUpdater.java

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.plugins.opendata.core.datasets;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.command.SequenceCommand;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.Relation;
import org.openstreetmap.josm.data.osm.Way;
import org.openstreetmap.josm.plugins.opendata.core.OdConstants;

public abstract class DataSetUpdater {

    public static final void updateDataSet(DataSet dataSet, AbstractDataSetHandler handler, File associatedFile) {
        if (dataSet != null && handler != null) {
            if (associatedFile != null) {
                handler.setAssociatedFile(associatedFile);
                long lastmodified = associatedFile.lastModified();
                if (lastmodified > 0) {
                    handler.setSourceDate(new SimpleDateFormat("yyyy-MM-dd").format(new Date(lastmodified)));
                }
            }
            if (!Main.pref.getBoolean(OdConstants.PREF_RAWDATA)) {
                handler.updateDataSet(dataSet);
            }
            handler.checkDataSetSource(dataSet);
            handler.checkNames(dataSet);
            // Replace multipolygons with single untagged member by their sole member
            for (Relation r : dataSet.getRelations()) {
                if (r.isMultipolygon() && r.getMembersCount() == 1) {
                    OsmPrimitive outer = r.getMember(0).getMember();
                    if (!outer.isTagged()) {
                        r.remove("type");
                        r.removeMember(0);
                        outer.setKeys(r.getKeys());
                        dataSet.removePrimitive(r);
                    }
                }
            }
            // Simplify ways geometries
            for (Way w : dataSet.getWays()) {
                SequenceCommand command = Main.main.menu.simplifyWay.simplifyWay(w, 0.25);
                if (command != null) {
                    Main.main.undoRedo.addNoRedraw(command);
                }
            }
        }
    }
}