001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.io; 003 004import java.util.Set; 005import java.util.function.Function; 006 007import org.openstreetmap.josm.data.osm.OsmPrimitiveType; 008import org.openstreetmap.josm.gui.preferences.server.OverpassServerPreference; 009import org.openstreetmap.josm.tools.Utils; 010 011/** 012 * Retrieves a set of {@link org.openstreetmap.josm.data.osm.OsmPrimitive}s from an Overpass API server. 013 * 014 * @since 9241 015 */ 016class MultiFetchOverpassObjectReader extends MultiFetchServerObjectReader { 017 018 @Override 019 protected String buildRequestString(final OsmPrimitiveType type, Set<Long> idPackage) { 020 final Function<Long, Object> toOverpassExpression = x -> type.getAPIName() + '(' + x + ");>;"; 021 final String query = '(' + Utils.join("", Utils.transform(idPackage, toOverpassExpression)) + ");out meta;"; 022 return "interpreter?data=" + Utils.encodeUrl(query); 023 } 024 025 @Override 026 protected String getBaseUrl() { 027 return OverpassServerPreference.getOverpassServer(); 028 } 029 030 @Override 031 protected boolean recursesDown() { 032 // see https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL#Recurse_down_.28.3E.29 for documentation 033 // accomplished using >; in the query string above 034 return true; 035 } 036}