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