123 lines
4.5 KiB
C++
123 lines
4.5 KiB
C++
/*
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open source routing machine
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Copyright (C) Dennis Luxen, 2010
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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#ifndef NearestPlugin_H_
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#define NearestPlugin_H_
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#include "BasePlugin.h"
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#include "../DataStructures/NodeInformationHelpDesk.h"
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#include "../Server/DataStructures/QueryObjectsStorage.h"
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#include "../Util/StringUtil.h"
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/*
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* This Plugin locates the nearest point on a street in the road network for a given coordinate.
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*/
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class NearestPlugin : public BasePlugin {
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public:
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NearestPlugin(QueryObjectsStorage * objects )
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:
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m_query_objects(objects),
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descriptor_string("nearest")
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{
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descriptorTable.insert(std::make_pair("" , 0)); //default descriptor
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descriptorTable.insert(std::make_pair("json", 1));
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}
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const std::string & GetDescriptor() const { return descriptor_string; }
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void HandleRequest(const RouteParameters & routeParameters, http::Reply& reply) {
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//check number of parameters
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if(!routeParameters.coordinates.size()) {
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reply = http::Reply::stockReply(http::Reply::badRequest);
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return;
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}
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if(false == checkCoord(routeParameters.coordinates[0])) {
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reply = http::Reply::stockReply(http::Reply::badRequest);
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return;
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}
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NodeInformationHelpDesk * nodeHelpDesk = m_query_objects->nodeHelpDesk;
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//query to helpdesk
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PhantomNode result;
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nodeHelpDesk->FindPhantomNodeForCoordinate(
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routeParameters.coordinates[0],
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result,
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routeParameters.zoomLevel
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);
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std::string temp_string;
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//json
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if("" != routeParameters.jsonpParameter) {
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reply.content += routeParameters.jsonpParameter;
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reply.content += "(";
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}
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reply.status = http::Reply::ok;
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reply.content += ("{");
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reply.content += ("\"version\":0.3,");
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reply.content += ("\"status\":");
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if(UINT_MAX != result.edgeBasedNode) {
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reply.content += "0,";
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} else {
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reply.content += "207,";
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}
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reply.content += ("\"mapped_coordinate\":");
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reply.content += "[";
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if(UINT_MAX != result.edgeBasedNode) {
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convertInternalLatLonToString(result.location.lat, temp_string);
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reply.content += temp_string;
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convertInternalLatLonToString(result.location.lon, temp_string);
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reply.content += ",";
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reply.content += temp_string;
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}
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reply.content += "],";
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reply.content += "\"name\":\"";
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if(UINT_MAX != result.edgeBasedNode) {
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m_query_objects->GetName(result.nodeBasedEdgeNameID, temp_string);
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reply.content += temp_string;
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}
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reply.content += "\"";
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reply.content += ",\"transactionId\":\"OSRM Routing Engine JSON Nearest (v0.3)\"";
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reply.content += ("}");
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reply.headers.resize(3);
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if("" != routeParameters.jsonpParameter) {
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reply.content += ")";
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reply.headers[1].name = "Content-Type";
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reply.headers[1].value = "text/javascript";
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reply.headers[2].name = "Content-Disposition";
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reply.headers[2].value = "attachment; filename=\"location.js\"";
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} else {
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reply.headers[1].name = "Content-Type";
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reply.headers[1].value = "application/x-javascript";
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reply.headers[2].name = "Content-Disposition";
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reply.headers[2].value = "attachment; filename=\"location.json\"";
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}
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reply.headers[0].name = "Content-Length";
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intToString(reply.content.size(), temp_string);
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reply.headers[0].value = temp_string;
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}
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private:
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QueryObjectsStorage * m_query_objects;
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HashTable<std::string, unsigned> descriptorTable;
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std::string descriptor_string;
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};
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#endif /* NearestPlugin_H_ */
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