Java tutorial
/** * Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.onebusaway.webapp.impl; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import java.text.ParseException; import java.util.Date; import java.util.List; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import org.onebusaway.exceptions.ServiceException; import org.onebusaway.geospatial.model.CoordinatePoint; import org.onebusaway.transit_data.model.AgencyWithCoverageBean; import org.onebusaway.transit_data.model.ListBean; import org.onebusaway.transit_data.model.RouteBean; import org.onebusaway.transit_data.model.RoutesAndStopsBean; import org.onebusaway.transit_data.model.RoutesBean; import org.onebusaway.transit_data.model.SearchQueryBean; import org.onebusaway.transit_data.model.StopBean; import org.onebusaway.transit_data.model.StopScheduleBean; import org.onebusaway.transit_data.model.StopWithArrivalsAndDeparturesBean; import org.onebusaway.transit_data.model.StopsBean; import org.onebusaway.transit_data.model.StopsForRouteBean; import org.onebusaway.transit_data.model.oba.LocalSearchResult; import org.onebusaway.transit_data.model.oba.MinTransitTimeResult; import org.onebusaway.transit_data.model.oba.MinTravelTimeToStopsBean; import org.onebusaway.transit_data.model.oba.TimedPlaceBean; import org.onebusaway.transit_data.model.tripplanning.ConstraintsBean; import org.onebusaway.transit_data.model.tripplanning.ItinerariesBean; import org.onebusaway.transit_data.model.tripplanning.TransitShedConstraintsBean; import org.onebusaway.transit_data.model.trips.TripDetailsBean; import org.onebusaway.transit_data.model.trips.TripsForBoundsQueryBean; import org.onebusaway.users.client.model.UserBean; import org.onebusaway.webapp.gwt.where_library.rpc.WebappService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.context.WebApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; import com.google.gwt.user.server.rpc.RemoteServiceServlet; import com.google.gwt.user.server.rpc.SerializationPolicy; import com.google.gwt.user.server.rpc.SerializationPolicyLoader; public class WebappServiceServletImpl extends RemoteServiceServlet implements WebappService { private static final long serialVersionUID = 1L; private WebappService _service; public void init(ServletConfig config) throws ServletException { super.init(config); WebApplicationContext context = WebApplicationContextUtils .getWebApplicationContext(config.getServletContext()); context.getAutowireCapableBeanFactory().autowireBean(this); } protected SerializationPolicy doGetSerializationPolicy(HttpServletRequest request, String moduleBaseURL, String strongName) { return customLoadSerializationPolicy(this, request, moduleBaseURL, strongName); // return super.doGetSerializationPolicy(request, moduleBaseURL, // strongName); } @Override public List<AgencyWithCoverageBean> getAgencies() throws ServiceException { return _service.getAgencies(); } @Autowired public void setService(WebappService service) { _service = service; } @Override public StopWithArrivalsAndDeparturesBean getArrivalsByStopId(String stopId) throws ServiceException { return _service.getArrivalsByStopId(stopId); } @Override public UserBean getCurrentUser() { return _service.getCurrentUser(); } @Override public UserBean setDefaultLocationForUser(String locationName, double lat, double lon) { return _service.setDefaultLocationForUser(locationName, lat, lon); } @Override public UserBean clearDefaultLocationForUser() { return _service.clearDefaultLocationForUser(); } @Override public MinTransitTimeResult getMinTravelTimeToStopsFrom(CoordinatePoint location, long time, TransitShedConstraintsBean constraints, int timeSegmentSize) throws ServiceException { return _service.getMinTravelTimeToStopsFrom(location, time, constraints, timeSegmentSize); } @Override public RouteBean getRouteForId(String routeId) throws ServiceException { return _service.getRouteForId(routeId); } @Override public RoutesBean getRoutes(SearchQueryBean query) throws ServiceException { return _service.getRoutes(query); } @Override public StopScheduleBean getScheduleForStop(String stopId, Date date) throws ServiceException { return _service.getScheduleForStop(stopId, date); } @Override public RoutesAndStopsBean getRoutesAndStops(SearchQueryBean query) throws ServiceException { return _service.getRoutesAndStops(query); } @Override public StopsBean getStops(SearchQueryBean query) throws ServiceException { return _service.getStops(query); } @Override public StopBean getStop(String stopId) throws ServiceException { return _service.getStop(stopId); } @Override public StopsForRouteBean getStopsForRoute(String routeId) throws ServiceException { return _service.getStopsForRoute(routeId); } @Override public ListBean<TripDetailsBean> getTripsForBounds(TripsForBoundsQueryBean query) { return _service.getTripsForBounds(query); } @Override public ItinerariesBean getTripsBetween(CoordinatePoint from, CoordinatePoint to, long time, ConstraintsBean constraints) throws ServiceException { return _service.getTripsBetween(from, to, time, constraints); } @Override public List<TimedPlaceBean> getLocalPathsToStops(ConstraintsBean constraints, MinTravelTimeToStopsBean travelTimes, List<LocalSearchResult> localResults) throws ServiceException { return _service.getLocalPathsToStops(constraints, travelTimes, localResults); } /**** * ****/ /** * Used by HybridServiceServlet. */ private static SerializationPolicy customLoadSerializationPolicy(HttpServlet servlet, HttpServletRequest request, String moduleBaseURL, String strongName) { // The request can tell you the path of the web app relative to the // container root. String contextPath = request.getContextPath(); String modulePath = null; if (moduleBaseURL != null) { try { modulePath = new URL(moduleBaseURL).getPath(); } catch (MalformedURLException ex) { // log the information, we will default servlet.log("Malformed moduleBaseURL: " + moduleBaseURL, ex); } } SerializationPolicy serializationPolicy = null; /* * Check that the module path must be in the same web app as the servlet * itself. If you need to implement a scheme different than this, override * this method. */ if (modulePath == null) { String message = "ERROR: The module path requested, " + modulePath + ", is not in the same web application as this servlet, " + contextPath + ". Your module may not be properly configured or your client and server code maybe out of date."; servlet.log(message, null); } else { // TODO : Hack for Nokia demo // /Users/bdferris/Documents/Aptana%20Studio%20Workspace/nokia-hello-world/ if (modulePath.endsWith("nokia-hello-world/")) modulePath = "/where/mobile/"; if (!modulePath.startsWith(contextPath)) modulePath = contextPath + modulePath; // Strip off the context path from the module base URL. It should be a // strict prefix. String contextRelativePath = modulePath.substring(contextPath.length()); String serializationPolicyFilePath = SerializationPolicyLoader .getSerializationPolicyFileName(contextRelativePath + strongName); // Open the RPC resource file and read its contents. InputStream is = servlet.getServletContext().getResourceAsStream(serializationPolicyFilePath); try { if (is != null) { try { serializationPolicy = SerializationPolicyLoader.loadFromStream(is, null); } catch (ParseException e) { servlet.log("ERROR: Failed to parse the policy file '" + serializationPolicyFilePath + "'", e); } catch (IOException e) { servlet.log("ERROR: Could not read the policy file '" + serializationPolicyFilePath + "'", e); } } else { String message = "ERROR: The serialization policy file '" + serializationPolicyFilePath + "' was not found; did you forget to include it in this deployment?"; servlet.log(message, null); } } finally { if (is != null) { try { is.close(); } catch (IOException e) { // Ignore this error } } } } return serializationPolicy; } }