/**
* 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.api.actions.api.where;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.struts2.rest.DefaultHttpHeaders;
import org.onebusaway.api.actions.api.ApiActionSupport;
import org.onebusaway.api.model.transit.BeanFactoryV2;
import org.onebusaway.collections.Max;
import org.onebusaway.exceptions.ServiceException;
import org.onebusaway.geospatial.model.CoordinatePoint;
import org.onebusaway.presentation.impl.StackInterceptor.AddToStack;
import org.onebusaway.transit_data.model.ListBean;
import org.onebusaway.transit_data.model.realtime.CurrentVehicleEstimateBean;
import org.onebusaway.transit_data.model.realtime.CurrentVehicleEstimateQueryBean;
import org.onebusaway.transit_data.model.realtime.CurrentVehicleEstimateQueryBean.Record;
import org.onebusaway.transit_data.services.TransitDataService;
import org.springframework.beans.factory.annotation.Autowired;
import com.opensymphony.xwork2.validator.annotations.RequiredFieldValidator;
@AddToStack("query")
public class EstimateCurrentVehicleAction extends ApiActionSupport {
private static final long serialVersionUID = 1L;
private static final int V2 = 2;
@Autowired
private TransitDataService _service;
private CurrentVehicleEstimateQueryBean _query = new CurrentVehicleEstimateQueryBean();
private String _data;
public EstimateCurrentVehicleAction() {
super(V2);
}
public CurrentVehicleEstimateQueryBean getQuery() {
return _query;
}
public void setQuery(CurrentVehicleEstimateQueryBean query) {
_query = query;
}
@RequiredFieldValidator(message = Messages.MISSING_REQUIRED_FIELD)
public void setData(String data) {
_data = data;
}
public String getData() {
return _data;
}
public DefaultHttpHeaders index() throws IOException, ServiceException {
if (!isVersion(V2))
return setUnknownVersionResponse();
if (hasErrors())
return setValidationErrorsResponse();
fillInQuery();
if (hasErrors())
return setValidationErrorsResponse();
BeanFactoryV2 factory = getBeanFactoryV2();
ListBean<CurrentVehicleEstimateBean> estimates = _service.getCurrentVehicleEstimates(_query);
return setOkResponse(factory.getCurrentVehicleEstimates(estimates));
}
private void fillInQuery() {
List<CurrentVehicleEstimateQueryBean.Record> records = new ArrayList<CurrentVehicleEstimateQueryBean.Record>();
Max<Record> max = new Max<Record>();
for (String record : _data.split("\\|")) {
String[] tokens = record.split(",");
if (tokens.length != 4) {
addFieldError("data", Messages.INVALID_FIELD_VALUE);
return;
}
try {
long t = Long.parseLong(tokens[0]);
double lat = Double.parseDouble(tokens[1]);
double lon = Double.parseDouble(tokens[2]);
double accuracy = Double.parseDouble(tokens[3]);
Record r = new Record();
r.setTimestamp(t);
r.setLocation(new CoordinatePoint(lat, lon));
r.setAccuracy(accuracy);
records.add(r);
max.add(t, r);
} catch (NumberFormatException ex) {
addFieldError("data", Messages.INVALID_FIELD_VALUE);
return;
}
}
_query.setRecords(records);
if (records.isEmpty()) {
addFieldError("data", Messages.INVALID_FIELD_VALUE);
return;
}
_query.setMostRecentLocation(max.getMaxElement().getLocation());
}
}