public static String serializeCar(Car car) {
ObjectOutputStream oos = null;
Base64OutputStream b64 = null;
try {
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
oos = new ObjectOutputStream(byteArrayOut);
oos.writeObject(car);
oos.flush();
ByteArrayOutputStream out = new ByteArrayOutputStream();
b64 = new Base64OutputStream(out, Base64.DEFAULT);
b64.write(byteArrayOut.toByteArray());
b64.flush();
b64.close();
out.flush();
out.close();
String result = new String(out.toByteArray());
return result;
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} finally {
if (oos != null)
try {
b64.close();
oos.close();
} catch (IOException e) {
logger.warn(e.getMessage(), e);
}
}
return null;
}
public static Car instantiateCar(String object) {
if (object == null) return null;
ObjectInputStream ois = null;
try {
Base64InputStream b64 =
new Base64InputStream(new ByteArrayInputStream(object.getBytes()), Base64.DEFAULT);
ois = new ObjectInputStream(b64);
Car car = (Car) ois.readObject();
return car;
} catch (StreamCorruptedException e) {
logger.warn(e.getMessage(), e);
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} catch (ClassNotFoundException e) {
logger.warn(e.getMessage(), e);
} finally {
if (ois != null)
try {
ois.close();
} catch (IOException e) {
logger.warn(e.getMessage(), e);
}
}
return null;
}
public void getCarList() {
sensorDlProgress.setVisibility(View.VISIBLE);
sensorSpinner.setVisibility(View.GONE);
sensorRetryButton.setVisibility(View.GONE);
sensors = new ArrayList<Car>();
if (((SettingsActivity) getContext()).isConnectedToInternet()) {
try {
new SensorDownloadTask().execute().get();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
Toast.makeText(getContext(), "Could not retrieve cars from server", Toast.LENGTH_SHORT)
.show();
}
// TODO add possibility to update cache
// downloadSensors(true);
} else {
getCarsFromCache();
}
if (sensors.isEmpty()) {
logger.warn("Got no cars neither from server nor from cache.");
// TODO show warning that no cars were found i18n
Toast.makeText(
getContext(),
"Could not retrieve cars from server or local cache",
Toast.LENGTH_SHORT)
.show();
}
sensorDlProgress.setVisibility(View.GONE);
sensorSpinner.setVisibility(View.VISIBLE);
}
private void getCarsFromCache() {
File directory;
try {
directory = Util.resolveExternalStorageBaseFolder();
File f = new File(directory, CarManager.CAR_CACHE_FILE_NAME);
if (f.isFile()) {
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
String content = "";
String line = "";
while ((line = bufferedReader.readLine()) != null) {
content = content.concat(line);
}
bufferedReader.close();
JSONArray cars = new JSONArray(content);
addSensorsToList(cars);
}
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
}
private void addSensorsToList(JSONArray res) {
for (int i = 0; i < res.length(); i++) {
String typeString;
JSONObject properties;
String carId;
try {
typeString = ((JSONObject) res.get(i)).optString("type", "none");
properties = ((JSONObject) res.get(i)).getJSONObject("properties");
carId = properties.getString("id");
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
continue;
}
if (typeString.equals(SENSOR_TYPE)) {
try {
sensors.add(Car.fromJsonWithStrictEngineDisplacement(properties));
} catch (JSONException e) {
logger.warn(
String.format(
"Car '%s' not supported: %s", carId != null ? carId : "null", e.getMessage()));
}
}
}
SensorAdapter adapter = new SensorAdapter();
sensorSpinner.setAdapter(adapter);
int index = adapter.getInitialSelectedItem();
sensorSpinner.setSelection(index);
}
/**
* Use this method only to insert "fresh" measurements, not to recreate a Track from the database
* Use {@code insertMeasurement(ArrayList<Measurement> measurements)} instead Inserts measurments
* into the Track and into the database!
*
* @param measurement
* @throws TrackAlreadyFinishedException
* @throws MeasurementsException
*/
public void addMeasurement(Measurement measurement) throws TrackAlreadyFinishedException {
measurement.setTrack(Track.this);
this.measurements.add(measurement);
if (this.dbAdapter != null) {
try {
this.dbAdapter.insertNewMeasurement(measurement);
} catch (MeasurementsException e) {
logger.severe("This should never happen", e);
return;
}
} else {
logger.warn("DbAdapter was null! Could not insert measurement");
}
}
/**
* Creates a Track and adds its contents to the DB layer (adapter).
*
* @param json the input json object
* @param adapter the DB layer adapter
* @return the Track object
* @throws JSONException parsing fails or contains unexpected properties
* @throws ParseException if DateTime parsing fails
*/
public static Track fromJson(JSONObject json, DbAdapter adapter)
throws JSONException, ParseException {
JSONObject trackProperties = json.getJSONObject("properties");
Track t = Track.createRemoteTrack(trackProperties.getString("id"), adapter);
String trackName = "unnamed Track #" + t.getId();
try {
trackName = trackProperties.getString("name");
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
t.setName(trackName);
String description = "";
try {
description = trackProperties.getString("description");
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
t.setDescription(description);
JSONObject sensorProperties =
trackProperties.getJSONObject("sensor").getJSONObject("properties");
t.setCar(Car.fromJson(sensorProperties));
// include server properties tracks created, modified?
t.dbAdapter.updateTrack(t);
// Log.i("track_id",t.getId()+" "+((DbAdapterRemote)
// dbAdapter).trackExistsInDatabase(t.getId())+" "+dbAdapter.getNumberOfStoredTracks());
Measurement recycleMeasurement;
List<Measurement> measurements = new ArrayList<Measurement>();
JSONArray features = json.getJSONArray("features");
logger.info(
"Parsing measurements of track " + t.getRemoteID() + ". Count: " + features.length());
for (int j = 0; j < features.length(); j++) {
JSONObject measurementJsonObject = features.getJSONObject(j);
recycleMeasurement = Measurement.fromJson(measurementJsonObject);
recycleMeasurement.setTrack(t);
measurements.add(recycleMeasurement);
}
t.setMeasurementsAsArrayList(measurements);
logger.info("Storing measurements in database");
t.storeMeasurementsInDbAdapter();
return t;
}
/** @return the measurements */
public List<Measurement> getMeasurements() {
if ((measurements == null || measurements.isEmpty()) && dbAdapter != null) {
try {
this.measurements = dbAdapter.getAllMeasurementsForTrack(this);
} catch (TrackWithoutMeasurementsException e) {
logger.warn(e.getMessage(), e);
}
}
return measurements;
}
private void storeMeasurementsInDbAdapter() {
if (this.dbAdapter != null) {
for (Measurement measurement : measurements) {
try {
this.dbAdapter.insertMeasurement(measurement);
} catch (MeasurementsException e) {
logger.warn(e.getMessage(), e);
}
}
}
}
/**
* Returns the average co2 emission for the track.
*
* @return
*/
public double getCO2Average() {
double co2Average = 0.0;
try {
for (Measurement measurement : measurements) {
if (measurement.getProperty(CONSUMPTION) != null) {
co2Average =
co2Average
+ consumptionAlgorithm.calculateCO2FromConsumption(
measurement.getProperty(CONSUMPTION));
}
}
co2Average = co2Average / measurements.size();
} catch (FuelConsumptionException e) {
logger.warn(e.getMessage(), e);
}
return co2Average;
}
public double getFuelConsumptionPerHour() throws UnsupportedFuelTypeException {
if (consumptionPerHour == null) {
consumptionPerHour = 0.0;
int consideredCount = 0;
for (int i = 0; i < measurements.size(); i++) {
try {
consumptionPerHour =
consumptionPerHour + consumptionAlgorithm.calculateConsumption(measurements.get(i));
consideredCount++;
} catch (FuelConsumptionException e) {
logger.warn(e.getMessage());
}
}
consumptionPerHour = consumptionPerHour / consideredCount;
}
return consumptionPerHour;
}
protected String downloadSensors() throws Exception {
HttpGet getRequest = new HttpGet(ECApplication.BASE_URL + "/sensors");
getRequest.addHeader("Accept-Encoding", "application/json");
try {
HttpResponse response = HTTPClient.execute(getRequest);
String content = HTTPClient.readResponse(response.getEntity());
JSONObject parentObject = new JSONObject(content);
JSONArray res = (JSONArray) parentObject.get("sensors");
addSensorsToList(res);
} catch (Exception e) {
logger.warn(e.getMessage(), e);
throw e;
}
return "";
}
public class CarSelectionPreference extends DialogPreference {
public static final String SENSOR_TYPE = "car";
private static final Logger logger = Logger.getLogger(CarSelectionPreference.class);
private static final String DEFAULT_VALUE = "null";
private Car car;
private LinearLayout garageProgress;
private EditText modelEditText;
private EditText manufacturerEditText;
private EditText constructionYearEditText;
protected String carModel;
protected String carManufacturer;
protected String carConstructionYear;
protected String carFuelType;
protected String carEngineDisplacement;
private Spinner sensorSpinner;
private ProgressBar sensorDlProgress;
private Button sensorRetryButton;
protected List<Car> sensors;
private ScrollView garageForm;
private RadioButton gasolineRadioButton;
private RadioButton dieselRadioButton;
private EditText engineDisplacementEditText;
public CarSelectionPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setDialogLayoutResource(R.layout.my_garage_layout);
setPositiveButtonText(android.R.string.ok);
setNegativeButtonText(android.R.string.cancel);
setDialogIcon(null);
}
@Override
protected void onBindDialogView(View view) {
setupUIItems(view);
}
private void setupUIItems(View view) {
// TODO !fancy! search for sensors
garageForm = (ScrollView) view.findViewById(R.id.garage_form);
garageProgress = (LinearLayout) view.findViewById(R.id.addCarToGarage_status);
setupCarCreationItems(view);
sensorSpinner = (Spinner) view.findViewById(R.id.dashboard_current_sensor_spinner);
sensorSpinner.setOnItemSelectedListener(
new OnItemSelectedListener() {
private boolean firstSelect = true;
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
if (!firstSelect) {
logger.info(parent.getItemAtPosition(pos) + "");
updateCurrentSensor((Car) parent.getItemAtPosition(pos));
} else {
firstSelect = false;
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
logger.info("no change detected");
}
});
sensorDlProgress = (ProgressBar) view.findViewById(R.id.sensor_dl_progress);
sensorRetryButton = (Button) view.findViewById(R.id.retrybutton);
sensorRetryButton.setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
getCarList();
}
});
getCarList();
view.findViewById(R.id.mygaragelayout).requestFocus();
view.findViewById(R.id.mygaragelayout).requestFocusFromTouch();
}
private void setupCarCreationItems(View view) {
modelEditText = (EditText) view.findViewById(R.id.addCarToGarage_car_model);
manufacturerEditText = (EditText) view.findViewById(R.id.addCarToGarage_car_manufacturer);
constructionYearEditText =
(EditText) view.findViewById(R.id.addCarToGarage_car_constructionYear);
engineDisplacementEditText =
(EditText) view.findViewById(R.id.addCarToGarage_car_engineDisplacement);
TextWatcher textWatcher =
new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
carModel = modelEditText.getText().toString();
carManufacturer = manufacturerEditText.getText().toString();
carConstructionYear = constructionYearEditText.getText().toString();
carEngineDisplacement = engineDisplacementEditText.getText().toString();
}
@Override
public void afterTextChanged(Editable s) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
};
modelEditText.addTextChangedListener(textWatcher);
manufacturerEditText.addTextChangedListener(textWatcher);
constructionYearEditText.addTextChangedListener(textWatcher);
engineDisplacementEditText.addTextChangedListener(textWatcher);
OnClickListener listener =
new OnClickListener() {
@Override
public void onClick(View v) {
carFuelType = resolveFuelTypeFromCheckbox(v.getId());
logger.info(carFuelType);
}
};
RadioGroup radioGroup = (RadioGroup) view.findViewById(R.id.radiogroup_fueltype);
carFuelType = resolveFuelTypeFromCheckbox(radioGroup.getCheckedRadioButtonId());
gasolineRadioButton = (RadioButton) view.findViewById(R.id.radio_gasoline);
gasolineRadioButton.setOnClickListener(listener);
dieselRadioButton = (RadioButton) view.findViewById(R.id.radio_diesel);
dieselRadioButton.setOnClickListener(listener);
view.findViewById(R.id.register_car_button)
.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View view) {
// if(UserManager.instance().isLoggedIn()){
registerSensorAtServer(
SENSOR_TYPE,
carManufacturer,
carModel,
carConstructionYear,
carFuelType,
carEngineDisplacement);
// }
// else {
// Toast.makeText(getDialog().getContext(),
// "Please log in", Toast.LENGTH_SHORT).show();
// }
}
});
}
/** Shows the progress UI and hides the register form. */
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
private void showProgress(final boolean show) {
// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
// for very easy animations. If available, use these APIs to fade-in
// the progress spinner.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
int shortAnimTime =
getContext().getResources().getInteger(android.R.integer.config_shortAnimTime);
garageProgress.setVisibility(View.VISIBLE);
garageProgress
.animate()
.setDuration(shortAnimTime)
.alpha(show ? 1 : 0)
.setListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
garageProgress.setVisibility(show ? View.VISIBLE : View.GONE);
}
});
garageForm.setVisibility(View.VISIBLE);
garageForm
.animate()
.setDuration(shortAnimTime)
.alpha(show ? 0 : 1)
.setListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
garageForm.setVisibility(show ? View.GONE : View.VISIBLE);
}
});
} else {
// The ViewPropertyAnimator APIs are not available, so simply show
// and hide the relevant UI components.
garageProgress.setVisibility(show ? View.VISIBLE : View.GONE);
garageForm.setVisibility(show ? View.GONE : View.VISIBLE);
}
}
/**
* Register a new sensor (car) at the server
*
* @param sensorType
* @param carManufacturer Car manufacturer
* @param carModel Car model
* @param carConstructionYear Construction year of the car
* @param carFuelType Fuel type of the car
*/
private void registerSensorAtServer(
final String sensorType,
final String carManufacturer,
final String carModel,
final String carConstructionYear,
final String carFuelType,
final String carEngineDisplacement) {
try {
checkEmpty(
sensorType,
carManufacturer,
carModel,
carConstructionYear,
carConstructionYear,
carFuelType,
carEngineDisplacement);
} catch (Exception e) {
// TODO i18n
Toast.makeText(getContext(), "Not all values were defined.", Toast.LENGTH_SHORT).show();
return;
}
String sensorString =
String.format(
Locale.ENGLISH,
"{ \"type\": \"%s\", \"properties\": {\"manufacturer\": \"%s\", \"model\": \"%s\", \"fuelType\": \"%s\", \"constructionYear\": %s, \"engineDisplacement\": %s } }",
sensorType,
carManufacturer,
carModel,
carFuelType,
carConstructionYear,
carEngineDisplacement);
User user = UserManager.instance().getUser();
String username = user.getUsername();
String token = user.getToken();
if (((SettingsActivity) getContext()).isConnectedToInternet()) {
RestClient.createSensor(
sensorString,
username,
token,
new AsyncHttpResponseHandler() {
@Override
public void onStart() {
super.onStart();
showProgress(true);
}
@Override
public void onFailure(Throwable error, String content) {
super.onFailure(error, content);
if (content != null && content.equals("can't resolve host")) {
Toast.makeText(
getContext(),
getContext().getString(R.string.error_host_not_found),
Toast.LENGTH_SHORT)
.show();
} else if (content != null && content.contains("Unauthorized")) {
logger.info(
"Tried to register new car while not logged in. Creating temporary car.");
Crouton.makeText(
(Activity) getContext(),
getContext().getResources().getString(R.string.creating_temp_car),
Style.INFO)
.show();
createTemporaryCar();
} else {
logger.warn(
"Received error response: " + content + "; " + error.getMessage(), error);
// TODO i18n
Toast.makeText(getContext(), "Server Error: " + content, Toast.LENGTH_SHORT).show();
}
showProgress(false);
}
@Override
public void onSuccess(int httpStatusCode, Header[] h, String response) {
super.onSuccess(httpStatusCode, h, response);
String location = "";
for (int i = 0; i < h.length; i++) {
if (h[i].getName().equals("Location")) {
location += h[i].getValue();
break;
}
}
logger.info(httpStatusCode + " " + location);
String sensorId =
location.substring(location.lastIndexOf("/") + 1, location.length());
// put the sensor id into shared preferences
int engineDisplacement = Integer.parseInt(carEngineDisplacement);
int year = Integer.parseInt(carConstructionYear);
car =
new Car(
Car.resolveFuelType(carFuelType),
carManufacturer,
carModel,
sensorId,
year,
engineDisplacement);
persistCar();
}
});
} else {
createTemporaryCar();
}
}
private void createTemporaryCar() {
String sensorId = Car.TEMPORARY_SENSOR_ID + UUID.randomUUID().toString().substring(0, 5);
createNewCar(sensorId);
}
private void createNewCar(String sensorId) {
int year = Integer.parseInt(carConstructionYear);
car =
new Car(
Car.resolveFuelType(carFuelType),
carManufacturer,
carModel,
sensorId,
year,
Integer.parseInt(carEngineDisplacement));
persistCar();
Toast.makeText(
getContext(), getContext().getString(R.string.creating_temp_car), Toast.LENGTH_SHORT)
.show();
}
private void checkEmpty(String... values) throws Exception {
for (String string : values) {
if (string == null || string.isEmpty()) {
throw new Exception("Empty value!");
}
}
}
/**
* Get the fuel type form the checkbox
*
* @param resid
* @return
*/
private String resolveFuelTypeFromCheckbox(int resid) {
switch (resid) {
case R.id.radio_diesel:
return FuelType.DIESEL.toString();
case R.id.radio_gasoline:
return FuelType.GASOLINE.toString();
}
return "none";
}
protected String downloadSensors() throws Exception {
HttpGet getRequest = new HttpGet(ECApplication.BASE_URL + "/sensors");
getRequest.addHeader("Accept-Encoding", "application/json");
try {
HttpResponse response = HTTPClient.execute(getRequest);
String content = HTTPClient.readResponse(response.getEntity());
JSONObject parentObject = new JSONObject(content);
JSONArray res = (JSONArray) parentObject.get("sensors");
addSensorsToList(res);
} catch (Exception e) {
logger.warn(e.getMessage(), e);
throw e;
}
return "";
}
private void addSensorsToList(JSONArray res) {
for (int i = 0; i < res.length(); i++) {
String typeString;
JSONObject properties;
String carId;
try {
typeString = ((JSONObject) res.get(i)).optString("type", "none");
properties = ((JSONObject) res.get(i)).getJSONObject("properties");
carId = properties.getString("id");
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
continue;
}
if (typeString.equals(SENSOR_TYPE)) {
try {
sensors.add(Car.fromJsonWithStrictEngineDisplacement(properties));
} catch (JSONException e) {
logger.warn(
String.format(
"Car '%s' not supported: %s", carId != null ? carId : "null", e.getMessage()));
}
}
}
SensorAdapter adapter = new SensorAdapter();
sensorSpinner.setAdapter(adapter);
int index = adapter.getInitialSelectedItem();
sensorSpinner.setSelection(index);
}
public void getCarList() {
sensorDlProgress.setVisibility(View.VISIBLE);
sensorSpinner.setVisibility(View.GONE);
sensorRetryButton.setVisibility(View.GONE);
sensors = new ArrayList<Car>();
if (((SettingsActivity) getContext()).isConnectedToInternet()) {
try {
new SensorDownloadTask().execute().get();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
Toast.makeText(getContext(), "Could not retrieve cars from server", Toast.LENGTH_SHORT)
.show();
}
// TODO add possibility to update cache
// downloadSensors(true);
} else {
getCarsFromCache();
}
if (sensors.isEmpty()) {
logger.warn("Got no cars neither from server nor from cache.");
// TODO show warning that no cars were found i18n
Toast.makeText(
getContext(),
"Could not retrieve cars from server or local cache",
Toast.LENGTH_SHORT)
.show();
}
sensorDlProgress.setVisibility(View.GONE);
sensorSpinner.setVisibility(View.VISIBLE);
}
private void getCarsFromCache() {
File directory;
try {
directory = Util.resolveExternalStorageBaseFolder();
File f = new File(directory, CarManager.CAR_CACHE_FILE_NAME);
if (f.isFile()) {
BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
String content = "";
String line = "";
while ((line = bufferedReader.readLine()) != null) {
content = content.concat(line);
}
bufferedReader.close();
JSONArray cars = new JSONArray(content);
addSensorsToList(cars);
}
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
}
/**
* This method updates the attributes of the current sensor (=car)
*
* @param sensorid the id that is stored on the server
* @param carManufacturer the car manufacturer
* @param carModel the car model
* @param fuelType the fuel type of the car
* @param year construction year of the car
*/
private void updateCurrentSensor(Car car) {
this.car = car;
}
@Override
protected void onDialogClosed(boolean positiveResult) {
if (positiveResult) {
// this fixes issue #166
persistCar();
}
}
private void persistCar() {
persistString(serializeCar(car));
setSummary(car.toString());
CarManager.instance().setCar(car);
}
@Override
protected void onSetInitialValue(boolean restorePersistedValue, Object defaultValue) {
if (restorePersistedValue) {
car = instantiateCar(this.getPersistedString(DEFAULT_VALUE));
}
if (car != null) {
setSummary(car.toString());
} else {
setSummary(R.string.please_select);
}
}
@Override
protected Parcelable onSaveInstanceState() {
final Parcelable superState = super.onSaveInstanceState();
// Check whether this Preference is persistent (continually saved)
if (isPersistent()) {
// No need to save instance state since it's persistent, use superclass state
return superState;
}
// Create instance of custom BaseSavedState
final SavedState myState = new SavedState(superState);
// Set the state's value with the class member that holds current setting value
myState.car = car;
return myState;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
// Check whether we saved the state in onSaveInstanceState
if (state == null || !state.getClass().equals(SavedState.class)) {
// Didn't save the state, so call superclass
super.onRestoreInstanceState(state);
return;
}
// Cast state to custom BaseSavedState and pass to superclass
SavedState myState = (SavedState) state;
super.onRestoreInstanceState(myState.getSuperState());
}
public static String serializeCar(Car car) {
ObjectOutputStream oos = null;
Base64OutputStream b64 = null;
try {
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
oos = new ObjectOutputStream(byteArrayOut);
oos.writeObject(car);
oos.flush();
ByteArrayOutputStream out = new ByteArrayOutputStream();
b64 = new Base64OutputStream(out, Base64.DEFAULT);
b64.write(byteArrayOut.toByteArray());
b64.flush();
b64.close();
out.flush();
out.close();
String result = new String(out.toByteArray());
return result;
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} finally {
if (oos != null)
try {
b64.close();
oos.close();
} catch (IOException e) {
logger.warn(e.getMessage(), e);
}
}
return null;
}
public static Car instantiateCar(String object) {
if (object == null) return null;
ObjectInputStream ois = null;
try {
Base64InputStream b64 =
new Base64InputStream(new ByteArrayInputStream(object.getBytes()), Base64.DEFAULT);
ois = new ObjectInputStream(b64);
Car car = (Car) ois.readObject();
return car;
} catch (StreamCorruptedException e) {
logger.warn(e.getMessage(), e);
} catch (IOException e) {
logger.warn(e.getMessage(), e);
} catch (ClassNotFoundException e) {
logger.warn(e.getMessage(), e);
} finally {
if (ois != null)
try {
ois.close();
} catch (IOException e) {
logger.warn(e.getMessage(), e);
}
}
return null;
}
private class SensorDownloadTask extends AsyncTask<Void, String, String> {
@Override
protected String doInBackground(Void... params) {
try {
return downloadSensors();
} catch (Exception e) {
logger.warn(e.getMessage(), e);
}
return "";
}
}
public static class SavedState extends BaseSavedState {
// Member that holds the setting's value
// Change this data type to match the type saved by your Preference
Car car;
public SavedState(Parcelable superState) {
super(superState);
}
public SavedState(Parcel source) {
super(source);
// Get the current preference's value
car = (Car) source.readSerializable(); // Change this to read the appropriate data type
}
@Override
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
// Write the preference's value
dest.writeSerializable(car); // Change this to write the appropriate data type
}
// Standard creator object using an instance of this class
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
private class SensorAdapter extends BaseAdapter implements SpinnerAdapter {
@Override
public int getCount() {
return sensors.size() + 1;
}
public int getInitialSelectedItem() {
if (car != null) {
int index = 1;
for (Car c : sensors) {
if (c.equals(car)) {
return index;
}
index++;
}
}
return 0;
}
@Override
public Object getItem(int position) {
return sensors.get(position - 1);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View view, ViewGroup parent) {
TextView text;
if (position == 0) {
text = new TextView(parent.getContext());
text.setText(getContext().getString(R.string.please_select));
} else {
text = new TextView(parent.getContext());
text.setText(((Car) getItem(position)).toString());
}
return text;
}
}
}
/**
* This is a track. A track is a collection of measurements. All measurements of a track are
* accessible via the track. The track stores meta information about the ride (car, fuel,
* description...)
*/
public class Track implements Comparable<Track> {
public enum TrackStatus {
ONGOING {
@Override
public String toString() {
return "ONGOING";
}
},
FINISHED {
@Override
public String toString() {
return "FINISHED";
}
}
}
private static final Logger logger = Logger.getLogger(Track.class);
private long id;
private String name;
private String description;
private List<Measurement> measurements = new ArrayList<Measurement>();
private Car car;
private AbstractConsumptionAlgorithm consumptionAlgorithm;
private String remoteID;
private Double consumptionPerHour;
private TrackStatus status = TrackStatus.ONGOING;
private DbAdapter dbAdapter;
private boolean lazyLoadingMeasurements;
private Long startTime = null;
private Long endTime = null;
private TrackMetadata metadata;
public static Track createTrackWithId(long id, DbAdapter dbAdapterImpl) {
Track track = new Track(id);
track.dbAdapter = dbAdapterImpl;
return track;
}
public static Track createNewLocalTrack(DbAdapter dbAdapterImpl) {
Track t = new Track(dbAdapterImpl);
return t;
}
public static Track createRemoteTrack(String remoteID, DbAdapter dbAdapter) {
Track track = new Track(remoteID, dbAdapter);
return track;
}
private Track(long id) {
this.id = id;
}
private Track(String remoteID, DbAdapter dbAdapter) {
this(dbAdapter);
this.remoteID = remoteID;
this.status = TrackStatus.FINISHED;
}
/**
* Constructor for creating "fresh" new track. Use this for new measurements that were captured
* from the OBD-II adapter.
*/
private Track(DbAdapter dbAdapter) {
this.name = "";
this.description = "";
this.measurements = new ArrayList<Measurement>();
this.id = dbAdapter.insertTrack(this);
this.dbAdapter = dbAdapter;
}
/** @return the localTrack */
public boolean isLocalTrack() {
return !isRemoteTrack();
}
public boolean isRemoteTrack() {
return (remoteID != null ? true : false);
}
/** @return the name */
public String getName() {
return name;
}
/** @param name the name to set */
public void setName(String name) {
this.name = name;
}
/** @return the description */
public String getDescription() {
return description;
}
/** @param description the description to set */
public void setDescription(String description) {
this.description = description;
}
/** @return the measurements */
public List<Measurement> getMeasurements() {
if ((measurements == null || measurements.isEmpty()) && dbAdapter != null) {
try {
this.measurements = dbAdapter.getAllMeasurementsForTrack(this);
} catch (TrackWithoutMeasurementsException e) {
logger.warn(e.getMessage(), e);
}
}
return measurements;
}
public Car getCar() {
return car;
}
public void setCar(Car car) {
this.car = car;
this.consumptionAlgorithm = new BasicConsumptionAlgorithm(car);
}
/**
* get the time where the track started
*
* @return start time of track as unix long
* @throws MeasurementsException
*/
public Long getStartTime() throws MeasurementsException {
if (startTime != null) return startTime;
if (this.getMeasurements().size() > 0) return this.getMeasurements().get(0).getTime();
else throw new MeasurementsException("No measurements in the track");
}
public void setStartTime(Long time) {
this.startTime = time;
}
/**
* get the time where the track ended
*
* @return end time of track as unix long
* @throws MeasurementsException
*/
public Long getEndTime() throws MeasurementsException {
if (endTime != null) return endTime;
if (this.getMeasurements().size() > 0)
return this.getMeasurements().get(this.getMeasurements().size() - 1).getTime();
else throw new MeasurementsException("No measurements in the track");
}
public void setEndTime(Long time) {
this.endTime = time;
}
/**
* Sets the measurements with an arraylist of measurements
*
* @param measurements the measurements of a track
*/
public void setMeasurementsAsArrayList(List<Measurement> measurements) {
setMeasurementsAsArrayList(measurements, false);
}
public void setMeasurementsAsArrayList(List<Measurement> measurements, boolean storeInDb) {
this.measurements = measurements;
if (storeInDb) {
storeMeasurementsInDbAdapter();
}
}
private void storeMeasurementsInDbAdapter() {
if (this.dbAdapter != null) {
for (Measurement measurement : measurements) {
try {
this.dbAdapter.insertMeasurement(measurement);
} catch (MeasurementsException e) {
logger.warn(e.getMessage(), e);
}
}
}
}
/**
* Use this method only to insert "fresh" measurements, not to recreate a Track from the database
* Use {@code insertMeasurement(ArrayList<Measurement> measurements)} instead Inserts measurments
* into the Track and into the database!
*
* @param measurement
* @throws TrackAlreadyFinishedException
* @throws MeasurementsException
*/
public void addMeasurement(Measurement measurement) throws TrackAlreadyFinishedException {
measurement.setTrack(Track.this);
this.measurements.add(measurement);
if (this.dbAdapter != null) {
try {
this.dbAdapter.insertNewMeasurement(measurement);
} catch (MeasurementsException e) {
logger.severe("This should never happen", e);
return;
}
} else {
logger.warn("DbAdapter was null! Could not insert measurement");
}
}
/**
* Returns the number of measurements of this track
*
* @return
*/
public int getNumberOfMeasurements() {
return this.measurements.size();
}
/** @return the id */
public long getId() {
return id;
}
public String getRemoteID() {
return remoteID;
}
public void setRemoteID(String remoteID) {
this.remoteID = remoteID;
}
/**
* Returns the length of a track in kilometers
*
* @return
*/
public double getLengthOfTrack() {
List<Measurement> measurements = this.getMeasurements();
double distance = 0.0;
if (measurements.size() > 1) {
for (int i = 0; i < measurements.size() - 1; i++) {
distance =
distance
+ Util.getDistance(
measurements.get(i).getLatitude(),
measurements.get(i).getLongitude(),
measurements.get(i + 1).getLatitude(),
measurements.get(i + 1).getLongitude());
}
}
return distance;
}
/**
* Returns the last measurement of this track
*
* @return the last measurement or null if there are no measurements
*/
public Measurement getLastMeasurement() {
if (this.measurements.size() > 0) {
return this.measurements.get(this.measurements.size() - 1);
}
return null;
}
/**
* Returns the first measurement of this track
*
* @return Returns the last measurement or null if there are no measurements
*/
public Measurement getFirstMeasurement() {
if (this.measurements.size() > 0) {
return this.measurements.get(0);
}
return null;
}
/**
* Returns the average co2 emission for the track.
*
* @return
*/
public double getCO2Average() {
double co2Average = 0.0;
try {
for (Measurement measurement : measurements) {
if (measurement.getProperty(CONSUMPTION) != null) {
co2Average =
co2Average
+ consumptionAlgorithm.calculateCO2FromConsumption(
measurement.getProperty(CONSUMPTION));
}
}
co2Average = co2Average / measurements.size();
} catch (FuelConsumptionException e) {
logger.warn(e.getMessage(), e);
}
return co2Average;
}
public double getFuelConsumptionPerHour() throws UnsupportedFuelTypeException {
if (consumptionPerHour == null) {
consumptionPerHour = 0.0;
int consideredCount = 0;
for (int i = 0; i < measurements.size(); i++) {
try {
consumptionPerHour =
consumptionPerHour + consumptionAlgorithm.calculateConsumption(measurements.get(i));
consideredCount++;
} catch (FuelConsumptionException e) {
logger.warn(e.getMessage());
}
}
consumptionPerHour = consumptionPerHour / consideredCount;
}
return consumptionPerHour;
}
@Override
public int compareTo(Track t) {
try {
if (t.getStartTime() == null && t.getEndTime() == null) {
/*
* we cannot assume any ordering
*/
return 0;
}
} catch (MeasurementsException e) {
return 0;
}
try {
if (this.getStartTime() == null) {
/*
* no measurements, this is probably a relatively new track
*/
return -1;
}
} catch (MeasurementsException e) {
return -1;
}
try {
if (t.getStartTime() == null) {
/*
* no measurements, that is probably a relatively new track
*/
return 1;
}
} catch (MeasurementsException e) {
return 1;
}
try {
return (this.getStartTime() < t.getStartTime() ? 1 : -1);
} catch (MeasurementsException e) {
return 0;
}
}
public double getLiterPerHundredKm() throws MeasurementsException {
return consumptionPerHour * getDurationInMillis() / (1000 * 60 * 60) / getLengthOfTrack() * 100;
}
public long getDurationInMillis() throws MeasurementsException {
return getEndTime() - getStartTime();
}
public double getGramsPerKm() throws FuelConsumptionException, MeasurementsException {
if (this.car.getFuelType().equals(FuelType.GASOLINE)) {
return getLiterPerHundredKm() * 23.3;
} else if (this.car.getFuelType().equals(FuelType.DIESEL)) {
return getLiterPerHundredKm() * 26.4;
} else throw new FuelConsumptionException();
}
public void setStatus(TrackStatus s) {
this.status = s;
}
public TrackStatus getStatus() {
return status;
}
public void setLazyLoadingMeasurements(boolean b) {
this.lazyLoadingMeasurements = b;
}
public boolean isLazyLoadingMeasurements() {
return lazyLoadingMeasurements;
}
/**
* Creates a Track and adds its contents to the DB layer (adapter).
*
* @param json the input json object
* @param adapter the DB layer adapter
* @return the Track object
* @throws JSONException parsing fails or contains unexpected properties
* @throws ParseException if DateTime parsing fails
*/
public static Track fromJson(JSONObject json, DbAdapter adapter)
throws JSONException, ParseException {
JSONObject trackProperties = json.getJSONObject("properties");
Track t = Track.createRemoteTrack(trackProperties.getString("id"), adapter);
String trackName = "unnamed Track #" + t.getId();
try {
trackName = trackProperties.getString("name");
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
t.setName(trackName);
String description = "";
try {
description = trackProperties.getString("description");
} catch (JSONException e) {
logger.warn(e.getMessage(), e);
}
t.setDescription(description);
JSONObject sensorProperties =
trackProperties.getJSONObject("sensor").getJSONObject("properties");
t.setCar(Car.fromJson(sensorProperties));
// include server properties tracks created, modified?
t.dbAdapter.updateTrack(t);
// Log.i("track_id",t.getId()+" "+((DbAdapterRemote)
// dbAdapter).trackExistsInDatabase(t.getId())+" "+dbAdapter.getNumberOfStoredTracks());
Measurement recycleMeasurement;
List<Measurement> measurements = new ArrayList<Measurement>();
JSONArray features = json.getJSONArray("features");
logger.info(
"Parsing measurements of track " + t.getRemoteID() + ". Count: " + features.length());
for (int j = 0; j < features.length(); j++) {
JSONObject measurementJsonObject = features.getJSONObject(j);
recycleMeasurement = Measurement.fromJson(measurementJsonObject);
recycleMeasurement.setTrack(t);
measurements.add(recycleMeasurement);
}
t.setMeasurementsAsArrayList(measurements);
logger.info("Storing measurements in database");
t.storeMeasurementsInDbAdapter();
return t;
}
public boolean isFinished() {
return status != null && status == TrackStatus.FINISHED;
}
/**
* updates the tracks metadata. if there is already metadata, the properties are merged. the
* provided object overrides existing keys.
*
* @param newMetadata
*/
public void updateMetadata(TrackMetadata newMetadata) {
if (this.metadata != null) {
this.metadata.merge(newMetadata);
} else {
setMetadata(newMetadata);
}
dbAdapter.updateTrack(this);
}
public TrackMetadata getMetadata() {
return this.metadata;
}
public void setMetadata(TrackMetadata m) {
this.metadata = m;
}
@Override
public String toString() {
return "Track / id: " + getId() + " / Name: " + getName();
}
}
