private static String generateCSVFileContent(List<VirtualSensor> listOfSensors) {
StringBuilder file = new StringBuilder("");
for (VirtualSensor sensor : listOfSensors) {
// header
Iterator<Map.Entry<String, String>> metadataIterator =
sensor.getMetadata().entrySet().iterator();
while (metadataIterator.hasNext()) {
Map.Entry<String, String> elem = metadataIterator.next();
file.append("# " + elem.getKey() + ":" + elem.getValue() + "\n");
}
// fields, units, types
StringBuilder field_names = new StringBuilder("# " + RequestHandler.getConst("FIELDS") + ":");
StringBuilder field_units = new StringBuilder("# " + RequestHandler.getConst("UNITS") + ":");
StringBuilder field_types = new StringBuilder("# " + RequestHandler.getConst("TYPES") + ":");
for (DataField field : sensor.getFields()) {
String unit = field.getUnit();
if (unit == null || unit.trim().length() == 0) unit = "";
if (field != sensor.getFields().get(sensor.getFields().size() - 1)) {
field_names.append(field.getName().toLowerCase() + ",");
field_units.append(unit + ",");
field_types.append(field.getType().toLowerCase() + ",");
} else {
field_names.append(field.getName().toLowerCase() + "\n");
field_units.append(unit + "\n");
field_types.append(field.getType().toLowerCase() + "\n");
}
}
file.append(field_names.toString() + field_units.toString() + field_types.toString());
// values
List<Vector<Double>> values = sensor.getValues();
Vector<Long> timestamps = sensor.getTimestamps();
for (int i = 0; i < timestamps.size(); i++) {
file.append(
(new java.text.SimpleDateFormat(RequestHandler.getConst("ISO_FORMAT"))
.format(new java.util.Date(timestamps.get(i))))
.toString()
.replace('T', ' ')
+ ","
+ timestamps.get(i));
boolean first = true;
for (Object value : values.get(i)) {
if (first) {
first = false;
} else {
file.append(",");
}
file.append("," + value);
}
file.append("\n");
}
// latest values
List<Double> latestValues = sensor.getLatestValues();
if (latestValues.size() > 0) {
for (Object value : latestValues) {
file.append("," + value);
}
file.append("\n");
}
}
return file.toString();
}
private static String generateGeoJSONFileContent(List<VirtualSensor> listOfSensors) {
JSONObject featureCollection = new JSONObject();
featureCollection.put(
RequestHandler.getConst("TYPE_GEOJSON"), RequestHandler.getConst("FEATURE_COLLECTION"));
JSONArray features = new JSONArray();
for (VirtualSensor sensor : listOfSensors) {
JSONObject feature = new JSONObject();
feature.put(RequestHandler.getConst("TYPE_GEOJSON"), RequestHandler.getConst("FEATURE"));
JSONObject geometry = new JSONObject();
geometry.put(RequestHandler.getConst("TYPE_GEOJSON"), RequestHandler.getConst("POINT"));
JSONArray coordinates = new JSONArray();
JSONObject properties = new JSONObject();
double longitude = 0;
double latitude = 0;
double altitude = -1;
Iterator<Map.Entry<String, String>> metadataIterator =
sensor.getMetadata().entrySet().iterator();
while (metadataIterator.hasNext()) {
Map.Entry<String, String> elem = metadataIterator.next();
if (RequestHandler.getConst("LONGITUDE").equalsIgnoreCase(elem.getKey()))
longitude = Double.parseDouble(elem.getValue());
else if (RequestHandler.getConst("LATITUDE").equalsIgnoreCase(elem.getKey()))
latitude = Double.parseDouble(elem.getValue());
else if (RequestHandler.getConst("ALTITUDE").equalsIgnoreCase(elem.getKey()))
altitude = Double.parseDouble(elem.getValue());
else properties.put(elem.getKey(), elem.getValue());
}
coordinates.add(longitude);
coordinates.add(latitude);
if (altitude != -1) coordinates.add(altitude);
// fields, units, types
JSONArray setOfFields = new JSONArray();
for (DataField field : sensor.getFields()) {
String unit = field.getUnit();
if (unit == null || unit.trim().length() == 0) unit = "";
JSONObject fieldInfo = new JSONObject();
fieldInfo.put(RequestHandler.getConst("NAME"), field.getName().toLowerCase());
fieldInfo.put(RequestHandler.getConst("UNIT"), unit);
fieldInfo.put(RequestHandler.getConst("TYPE"), field.getType().toLowerCase());
setOfFields.add(fieldInfo);
}
properties.put(RequestHandler.getConst("FIELDS"), setOfFields);
// values
Vector<Long> timestamps = sensor.getTimestamps();
if (timestamps.size() > 0) {
JSONArray setOfValues = new JSONArray();
List<Vector<Double>> values = sensor.getValues();
for (int i = 0; i < timestamps.size(); i++) {
JSONArray valuesForOneField = new JSONArray();
valuesForOneField.add(
(new java.text.SimpleDateFormat(RequestHandler.getConst("ISO_FORMAT"))
.format(new java.util.Date(timestamps.get(i))))
.toString()
.replace('T', ' '));
valuesForOneField.add(timestamps.get(i));
for (Object value : values.get(i)) {
valuesForOneField.add(value);
}
setOfValues.add(valuesForOneField);
}
properties.put(RequestHandler.getConst("VALUES"), setOfValues);
}
geometry.put(RequestHandler.getConst("COORDINATES"), coordinates);
feature.put(RequestHandler.getConst("GEOMETRY"), geometry);
feature.put(RequestHandler.getConst("PROPERTIES"), properties);
features.add(feature);
// latest values
List<Double> latestValues = sensor.getLatestValues();
if (latestValues.size() > 0) {
JSONArray setOfValues = new JSONArray();
JSONArray valueForOneField = new JSONArray();
for (Object value : latestValues) {
valueForOneField.add(value);
}
setOfValues.add(valueForOneField);
properties.put(RequestHandler.getConst("VALUES"), setOfValues);
}
}
featureCollection.put(RequestHandler.getConst("FEATURES"), features);
return featureCollection.toJSONString();
}
private static String generateJSONFileContent(List<VirtualSensor> listOfSensors) {
JSONArray sensorsInfo = new JSONArray();
for (VirtualSensor sensor : listOfSensors) {
JSONObject sensorInfo = new JSONObject();
// header
Iterator<Map.Entry<String, String>> metadataIterator =
sensor.getMetadata().entrySet().iterator();
while (metadataIterator.hasNext()) {
Map.Entry<String, String> elem = metadataIterator.next();
sensorInfo.put(elem.getKey(), elem.getValue());
}
// fields, units, types
JSONArray setOfFields = new JSONArray();
for (DataField field : sensor.getFields()) {
String unit = field.getUnit();
if (unit == null || unit.trim().length() == 0) unit = "";
JSONObject fieldInfo = new JSONObject();
fieldInfo.put(RequestHandler.getConst("NAME"), field.getName().toLowerCase());
fieldInfo.put(RequestHandler.getConst("UNIT"), unit);
fieldInfo.put(RequestHandler.getConst("TYPE"), field.getType().toLowerCase());
setOfFields.add(fieldInfo);
}
sensorInfo.put(RequestHandler.getConst("FIELDS"), setOfFields);
// values
Vector<Long> timestamps = sensor.getTimestamps();
if (timestamps.size() > 0) {
JSONArray setOfValues = new JSONArray();
List<Vector<Double>> values = sensor.getValues();
for (int i = 0; i < timestamps.size(); i++) {
JSONArray valuesForOneField = new JSONArray();
valuesForOneField.add(
(new java.text.SimpleDateFormat(RequestHandler.getConst("ISO_FORMAT"))
.format(new java.util.Date(timestamps.get(i))))
.toString()
.replace('T', ' '));
valuesForOneField.add(timestamps.get(i));
for (Object value : values.get(i)) {
valuesForOneField.add(value);
}
setOfValues.add(valuesForOneField);
}
sensorInfo.put(RequestHandler.getConst("VALUES"), setOfValues);
}
// latest values
List<Double> latestValues = sensor.getLatestValues();
if (latestValues.size() > 0) {
JSONArray setOfValues = new JSONArray();
JSONArray valueForOneField = new JSONArray();
for (Object value : latestValues) {
valueForOneField.add(value);
}
setOfValues.add(valueForOneField);
sensorInfo.put(RequestHandler.getConst("VALUES"), setOfValues);
}
sensorsInfo.add(sensorInfo);
}
return sensorsInfo.toJSONString();
}