ExternalSensorParser.java

package pl.llp.aircasting.sensor.external;

import pl.llp.aircasting.model.events.SensorEvent;

public class ExternalSensorParser
{
  /**
   * This has to match what Arduino produces
   * Value;Sensor package name;Sensor name;Type of measurement;Short type of measurement;Unit name;Unit symbol/abbreviation;T1;T2;T3;T4;T5
   */
  enum Fields
  {
    MEASUREMENT_VALUE,

    SENSOR_PACKAGE_NAME,
    SENSOR_NAME,

    MEASUREMENT_TYPE,
    MEASUREMENT_SHORT_TYPE,
    MEASUREMENT_UNIT,
    MEASUREMENT_SYMBOL,

    THRESHOLD_VERY_LOW,
    THRESHOLD_LOW,
    THRESHOLD_MEDIUM,
    THRESHOLD_HIGH,
    THRESHOLD_VERY_HIGH
  }

  public SensorEvent parse(String string) throws ParseException
  {
    String[] parts = string.split(";");
    if (parts.length < Fields.values().length)
    {
      throw new ParseException("Field count is wrong");
    }

    String packageName = parts[Fields.SENSOR_PACKAGE_NAME.ordinal()];
    String name = parts[Fields.SENSOR_NAME.ordinal()];
    String type = parts[Fields.MEASUREMENT_TYPE.ordinal()];
    String shortType = parts[Fields.MEASUREMENT_SHORT_TYPE.ordinal()];
    String unit = parts[Fields.MEASUREMENT_UNIT.ordinal()];
    String symbol = parts[Fields.MEASUREMENT_SYMBOL.ordinal()];

    double value;
    int veryLow, low, mid, high, veryHigh;
    try
    {
      veryLow = Integer.parseInt(parts[Fields.THRESHOLD_VERY_LOW.ordinal()]);
      low = Integer.parseInt(parts[Fields.THRESHOLD_LOW.ordinal()]);
      mid = Integer.parseInt(parts[Fields.THRESHOLD_MEDIUM.ordinal()]);
      high = Integer.parseInt(parts[Fields.THRESHOLD_HIGH.ordinal()]);
      veryHigh = Integer.parseInt(parts[Fields.THRESHOLD_VERY_HIGH.ordinal()]);

      value = Double.parseDouble(parts[Fields.MEASUREMENT_VALUE.ordinal()]);
    }
    catch (NumberFormatException e)
    {
      throw new ParseException(e);
    }

    return new SensorEvent(packageName, name, type, shortType, unit, symbol, veryLow, low, mid, high, veryHigh, value);
  }
}