its.backbone.domain
Class SensorData

java.lang.Object
  its.backbone.domain.SensorData

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

TmsData

public abstract class SensorData

extends java.lang.Object

implements java.io.Serializable

Base class for data types

See Also:

Serialized Form

Field Summary

protected DataBlock	dataBlock datablock
protected static int	MASK_EIGHT_BIT
protected static int	MASK_FIVE_BIT
protected static int	MASK_FOUR_BIT
protected static int	MASK_ONE_BIT Bitmasks used in extracting data
protected static int	MASK_SEVEN_BIT
protected static int	MASK_SIX_BIT
protected static int	MASK_THREE_BIT
protected static int	MASK_TWO_BIT
protected byte[]	rawData data

Constructor Summary

SensorData(DataBlock dataBlock, int packedsize)
constructor

Method Summary

protected abstract void	checkOffsetBounds(int offset) checks offset against the header size and the data block size, called by read.
int	getPackedSize()
abstract boolean	isValid()
abstract java.lang.String[]	processSensor(int offset, java.lang.String sensor_id) processes an instance of a sensor
protected abstract void	read(int offset) Method to read object from raw TMS data block.
protected byte[]	setRawData(int offset) initializes rawData: allocates and copies from data block

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

rawData

protected byte[] rawData

data

dataBlock

protected DataBlock dataBlock

datablock

MASK_ONE_BIT

protected static final int MASK_ONE_BIT

Bitmasks used in extracting data

See Also:

Constant Field Values

MASK_TWO_BIT

protected static final int MASK_TWO_BIT

See Also:

Constant Field Values

MASK_THREE_BIT

protected static final int MASK_THREE_BIT

See Also:

Constant Field Values

MASK_FOUR_BIT

protected static final int MASK_FOUR_BIT

See Also:

Constant Field Values

MASK_FIVE_BIT

protected static final int MASK_FIVE_BIT

See Also:

Constant Field Values

MASK_SIX_BIT

protected static final int MASK_SIX_BIT

See Also:

Constant Field Values

MASK_SEVEN_BIT

protected static final int MASK_SEVEN_BIT

See Also:

Constant Field Values

MASK_EIGHT_BIT

protected static final int MASK_EIGHT_BIT

See Also:

Constant Field Values

Constructor Detail

SensorData

public SensorData(DataBlock dataBlock,
                  int packedsize)
           throws java.lang.IllegalArgumentException

constructor

Method Detail

getPackedSize

public int getPackedSize()

processSensor

public abstract java.lang.String[] processSensor(int offset,
                                                 java.lang.String sensor_id)
                                          throws java.lang.IllegalArgumentException,
                                                 BadOffsetException

processes an instance of a sensor

Returns:

an array with the corresponding sensor values

Throws:

java.lang.IllegalArgumentException

BadOffsetException

isValid

public abstract boolean isValid()

read

protected abstract void read(int offset)
                      throws BadOffsetException

Method to read object from raw TMS data block. The number of bytes to read is inherent in the sensor type (loop or station are 3 bytes, speed trap is 6 bytes).

Parameters:

offset - the offset at which to start reading

Throws:

BadOffsetException - if the offset < TmsData.HEADER_LENGTH or >= the length of the data block

checkOffsetBounds

protected abstract void checkOffsetBounds(int offset)
                                   throws BadOffsetException

checks offset against the header size and the data block size, called by read.

Throws:

BadOffsetException - if offset < HEADER_SIZE or offset >= (data block size - size of sensor).

setRawData

protected byte[] setRawData(int offset)

initializes rawData: allocates and copies from data block