its.backbone.domain.tms
Class TmsData

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

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

TmsLoop, TmsStation, TmsTrap

public abstract class TmsData

extends SensorData

Base class for TMS data types TmsLoop, TmsStation, TmsTrap. These all use packed binary data formats defined by the TMS. These classes only provide the ability to construct an instance from a data block and an offset, which is how data is obtained from the TMS. They do not construct an instance from a stream. Last change: NSF 31 Dec 97 10:07 am

See Also:

Serialized Form

Field Summary

static int	INCIDENT_CONTINUING value for incidentDetect meaning a previous incident is continuing
static int	INCIDENT_NONE value for incidentDetect meaning no incident
static int	INCIDENT_OCCURRED value for incidentDetect meaning an incident occurred
static int	INCIDENT_TENTATIVE value for incidentDetect meaning an incident may have occurred

Fields inherited from class its.backbone.domain.SensorData

dataBlock, MASK_EIGHT_BIT, MASK_FIVE_BIT, MASK_FOUR_BIT, MASK_ONE_BIT, MASK_SEVEN_BIT, MASK_SIX_BIT, MASK_THREE_BIT, MASK_TWO_BIT, rawData

Constructor Summary

TmsData(DataBlock dataBlock, int packedsize)
constructor

Method Summary

protected void	checkOffsetBounds(int offset) checks offset against the header size and the data block size, called by read.
abstract java.lang.String	getName()
abstract TmsTimestamp	getTimestamp()
abstract boolean	isValid()
protected abstract void	read(int offset) Method to read object from raw TMS data block.

Methods inherited from class its.backbone.domain.SensorData

getPackedSize, processSensor, setRawData

Methods inherited from class java.lang.Object

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

Field Detail

INCIDENT_NONE

public static final int INCIDENT_NONE

value for incidentDetect meaning no incident

See Also:

Constant Field Values

INCIDENT_TENTATIVE

public static final int INCIDENT_TENTATIVE

value for incidentDetect meaning an incident may have occurred

See Also:

Constant Field Values

INCIDENT_OCCURRED

public static final int INCIDENT_OCCURRED

value for incidentDetect meaning an incident occurred

See Also:

Constant Field Values

INCIDENT_CONTINUING

public static final int INCIDENT_CONTINUING

value for incidentDetect meaning a previous incident is continuing

See Also:

Constant Field Values

Constructor Detail

TmsData

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

constructor

Parameters:

dataBlock - the block of data

Throws:

java.lang.IllegalArgumentException

BadOffsetException - Last change: NSF 5 Dec 97 1:56 pm

Method Detail

getName

public abstract java.lang.String getName()

getTimestamp

public abstract TmsTimestamp getTimestamp()

isValid

public abstract boolean isValid()

Specified by:

isValid in class SensorData

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).

Specified by:

read in class SensorData

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 void checkOffsetBounds(int offset)
                          throws BadOffsetException

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

Specified by:

checkOffsetBounds in class SensorData

Throws:

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