com.cosylab.epics.caj.cas.util
Class FloatingDecimalProcessVariable

java.lang.Object
  gov.aps.jca.cas.ProcessVariable
      com.cosylab.epics.caj.cas.util.NumericProcessVariable
          com.cosylab.epics.caj.cas.util.FloatingDecimalProcessVariable

public abstract class FloatingDecimalProcessVariable
extends NumericProcessVariable

Abstract convenient floating decimal process variable implementation. This implementation specializes NumericProcessVariable - adds precision support. Implementation does not handle status, severity and alarms.

Field Summary

Fields inherited from class gov.aps.jca.cas.ProcessVariable

ackS, ackT, channelCount, eventCallback, interest, name

Constructor Summary

FloatingDecimalProcessVariable(String name, gov.aps.jca.cas.ProcessVariableEventCallback eventCallback)
Floating decimal PV constructor.

Method Summary

void	fillInDBR(gov.aps.jca.dbr.DBR value) Set data (units, limits, ...) and precision to DBR.
abstract short	getPrecision() Get precision (number of digits after decimal point).

Methods inherited from class com.cosylab.epics.caj.cas.util.NumericProcessVariable

getLowerAlarmLimit, getLowerCtrlLimit, getLowerDispLimit, getLowerWarningLimit, getUnits, getUpperAlarmLimit, getUpperCtrlLimit, getUpperDispLimit, getUpperWarningLimit, read, readValue, write, writeValue

Methods inherited from class gov.aps.jca.cas.ProcessVariable

createChannel, destroy, getAckS, getDimensionSize, getEnumLabels, getEventCallback, getMaxDimension, getName, getType, interestDelete, interestRegister, isAckT, printInfo, printInfo, registerChannel, setAckS, setAckT, setEventCallback, unregisterChannel

Methods inherited from class java.lang.Object

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

Constructor Detail

FloatingDecimalProcessVariable

public FloatingDecimalProcessVariable(String name,
                                      gov.aps.jca.cas.ProcessVariableEventCallback eventCallback)

Floating decimal PV constructor.

Parameters:

name - process variable name.

eventCallback - event callback, can be null.

Method Detail

getPrecision

public abstract short getPrecision()

Get precision (number of digits after decimal point). Use -1 value as undefined precision.

Returns:

precision.

fillInDBR

public void fillInDBR(gov.aps.jca.dbr.DBR value)

Set data (units, limits, ...) and precision to DBR.

Overrides:

fillInDBR in class NumericProcessVariable

Parameters:

value - DBR to fill-in.