Package gda.device.epicsdevice

Class EpicsDouble

java.lang.Object

gda.factory.ConfigurableBase

gda.factory.FindableConfigurableBase

gda.device.DeviceBase

gda.device.scannable.ScannableBase

gda.device.epicsdevice.EpicsDouble

All Implemented Interfaces:

Device, Scannable, InitializationListener, Configurable, Findable, gda.observable.IObservable

@ServiceInterface(Scannable.class)
public class EpicsDouble
extends ScannableBase
implements InitializationListener

An object that provides read/write access to an EPICS DOUBLE.

Field Summary

Fields inherited from class gda.device.scannable.ScannableBase

__doc__, DEFAULT_INPUT_NAME, DEFAULT_OUTPUT_FORMAT, extraNames, inputNames, level, outputFormat

Fields inherited from class gda.device.DeviceBase

DEFAULT_PROTECTION_LEVEL_PROPERTY

Fields inherited from interface gda.device.Scannable

ATTR_NEXUS_CATEGORY, ATTR_NX_CLASS, VALUE_UNAVAILABLE

Constructor Summary

Constructors

Constructor	Description
EpicsDouble()	Creates a new EpicsDouble.

Method Summary

Modifier and Type	Method	Description
void	asynchronousMoveTo(Object position)	Trigger a move/operation and return immediately.
void	configure()	Default implementation for classes that do not have to do any specific configuration. Classes that do their own configuration should *not* call this superclass function, as it may cause the object to appear configured before it really is.
Object	getPosition()	Returns the current position of the Scannable.
void	initializationCompleted()	Called when all critical channels are connected.
boolean	isBusy()	Check if the Scannable is moving/operating.
void	setPvName(String pvName)	Sets the PV name that this object will connect to.

Methods inherited from class gda.device.scannable.ScannableBase

__call__, __call__, __doc__, __getitem__, __len__, __repr__, __str__, atCommandFailure, atLevelEnd, atLevelMoveStart, atLevelStart, atPointEnd, atPointStart, atScanEnd, atScanLineEnd, atScanLineStart, atScanStart, checkPositionValid, externalToInternal, getExtraNames, getInputNames, getLevel, getOutputFormat, getScanMetadataAttribute, getScanMetadataAttributeNames, getScanMetadataAttributes, internalToExternal, isAt, moveTo, rawAsynchronousMoveTo, rawGetPosition, setExtraNames, setInputNames, setLevel, setOutputFormat, setScanMetadataAttribute, setScanMetadataAttributes, stop, throwExceptionIfInvalidTarget, toFormattedString, toString, validateScannable, valueUnavailableString, waitWhileBusy, waitWhileBusy

Methods inherited from class gda.device.DeviceBase

addIObserver, close, deleteIObserver, deleteIObservers, getAttribute, getName, getProtectionLevel, isBeingObserved, isConfigureAtStartup, notifyIObservers, setAttribute, setConfigureAtStartup, setName, setProtectionLevel

Methods inherited from class gda.factory.ConfigurableBase

isConfigured, reconfigure, setConfigured

Methods inherited from class java.lang.Object

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

Methods inherited from interface gda.factory.Configurable

isConfigureAtStartup, isConfigured, reconfigure

Methods inherited from interface gda.device.Device

close, getAttribute, getProtectionLevel, setAttribute, setProtectionLevel

Methods inherited from interface gda.factory.Findable

getName, setName

Methods inherited from interface gda.observable.IObservable

addIObserver, deleteIObserver, deleteIObservers

Constructor Details

EpicsDouble

public EpicsDouble()

Creates a new EpicsDouble.

Method Details

setPvName

public void setPvName(String pvName)

Sets the PV name that this object will connect to.

Parameters:

pvName - the PV name

configure

public void configure()
               throws FactoryException

Description copied from class: ConfigurableBase

Default implementation for classes that do not have to do any specific configuration.
Classes that do their own configuration should *not* call this superclass function, as it may cause the object to appear configured before it really is.

Specified by:

configure in interface Configurable

Overrides:

configure in class ConfigurableBase

Throws:

FactoryException - if there is an error in configuration e.g. required variable not set or cannot connect to device

initializationCompleted

public void initializationCompleted()

Description copied from interface: InitializationListener

Called when all critical channels are connected.

Specified by:

initializationCompleted in interface InitializationListener

asynchronousMoveTo

public void asynchronousMoveTo(Object position)
                        throws DeviceException

Description copied from class: ScannableBase

Trigger a move/operation and return immediately. Implementations of this method should be non-blocking to allow concurrent motion; the isBusy method will be used to determine when the move has completed. Converts the external (user) position to an internal position and passes this to rawAsynchronousMoveTo.

Specified by:

asynchronousMoveTo in interface Scannable

Overrides:

asynchronousMoveTo in class ScannableBase

Parameters:

position - Position to move to should have an element for each input field.

Throws:

DeviceException

getPosition

public Object getPosition()
                   throws DeviceException

Description copied from class: ScannableBase

Returns the current position of the Scannable. Called by ConcurentScan at the end of the point. Reads an internal (hardware) position from rawGetPosition, converts this to an external (user) position and returns it.

Specified by:

getPosition in interface Scannable

Overrides:

getPosition in class ScannableBase

Returns:

Current position with an element for each input and extra field. null if their are no fields.

Throws:

DeviceException

isBusy

public boolean isBusy()
               throws DeviceException

Description copied from interface: Scannable

Check if the Scannable is moving/operating.

Specified by:

isBusy in interface Scannable

Returns:

true - if operation carried out by moveTo has not completed yet

Throws:

DeviceException