org.tango.server.dynamic.attribute

Class ProxyAttribute

java.lang.Object

org.tango.server.dynamic.attribute.ProxyAttribute

All Implemented Interfaces:

IAttributeBehavior, ISetValueUpdater

public final class ProxyAttribute
extends Object
implements IAttributeBehavior, ISetValueUpdater

Dynamic attribute that connects to another tango attribute. For performance issues, this attribute may be read from a MultiAttributeProxy

Author:

hardion

See Also:

MultiAttributeProxy

Constructor Summary

Constructors

Constructor and Description
ProxyAttribute(String attributeName, String attributeProxyName, boolean isReadyOnly)
ProxyAttribute(String attributeName, String attributeProxyName, boolean isReadyOnly, boolean autoUpdate) see ProxyAttribute(String, String, boolean)

Method Summary

Modifier and Type	Method and Description
AttributeConfiguration	getConfiguration()
AttributeValue	getSetValue()
StateMachineBehavior	getStateMachine()
AttributeValue	getValue() Read attribute
void	setReadValue(AttributeValue readValue) Update the read value
void	setValue(AttributeValue value) Write attribute

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyAttribute

public ProxyAttribute(String attributeName,
                      String attributeProxyName,
                      boolean isReadyOnly)
               throws fr.esrf.Tango.DevFailed

Parameters:

attributeName - The name of this attribute

attributeProxyName - The full name of the proxy attribute

isReadyOnly - Force this attribute to be read only even if proxy is read & write

Throws:

fr.esrf.Tango.DevFailed

ProxyAttribute

public ProxyAttribute(String attributeName,
                      String attributeProxyName,
                      boolean isReadyOnly,
                      boolean autoUpdate)
               throws fr.esrf.Tango.DevFailed

see ProxyAttribute(String, String, boolean)

Parameters:

autoUpdate - getValue will not read value from proxy. The value will be feeded with setReadValue(AttributeValue)

Throws:

fr.esrf.Tango.DevFailed

Method Detail

getValue

public AttributeValue getValue()
                        throws fr.esrf.Tango.DevFailed

Description copied from interface: IAttributeBehavior

Read attribute

Specified by:

getValue in interface IAttributeBehavior

Returns:

the read value

Throws:

fr.esrf.Tango.DevFailed

setValue

public void setValue(AttributeValue value)
              throws fr.esrf.Tango.DevFailed

Description copied from interface: IAttributeBehavior

Write attribute

Specified by:

setValue in interface IAttributeBehavior

Throws:

fr.esrf.Tango.DevFailed

getConfiguration

public AttributeConfiguration getConfiguration()

Specified by:

getConfiguration in interface IAttributeBehavior

Returns:

attribute configuration

getStateMachine

public StateMachineBehavior getStateMachine()

Specified by:

getStateMachine in interface IAttributeBehavior

Returns:

The state machine of this attribute

setReadValue

public void setReadValue(AttributeValue readValue)

Update the read value

Parameters:

readValue -

getSetValue

public AttributeValue getSetValue()
                           throws fr.esrf.Tango.DevFailed

Specified by:

getSetValue in interface ISetValueUpdater

Throws:

fr.esrf.Tango.DevFailed