Package com.inductiveautomation.perspective.gateway.binding

Class BrokenBinding

java.lang.Object

com.inductiveautomation.perspective.gateway.binding.BrokenBinding

All Implemented Interfaces:

Binding

public class BrokenBinding
extends Object
implements Binding

Used as a stand-in when a binding factory fails to produce a valid binding instancee. Simply emits a null value with CONFIG_ERROR quality.

Field Summary

Fields inherited from interface com.inductiveautomation.perspective.gateway.api.Binding

BAD_CONFIG, BAD_REF, BIDIRECTIONAL_KEY, INITIAL_VALUE, MDC_BINDING_TARGET, NOT_FOUND

Method Summary

Modifier and Type	Method	Description
void	onUserRefresh()	Called to prompt the binding to produce a value as soon as possible.
void	shutdown()	Shut down the binding.
void	startup()	Start up the binding.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.inductiveautomation.perspective.gateway.api.Binding

isBidirectional, onTargetUpdated, resolveReferences

Method Details

startup

public void startup()

Description copied from interface: Binding

Start up the binding. Will be called on-queue

Specified by:

startup in interface Binding

shutdown

public void shutdown()

Description copied from interface: Binding

Shut down the binding. Will be called on-queue

Specified by:

shutdown in interface Binding

onUserRefresh

public void onUserRefresh()

Description copied from interface: Binding

Called to prompt the binding to produce a value as soon as possible. This _not_ the normal way that bindings work. Bindings are expected to produce a value un-prompted after startup, and then again whenever they feel is appropriate. This is there to allow the user to call component.refreshBinding(property) and prompt a non-polling binding to run.

Specified by:

onUserRefresh in interface Binding