BrokenBinding

java.lang.Object
- com.inductiveautomation.perspective.gateway.binding.BrokenBinding

All Implemented Interfaces:

Binding
```
public class BrokenBinding
extends java.lang.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

All Methods Instance Methods Concrete Methods
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

- Method Detail
  - 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