All Known Implementing Classes:

AbstractBinding, AbstractPollingBinding, BrokenBinding, ExpressionBinding, ExpressionStructureBinding, HttpBinding, PropertyBinding, QueryBinding
```
public interface Binding
```
A binding is associated with a target property and shares the lifecycle of the component (or shorter, in the designer-scope sessions). When created, a binding is given a consumer callback BindingFactory.create(BindingContext, BindingConfig) which it should call anytime it generates a value. The callback may be invoked on or off-queue.

Field Summary

Fields
Modifier and Type	Field	Description
`static QualifiedValue`	`BAD_CONFIG`
`static QualifiedValue`	`BAD_REF`
`static java.lang.String`	`BIDIRECTIONAL_KEY`	Shared config key for storing bidirectional property
`static QualifiedValue`	`INITIAL_VALUE`
`static java.lang.String`	`MDC_BINDING_TARGET`
`static QualifiedValue`	`NOT_FOUND`

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default boolean`	`isBidirectional()`
`default void`	`onTargetUpdated(PropertyTreeChangeEvent propertyChangeEvent)`	This will be called when the target property changes from a source other than the binding, if the binding returns true from `isBidirectional()` and there are no transforms present.
`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.

- Field Detail
  - BIDIRECTIONAL_KEY
```
static final java.lang.String BIDIRECTIONAL_KEY
```
    Shared config key for storing bidirectional property
    
    See Also:
    
    Constant Field Values
  - MDC_BINDING_TARGET
```
static final java.lang.String MDC_BINDING_TARGET
```
    See Also:
    
    Constant Field Values
  - NOT_FOUND
```
static final QualifiedValue NOT_FOUND
```
  - BAD_REF
```
static final QualifiedValue BAD_REF
```
  - BAD_CONFIG
```
static final QualifiedValue BAD_CONFIG
```
  - INITIAL_VALUE
```
static final QualifiedValue INITIAL_VALUE
```
- Method Detail
  - startup
```
void startup()
```
    Start up the binding. Will be called on-queue
  - shutdown
```
void shutdown()
```
    Shut down the binding. Will be called on-queue
  - isBidirectional
```
default boolean isBidirectional()
```
    Returns:
    
    true if this binding wants to be bidirectional. Note that if any transforms are present, then the binding will not operate in a bidirectional way.
  - onTargetUpdated
```
default void onTargetUpdated(PropertyTreeChangeEvent propertyChangeEvent)
```
    This will be called when the target property changes from a source other than the binding, if the binding returns true from isBidirectional() and there are no transforms present.
  - onUserRefresh
```
void onUserRefresh()
```
    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.

Interface Binding

Field Summary

Method Summary

Field Detail

BIDIRECTIONAL_KEY

MDC_BINDING_TARGET

NOT_FOUND

BAD_REF

BAD_CONFIG

INITIAL_VALUE

Method Detail

startup

shutdown

isBidirectional

onTargetUpdated

onUserRefresh