java.lang.Object
- org.springframework.boot.context.properties.bind.AbstractBindHandler

All Implemented Interfaces:
BindHandler
Direct Known Subclasses:
IgnoreErrorsBindHandler, IgnoreTopLevelConverterNotFoundBindHandler, NoUnboundElementsBindHandler, ValidationBindHandler
```
public abstract class AbstractBindHandler
extends Object
implements BindHandler
```
Abstract base class for BindHandler implementations.
Since:
2.0.0

Field Summary
- Fields inherited from interface org.springframework.boot.context.properties.bind.BindHandler
  DEFAULT

Constructor Summary
Constructors
Constructor Description
AbstractBindHandler()
Create a new binding handler instance.
AbstractBindHandler(BindHandler parent)
Create a new binding handler instance with a specific parent.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`onFailure(ConfigurationPropertyName name, Bindable<?> target, BindContext context, Exception error)`	Called when binding fails for any reason (including failures from `BindHandler.onSuccess(org.springframework.boot.context.properties.source.ConfigurationPropertyName, org.springframework.boot.context.properties.bind.Bindable<?>, org.springframework.boot.context.properties.bind.BindContext, java.lang.Object)` calls).
`void`	`onFinish(ConfigurationPropertyName name, Bindable<?> target, BindContext context, Object result)`	Called when binding finishes, regardless of whether the property was bound or not.
`<T> Bindable<T>`	`onStart(ConfigurationPropertyName name, Bindable<T> target, BindContext context)`	Called when binding of an element starts but before any result has been determined.
`Object`	`onSuccess(ConfigurationPropertyName name, Bindable<?> target, BindContext context, Object result)`	Called when binding of an element ends with a successful result.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AbstractBindHandler
```
public AbstractBindHandler()
```
    Create a new binding handler instance.
  - AbstractBindHandler
```
public AbstractBindHandler(BindHandler parent)
```
    Create a new binding handler instance with a specific parent.
    Parameters:
    parent - the parent handler
- Method Detail
  - onStart
```
public <T> Bindable<T> onStart(ConfigurationPropertyName name,
                               Bindable<T> target,
                               BindContext context)
```
    Description copied from interface: BindHandler
    Called when binding of an element starts but before any result has been determined.
    Specified by:
    onStart in interface BindHandler
    Type Parameters:
    T - the bindable source type
    Parameters:
    name - the name of the element being bound
    target - the item being bound
    context - the bind context
    Returns:
    the actual item that should be used for binding (may be null)
  - onSuccess
```
public Object onSuccess(ConfigurationPropertyName name,
                        Bindable<?> target,
                        BindContext context,
                        Object result)
```
    Description copied from interface: BindHandler
    Called when binding of an element ends with a successful result. Implementations may change the ultimately returned result or perform addition validation.
    Specified by:
    onSuccess in interface BindHandler
    Parameters:
    name - the name of the element being bound
    target - the item being bound
    context - the bind context
    result - the bound result (never null)
    Returns:
    the actual result that should be used (may be null)
  - onFailure
```
public Object onFailure(ConfigurationPropertyName name,
                        Bindable<?> target,
                        BindContext context,
                        Exception error)
                 throws Exception
```
    Description copied from interface: BindHandler
    Called when binding fails for any reason (including failures from BindHandler.onSuccess(org.springframework.boot.context.properties.source.ConfigurationPropertyName, org.springframework.boot.context.properties.bind.Bindable<?>, org.springframework.boot.context.properties.bind.BindContext, java.lang.Object) calls). Implementations may choose to swallow exceptions and return an alternative result.
    Specified by:
    onFailure in interface BindHandler
    Parameters:
    name - the name of the element being bound
    target - the item being bound
    context - the bind context
    error - the cause of the error (if the exception stands it may be re-thrown)
    Returns:
    the actual result that should be used (may be null).
    Throws:
    Exception - if the binding isn't valid
  - onFinish
```
public void onFinish(ConfigurationPropertyName name,
                     Bindable<?> target,
                     BindContext context,
                     Object result)
              throws Exception
```
    Description copied from interface: BindHandler
    Called when binding finishes, regardless of whether the property was bound or not.
    Specified by:
    onFinish in interface BindHandler
    Parameters:
    name - the name of the element being bound
    target - the item being bound
    context - the bind context
    result - the bound result (may be null)
    Throws:
    Exception - if the binding isn't valid

Constructor	Description
`AbstractBindHandler()`	Create a new binding handler instance.
`AbstractBindHandler(BindHandler parent)`	Create a new binding handler instance with a specific parent.

Class AbstractBindHandler

Field Summary

Fields inherited from interface org.springframework.boot.context.properties.bind.BindHandler

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractBindHandler

AbstractBindHandler

Method Detail

onStart

onSuccess

onFailure

onFinish