com.vaadin.flow.data.binder

Class DefaultBindingExceptionHandler

java.lang.Object

com.vaadin.flow.data.binder.DefaultBindingExceptionHandler

All Implemented Interfaces:

BindingExceptionHandler, Serializable

public class DefaultBindingExceptionHandler
extends Object
implements BindingExceptionHandler

Default implementation of BindingExceptionHandler.

The handler tries to identify the HasElement field using "label" and "id" property values and if they are not available it tries dump all the attributes and properties in dev mode. The exception is not produced if the element has no any attribute or property.

Since:

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
DefaultBindingExceptionHandler()

Method Summary

Modifier and Type	Method and Description
Optional<BindingException>	handleException(HasValue<?,?> field, Exception exception) Produces a BindingException instance based on original exception and field as a subject of the exception.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBindingExceptionHandler

public DefaultBindingExceptionHandler()

Method Detail

handleException

public Optional<BindingException> handleException(HasValue<?,?> field,
                                                  Exception exception)

Description copied from interface: BindingExceptionHandler

Produces a BindingException instance based on original exception and field as a subject of the exception.

If the method returns an empty optional then the original exception will be thrown in the place where it has been caught.

The produced exception will be thrown instead of the exception and may contain it as a cause and additional information based on the field.

Specified by:

handleException in interface BindingExceptionHandler

Parameters:

field - the subject of the exception

exception - an exception thrown within binding logic

Returns:

an optional BindingException, or an empty optional if no additional information should be provided for the thrown exception