com.vaadin.fusion.exception

Class EndpointException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

com.vaadin.fusion.exception.EndpointException

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

EndpointValidationException

public class EndpointException
extends RuntimeException

An exception that is intended to be thrown by any Vaadin endpoint method to propagate exception details to the client side. When an exception is thrown by an endpoint method, a particular response is constructed based on the data of the exception and sent to the client side. When a client library receives the response, it raises the corresponding exception using the response data. By default, if any Vaadin endpoint method throws an exception when being invoked by the client request, the exception details are concealed due to security reasons. When there's a need to pass some information about the failure on the client side, this exception or any of its subclasses can be used. Refer to the getSerializationData() method to see the information on the data being sent to the client. Refer to VaadinConnectException in the client library for more information about the client side of the implementation.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	ERROR_MESSAGE_FIELD A message field to be used in the exception's serialization data in getSerializationData().

Constructor Summary

Constructors

Constructor and Description
EndpointException(String message) Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.
EndpointException(String message, Object detail) Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.
EndpointException(String message, Throwable cause) Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.
EndpointException(String message, Throwable cause, Object detail) Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.
EndpointException(Throwable cause) Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.

Method Summary

Modifier and Type	Method and Description
Object	getDetail() Gets the detail of the exception, if provided by user, null otherwise.
Map<String,Object>	getSerializationData() Creates a map with the serialization data to be sent to the client when the exception thrown is processed by FusionController.

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

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

Field Detail

ERROR_MESSAGE_FIELD

public static final String ERROR_MESSAGE_FIELD

A message field to be used in the exception's serialization data in getSerializationData().

See Also:

Constant Field Values

Constructor Detail

EndpointException

public EndpointException(String message)

Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.

Parameters:

message - the message to put in the client side exception message when an exception is thrown

EndpointException

public EndpointException(Throwable cause)

Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method. Will reuse the original exception's message when thrown.

Parameters:

cause - the original exception that had caused the current one to be thrown

EndpointException

public EndpointException(String message,
                         Object detail)

Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.

Parameters:

message - the message to put in the client side exception message when an * exception is thrown

detail - a detail object that will be serialized into JSON and sent to the client, when the exception is thrown

EndpointException

public EndpointException(String message,
                         Throwable cause)

Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.

Parameters:

message - the message to put in the client side exception message when an * * exception is thrown

cause - the original exception that had caused the current one to be thrown.

EndpointException

public EndpointException(String message,
                         Throwable cause,
                         Object detail)

Creates an exception which information is propagated to the client since, if thrown from a Vaadin endpoint method.

Parameters:

message - the message to put in the client side exception message when an * * exception is thrown

cause - the original exception that had caused the current one to be thrown

detail - a detail object that will be serialized into JSON and sent to the client, when the exception is thrown

Method Detail

getDetail

public Object getDetail()

Gets the detail of the exception, if provided by user, null otherwise.

Returns:

the detail of the exception

getSerializationData

public Map<String,Object> getSerializationData()

Creates a map with the serialization data to be sent to the client when the exception thrown is processed by FusionController. The following data will be sent to the client:

• exception type: either the original exception type or EndpointException, if no original exception is given
• message: non-blank message either from the constructor or from the original exception. If both are blank, none provided.
• detail: detail object serialized to json, if provided in the corresponding constructor

Returns:

the data to be sent to the client