Package com.vaadin.flow.router

Class ErrorParameter<T extends Exception>

java.lang.Object

com.vaadin.flow.router.ErrorParameter<T>

Type Parameters:

T - the type of the error parameter

All Implemented Interfaces:

Serializable

public class ErrorParameter<T extends Exception>
extends Object
implements Serializable

Navigation error parameter class containing thrown exception and possibly a custom message.

Since:

1.0.

Author:

Vaadin Ltd

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ErrorParameter(Class<T> parameterType, Exception caughtException)	Create ErrorParameter for exception.
ErrorParameter(Class<T> parameterType, Exception caughtException, String customMessage)	Create ErrorParameter for exception with a custom message.

Method Summary

Modifier and Type	Method	Description
Exception	getCaughtException()	Gets the originally caught exception.
String	getCustomMessage()	Get the set custom message.
T	getException()	Get the error parameter exception.
boolean	hasCustomMessage()	Check if we have a custom message for the exception.

Methods inherited from class java.lang.Object

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

Constructor Details

ErrorParameter

public ErrorParameter(Class<T> parameterType,
 Exception caughtException)

Create ErrorParameter for exception.

Parameters:

parameterType - the exception type of this error parameter

caughtException - the caught exception

ErrorParameter

public ErrorParameter(Class<T> parameterType,
 Exception caughtException,
 String customMessage)

Create ErrorParameter for exception with a custom message.

Parameters:

parameterType - the exception type of this error parameter

caughtException - the caught exception

customMessage - custom message to go with exception

Method Details

getException

public T getException()

Get the error parameter exception. This will be the same as getCaughtException() if that exception is of the type of this error parameter. Otherwise, it will be the first Throwable.getCause() which is of the right type.

Returns:

exception

See Also:

• getCaughtException()

getCaughtException

public Exception getCaughtException()

Gets the originally caught exception. This exception might not match the type of this error parameter if it has been created based on an exception that is the cause of the caught exception.

Returns:

the caught exception

See Also:

• getException()

hasCustomMessage

public boolean hasCustomMessage()

Check if we have a custom message for the exception.

Returns:

true if a custom message is set

getCustomMessage

public String getCustomMessage()

Get the set custom message.

Returns:

custom message or empty if not defined