com.haulmont.cuba.web.exception

Class AbstractExceptionHandler

java.lang.Object

com.haulmont.cuba.web.exception.AbstractExceptionHandler

All Implemented Interfaces:

ExceptionHandler

Direct Known Subclasses:

InvalidValueExceptionHandler, NoUserSessionHandler

public abstract class AbstractExceptionHandler
extends java.lang.Object
implements ExceptionHandler

Base class for exception handlers determining their ability to handle an exception by its class name and optional implementation of canHandle(String, String, Throwable) method.

If you need to handle a specific exception, create a descendant of this class, pass handling exception class names into constructor, implement doHandle(com.haulmont.cuba.web.App, String, String, Throwable) method and register the new handler in the definition of ExceptionHandlersConfiguration bean in the client's spring.xml.

Method Summary

Modifier and Type	Method and Description
boolean	handle(com.vaadin.server.ErrorEvent event, App app) Handle an exception.

Methods inherited from class java.lang.Object

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

Method Detail

handle

public boolean handle(com.vaadin.server.ErrorEvent event,
                      App app)

Description copied from interface: ExceptionHandler

Handle an exception. Implementation class should either handle the exception and return true, or return false to delegate execution to the next handler in the chain of responsibility.

Specified by:

handle in interface ExceptionHandler

Parameters:

event - error event containing the exception, generated by Vaadin

app - current App instance

Returns:

true if the exception has been successfully handled, false if not