org.jboss.aerogear.controller.router.decorators
Class ErrorHandler

java.lang.Object
  org.jboss.aerogear.controller.router.decorators.ErrorHandler

All Implemented Interfaces:

RouteProcessor

@Decorator
public class ErrorHandler
extends Object
implements RouteProcessor

ErrorHandler is a CDI Decorator that decorates a RouteProcessor.

By wrapping the call to RouteProcessor.process(RouteContext) with a try catch block, this class will handle any exception thrown and either forward to a the appropriate error route configured, or if no error route exists, forward to the default error view.

Field Summary

private RouteProcessor	delegate
private EndpointInvoker	endpointInvoker

Constructor Summary

ErrorHandler(RouteProcessor delegate, EndpointInvoker endpointInvoker)

Method Summary

private String	appendAnyMediaTypeToAcceptHeader(javax.servlet.http.HttpServletRequest request)
private RouteContext	errorContext(Throwable rootCause, RouteContext orgContext)
private Object[]	getMethodArguments(RouteContext routeContext, Throwable t)
private Object	invokeErrorMethod(RouteContext errorContext, Throwable rootCause)
InvocationResult	process(RouteContext routeContext) Handles the actual invocation of the target or the passed-in Route.
private javax.servlet.http.HttpServletRequest	wrapRequest(RouteContext routeContext)

Methods inherited from class java.lang.Object

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

Field Detail

delegate

private final RouteProcessor delegate

endpointInvoker

private EndpointInvoker endpointInvoker

Constructor Detail

ErrorHandler

@Inject
public ErrorHandler(@Delegate
                           RouteProcessor delegate,
                           EndpointInvoker endpointInvoker)

Method Detail

process

public InvocationResult process(RouteContext routeContext)
                         throws Exception

Description copied from interface: RouteProcessor

Handles the actual invocation of the target or the passed-in Route.

Specified by:

process in interface RouteProcessor

Parameters:

routeContext - the RouteContext for the current request.

Throws:

Exception - if processing of the route causes an exception.

invokeErrorMethod

private Object invokeErrorMethod(RouteContext errorContext,
                                 Throwable rootCause)
                          throws Exception

Throws:

Exception

getMethodArguments

private Object[] getMethodArguments(RouteContext routeContext,
                                    Throwable t)

errorContext

private RouteContext errorContext(Throwable rootCause,
                                  RouteContext orgContext)

wrapRequest

private javax.servlet.http.HttpServletRequest wrapRequest(RouteContext routeContext)

appendAnyMediaTypeToAcceptHeader

private String appendAnyMediaTypeToAcceptHeader(javax.servlet.http.HttpServletRequest request)