Package org.apache.tapestry5.internal.services

Class MethodInvocationFailResult

org.apache.tapestry5.internal.services.MethodInvocationFailResult

All Implemented Interfaces:

MethodInvocationResult

public class MethodInvocationFailResult
extends 
implements MethodInvocationResult

Implementation of MethodInvocationResult for failed invocations (where a checked exception was thrown).

Since:

5.2.0

Constructor Summary

Constructors

Constructor	Description
thrown)

Method Summary

Modifier and Type	Method	Description
	getReturnValue()	The return value from the method invocation.
<T extends > T	<T> throwableClass)	If MethodInvocationResult.isFail() is true, this method provides access to the actual checked exception that was thrown.
boolean	isFail()	If true, then the method invocation ended with a checked exception being thrown.
void	rethrow()	If the invocation threw a checked exception, this method will wrap that exception in a RuntimeException and throw that.

Methods inherited from class java.lang.

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Constructor Detail

MethodInvocationFailResult

public  thrown)

Method Detail

getReturnValue

public  getReturnValue()

Description copied from interface: MethodInvocationResult

The return value from the method invocation. This will be null if the method returns null, is a void method, or if a checked exception was thrown by the method.

Specified by:

getReturnValue in interface MethodInvocationResult

getThrown

public <T extends > T <T> throwableClass)

Description copied from interface: MethodInvocationResult

If MethodInvocationResult.isFail() is true, this method provides access to the actual checked exception that was thrown.

Specified by:

getThrown in interface MethodInvocationResult

Parameters:

throwableClass - the type of exception to match

Returns:

the exception, if the method invocation threw a checked exception, and the exception is assignable to the provided type. In other cases, null is returned.

isFail

public boolean isFail()

Description copied from interface: MethodInvocationResult

If true, then the method invocation ended with a checked exception being thrown.

Specified by:

isFail in interface MethodInvocationResult

rethrow

public void rethrow()

Description copied from interface: MethodInvocationResult

If the invocation threw a checked exception, this method will wrap that exception in a RuntimeException and throw that. For most code that doesn't specifically care about the thrown exception, this method should be invoked before continuing on to examine MethodInvocationResult.getReturnValue().

Specified by:

rethrow in interface MethodInvocationResult