Package org.axonframework.messaging.deadletter

Class DeadLetterParameterResolverFactory

java.lang.Object

org.axonframework.messaging.deadletter.DeadLetterParameterResolverFactory

All Implemented Interfaces:

ParameterResolverFactory

public class DeadLetterParameterResolverFactory
extends Object
implements ParameterResolverFactory

A ParameterResolverFactory constructing a ParameterResolver resolving the DeadLetter that is being processed.

Expects the DeadLetter to reside under the UnitOfWork.resources() using the class name of the DeadLetter as the key. Hence, the DeadLetter processor is required to add it to the resources before invoking the message handlers. If no UnitOfWork is active or there is no DeadLetter is present, the resolver will return null.

The parameter resolver matches for any type of Message.

Since:

4.7.0

Author:

Steven van Beelen

Constructor Summary

Constructors

Constructor	Description
DeadLetterParameterResolverFactory()

Method Summary

Modifier and Type	Method	Description
ParameterResolver<DeadLetter<?>>	createInstance(Executable executable, Parameter[] parameters, int parameterIndex)	If available, creates a ParameterResolver instance that can provide a parameter of type parameterType for a given message.

Methods inherited from class java.lang.Object

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

Constructor Details

DeadLetterParameterResolverFactory

public DeadLetterParameterResolverFactory()

Method Details

createInstance

public ParameterResolver<DeadLetter<?>> createInstance(Executable executable,
 Parameter[] parameters,
 int parameterIndex)

Description copied from interface: ParameterResolverFactory

If available, creates a ParameterResolver instance that can provide a parameter of type parameterType for a given message.

If the ParameterResolverFactory cannot provide a suitable ParameterResolver, returns null.

Specified by:

createInstance in interface ParameterResolverFactory

Parameters:

executable - The executable (constructor or method) to inspect

parameters - The parameters on the executable to inspect

parameterIndex - The index of the parameter to return a ParameterResolver for

Returns:

a suitable ParameterResolver, or null if none is found