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 in the ProcessingContext using the DeadLetter.RESOURCE_KEY. Hence, the DeadLetter processor is required to add it to the context before invoking the message handlers. If no DeadLetter is present in the context, the resolver will return null.

The parameter resolver matches for any type of Message.

Since:

4.7.0

Author:

Steven van Beelen, Mateusz Nowak

Constructor Summary

Constructors

Constructor	Description
DeadLetterParameterResolverFactory()

Method Summary

Modifier and Type	Method	Description
@Nullable 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 @Nullable 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.